OPA350 OPA2350 OPA4350 SBOS099A JULY 2001 High-Speed, Single

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OPA350 OPA2350 OPA4350 SBOS099A JULY 2001 High-Speed, Single

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OPA350 OPA2350 OPA4350
SBOS099A JULY 2001
High-Speed, Single-Supply, Rail-to-Rail OPERATIONAL AMPLIFIERS MicroAmplifier Series
FEATURES
RAIL-TO-RAIL INPUT RAIL-TO-RAIL OUTPUT (within 10mV) WIDE BANDWIDTH: 38MHz HIGH SLEW RATE: 22V/µs NOISE: 5nV/Hz THD+NOISE: 0.0006% UNITY-GAIN STABLE MicroSIZE PACKAGES SINGLE, DUAL, QUAD
APPLICATIONS
CELL PHONE CONTROL LOOPS DRIVING CONVERTERS VIDEO PROCESSING DATA ACQUISITION PROCESS CONTROL AUDIO PROCESSING COMMUNICATIONS ACTIVE FILTERS TEST EQUIPMENT
DESCRIPTION
OPA350 series rail-to-rail CMOS operational amplifiers optimized voltage, single-supply operation. Rail-torail input/output, noise (5nV/Hz), high speed operation (38MHz, 22V/µs) make them ideal driving sampling Analog-to-Digital (A/D) converters. They also well suited cell phone control loops video processing drive capability) well audio general purpose applications. Single, dual, quad versions have identical specifications maximum design flexibility. OPA350 series operates single supply 2.5V with input common-mode voltage range that extends
OPA350
OPA4350
Output
300mV below ground 300mV above positive supply. Output voltage swing within 10mV supply rails with load. Dual quad designs feature completely independent circuitry lowest crosstalk freedom from interaction. single (OPA350) dual (OPA2350) come miniature MSOP-8 surface mount, SO-8 surface mount, DIP-8 packages. quad (OPA4350) packages space-saving SSOP-16 surface mount SO-14 surface mount. specified from -40°C +85°C operate from -55°C +150°C.
SPICE Model available www.ti.com
OPA4350
SO-14
SSOP-16
OPA2350
DIP-8, SO-8, MSOP-8
DIP-8, SO-8, MSOP-8
Please aware that important notice concerning availability, standard warranty, critical applications Texas Instruments semiconductor products disclaimers thereto appears this data sheet.
PRODUCTION DATA information current publication date. Products conform specifications terms Texas Instruments standard warranty. Production processing does necessarily include testing parameters.
Copyright 1999, Texas Instruments Incorporated
www.ti.com
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage 5.5V Signal Input Terminals, Voltage(2) (V-) 0.3V (V+) 0.3V Current(2) 10mA Output Short Circuit(3) Continuous Operating Temperature -55°C +150°C Storage Temperature -55°C +150°C Junction Temperature 150°C Lead Temperature (soldering, 10s) 300°C NOTES: Stresses above these ratings cause permanent damage. Exposure absolute maximum conditions extended periods degrade device reliability. Input terminals diode-clamped power supply rails. Input signals that swing more than 0.3V beyond supply rails should current-limited 10mA less. Short circuit ground, amplifier package.
ELECTROSTATIC DISCHARGE SENSITIVITY
This integrated circuit damaged ESD. Texas Instruments recommends that integrated circuits handled with appropriate precautions. Failure observe proper handling installation procedures cause damage. damage range from subtle performance degradation complete device failure. Precision integrated circuits more susceptible damage because very small parametric changes could cause device meet published specifications.
PACKAGE/ORDERING INFORMATION
PACKAGE DRAWING NUMBER PACKAGE DESIGNATOR SPECIFIED TEMPERATURE RANGE PACKAGE MARKING ORDERING NUMBER(1) TRANSPORT MEDIA
PRODUCT Single OPA350EA
PACKAGE
MSOP-8
-40°C +85°C
OPA350UA
SO-8
-40°C +85°C
OPA350UA
OPA350PA Dual OPA2350EA
DIP-8
-40°C +85°C
OPA350PA
OPA350EA/250 OPA350EA/2K5 OPA350UA OPA350UA/2K5 OPA350PA
Tape Reel Tape Reel Rails Tape Reel Rails
MSOP-8
-40°C +85°C
OPA2350UA
SO-8
-40°C +85°C
OPA2350UA
OPA2350PA Quad OPA4350EA
DIP-8
-40°C +85°C
OPA2350PA
OPA2350EA/250 OPA2350EA/2K5 OPA2350UA OPA2350UA/2K5 OPA2350PA
Tape Reel Tape Reel Rails Tape Reel Rails
SSOP-16
-40°C +85°C
OPA4350EA
OPA4350UA
SO-14
-40°C +85°C
OPA4350UA
OPA4350EA/250 OPA4350EA/2K5 OPA4350UA OPA4350UA/2K5
Tape Reel Tape Reel Rails Tape Reel
NOTES: Models with slash available only Tape Reel quantities indicated (e.g., /2K5 indicates 2500 devices reel). Ordering 2500 pieces "OPA2350EA/2K5" will single 2500-piece Tape Reel.
OPA350, 2350, 4350
SBOS099A
ELECTRICAL CHARACTERISTICS: 2.7V 5.5V
Boldface limits apply over specified temperature range, -40°C +85°C.
+25°C, connected VOUT unless otherwise noted. OPA350EA, OPA2350EA, OPA4350EA, PARAMETER OFFSET VOLTAGE Input Offset Voltage -40°C +85°C Temperature Power-Supply Rejection Ratio -40°C +85°C Channel Separation (dual, quad) INPUT BIAS CURRENT Input Bias Current Temperature Input Offset Current NOISE Input Voltage Noise, 100Hz 400kHz Input Voltage Noise Density, 10kHz 100kHz Current Noise Density, 10kHz INPUT VOLTAGE RANGE Common-Mode Voltage Range Common-Mode Rejection Ratio -40°C +85°C INPUT IMPEDANCE Differential Common-Mode OPEN-LOOP GAIN Open-Loop Voltage Gain -40°C +85°C -40°C +85°C FREQUENCY RESPONSE Gain-Bandwidth Product Slew Rate Settling Time, 0.1% 0.01% Overload Recovery Time Total Harmonic Distortion Noise Differential Gain Error Differential Phase Error OUTPUT Voltage Output Swing from Rail(4) -40°C +85°C -40°C +85°C Output Current Short-Circuit Current Capacitive Load Drive POWER SUPPLY Operating Voltage Range Minimum Operating Voltage Quiescent Current (per amplifier) -40°C +85°C TEMPERATURE RANGE Specified Range Operating Range Storage Range Thermal Resistance MSOP-8 Surface Mount SO-8 Surface Mount DIP-8 SO-14 Surface Mount SSOP-16 Surface Mount 10k, 50mV (V+) -50mV 10k, 50mV (V+) -50mV 200mV (V+) -200mV 200mV (V+) -200mV 100pF Step Step 600, 2.5Vp-p(2), 1kHz 600, 1.4V(3) 600, 1.4V(3) 10k, 100dB 10k, 100dB 100dB 100dB CONDITION -40°C +85°C 2.7V 5.5V, 2.7V 5.5V, TYP(1) ±150 ±500 UNITS µV/°C µV/V µV/V µV/V µVrms nV/Hz nV/Hz fA/Hz (V+)+0.1 V/µs
0.15
PSRR
±0.5 Typical Characteristics ±0.5 -40°C 2.7V, -0.1V 5.5V, -0.1V 5.5V, -0.1V +85°C 2.8V 5.6V 5.6V -0.1
CMRR
1013 1013
THD+N
0.22 0.0006 0.17 0.17
VOUT
IOUT CLOAD -40°C +85°C
±40(5) Typical Characteristics +150 +150
°C/W °C/W °C/W °C/W °C/W
NOTES: +5V. VOUT 0.25V 2.75V. NTSC signal generator used. Figure test circuit. Output voltage swings measured between output power supply rails. typical characteristic, "Output Voltage Swing Output Current."
OPA350, 2350, 4350
SBOS099A
TYPICAL CHARACTERISTICS
+25°C, +5V, connected VS/2, unless otherwise noted.
OPEN-LOOP GAIN/PHASE FREQUENCY
Voltage Gain (dB)
POWER SUPPLY COMMON-MODE REJECTION RATIO FREQUENCY PSRR, CMRR (dB) CMRR -0.1V 5.1V) PSRR
-135
Phase
-180 100k 100M Frequency (Hz) 100k Frequency (Hz)
INPUT VOLTAGE CURRENT NOISE SPECTRAL DENSITY FREQUENCY 100k
CHANNEL SEPARATION FREQUENCY
Channel Separation (dB)
Voltage Noise (nVHz)
Current Noise
Current Noise (fAHz)
Dual quad devices. 100k
Voltage Noise
100k Frequency (Hz)
Frequency (Hz)
TOTAL HARMONIC DISTORTION NOISE FREQUENCY Harmonic Distortion
THD+N
HARMONIC DISTORTION NOISE FREQUENCY (-40dBc) (-60dBc) 0.01 (-80dBc) 0.001 (-100dBc) 0.0001 (-120dBc) 2.5Vp-p
100, 3Vp-p
0.01
3Vp-p 3Vp-p Input goes through transition region 2.5Vp-p 0.25V 2.75V) Input does through transition region
0.001
Harmonic Harmonic
0.0001 Frequency (Hz) 100k
100k Frequency (Hz)
OPA350, 2350, 4350
SBOS099A
TYPICAL CHARACTERISTICS (Cont.)
+25°C, +5V, connected VS/2, unless otherwise noted.
DIFFERENTIAL GAIN/PHASE RESISTIVE LOAD Phase 1.4V NTSC Signal Generator Figure test circuit.
OPEN-LOOP GAIN TEMPERATURE
Differential Gain Differential Phase
Open-Loop Gain (dB)
Gain
1000 Resistive Load
Temperature (°C)
COMMON-MODE POWER-SUPPLY REJECTION RATIO TEMPERATURE CMRR, 5.5V (VCM -0.1V +5.6V)
CMRR (dB)
SLEW RATE TEMPERATURE
Slew Rate (V/µs)
PSRR (dB)
Negative Slew Rate Positive Slew Rate
PSRR
CMRR, 2.7V (VCM -0.1V +2.8V)
Temperature (°C)
Temperature (°C)
QUIESCENT CURRENT SHORT-CIRCUIT CURRENT TEMPERATURE +ISC
Quiescent Current (mA)
QUIESCENT CURRENT SUPPLY VOLTAGE
Short-Circuit Current (mA)
Amplifier
Quiescent Current (mA)
-ISC
Supply Voltage
Temperature (°C)
OPA350, 2350, 4350
SBOS099A
TYPICAL CHARACTERISTICS (Cont.)
+25°C, +5V, connected VS/2, unless otherwise noted.
INPUT BIAS CURRENT TEMPERATURE
INPUT BIAS CURRENT INPUT COMMON-MODE VOLTAGE
Input Bias Current (pA)
Input Bias Current (pA)
Temperature (°C)
-0.5 -0.5 Common-Mode Voltage
MAXIMUM OUTPUT VOLTAGE FREQUENCY Output Voltage (Vp-p) 100k 2.7V 5.5V Maximum output voltage without slew rate-induced distortion.
Frequency (Hz)
100M
OUTPUT VOLTAGE SWING OUTPUT CURRENT (V+)-1
Output Voltage
OPEN-LOOP GAIN OUTPUT VOLTAGE SWING IOUT 250µA IOUT 2.5mA
+125°C (V+)-2
Open-Loop Gain (dB)
-55°C
+25°C
IOUT 4.2mA
(V-)+2
Depending circuit configuration (including closed-loop gain) performance degraded shaded region. +125°C +25°C -55°C
(V-)+1
(V-)
Output Current (mA) Output Voltage Swing from Rails (mV)
OPA350, 2350, 4350
SBOS099A
TYPICAL CHARACTERISTICS (Cont.)
+25°C, +5V, connected VS/2, unless otherwise noted.
OFFSET VOLTAGE PRODUCTION DISTRIBUTION
OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION Percent Amplifiers Typical production distribution packaged units.
Typical distribution packaged units.
Percent Amplifiers
-500 -450 -400 -350 -300 -250 -200 -150 -100
Offset Voltage Drift (µV/°C)
Offset Voltage (µV)
SMALL-SIGNAL OVERSHOOT LOAD CAPACITANCE 100k Load Capacitance (pF)
Settling Time (µs)
SETTLING TIME CLOSED-LOOP GAIN
0.01%
Overshoot
0.1% Closed-Loop Gain (V/V) -100
SMALL-SIGNAL STEP RESPONSE 100pF
LARGE-SIGNAL STEP RESPONSE 100pF
50mV/div
1V/div
100ns/div
200ns/div
OPA350, 2350, 4350
SBOS099A
APPLICATIONS INFORMATION
OPA350 series amps fabricated state-of-the-art micron CMOS process. They unity-gain stable suitable wide range general-purpose applications. Rail-torail input/output make them ideal driving sampling converters. They also well suited controlling output power cell phones. These applications often require high speed noise. addition, OPA350 series offers cost solution general-purpose consumer video applications drive capability). Excellent performance makes OPA350 series well suited audio applications. Their bandwidth, slew rate, noise (5nV/Hz), (0.0006%), small package options ideal these applications. class output stage capable driving loads connected point between ground. Rail-to-rail input output swing significantly increases dynamic range, especially voltage supply applications. Figure shows input output waveforms
OPA350 unity-gain configuration. Operation from single supply with load connected input 5Vp-p sinusoid. Output voltage swing approximately 4.95Vp-p. Power supply pins should bypassed with 0.01µF ceramic capacitors. OPERATING VOLTAGE OPA350 series amps fully specified from +2.7V +5.5V. However, supply voltage range from +2.5V +5.5V. Parameters tested over specified supply range-a unique feature OPA350 series. addition, many specifications apply from -40°C +85°C. Most behavior remains virtually unchanged throughout full operating voltage range. Parameters that vary significantly with operating voltage temperature shown typical characteristics. RAIL-TO-RAIL INPUT tested input common-mode voltage range OPA350 series extends 100mV beyond supply rails. This achieved with complementary input stage-an N-channel input differential pair parallel with P-channel differential pair, shown Figure N-channel pair active input voltages close positive rail, typically (V+) 1.8V 100mV above positive supply, while P-channel pair inputs from 100mV below negative supply approximately (V+) 1.8V. There small transition region, typically (V+) (V+) 1.6V, which both pairs This 400mV transition region vary ±400mV with process variation. Thus, transition region (both input stages range from (V+) 2.4V (V+) 2.0V end, (V+) 1.6V (V+) 1.2V high end.
VOUT
FIGURE Rail-to-Rail Input Output.
Reference Current
VIN+
1.25V/div
VIN-
VBIAS1
Class Control Circuitry
VBIAS2
(Ground)
FIGURE Simplified Schematic.
OPA350, 2350, 4350
SBOS099A
OPA350 series amps laser-trimmed reduce offset voltage difference between N-channel P-channel input stages, resulting improved commonmode rejection smooth transition between N-channel pair P-channel pair. However, within 400mV transition region PSRR, CMRR, offset voltage, offset drift, degraded compared operation outside this region. double-folded cascode adds signal from input pairs presents differential signal class output stage. Normally, input bias current approximately 500fA. However, large inputs (greater than 300mV beyond supply rails) turn OPA350's input protection diodes, causing excessive current flow input pins. Momentary voltages greater than 300mV beyond power supply tolerated current input pins limited 10mA. This easily accomplished with input resistor, shown Figure Many input signals inherently current-limited less than 10mA, therefore, limiting resistor required.
characteristic "Small-Signal Overshoot Capacitive Load" shows performance with resistive load. Increasing load resistance improves capacitive load drive capability. FEEDBACK CAPACITOR IMPROVES RESPONSE optimum settling time stability with high-impedance feedback networks, necessary feedback capacitor across feedback resistor, shown Figure This capacitor compensates zero created feedback network impedance OPA350's input capacitance (and parasitic layout capacitance). effect becomes more significant with higher impedance networks.
IOVERLOAD 10mA
OPA350
VOUT
OPAx350
VOUT
Where equal OPA350's input capacitance (approximately 9pF) plus parastic layout capacitance.
FIGURE Input Current Protection Voltages Exceeding Supply Voltage. RAIL-TO-RAIL OUTPUT class output stage with common-source transistors used achieve rail-to-rail output. light resistive loads (>10k), output voltage swing typically millivolts from supply rails. With heavier resistive loads (600 10k), output swing within tens millivolts from supply rails maintain high open-loop gain. typical characteristics "Output Voltage Swing Output Current" "Open-Loop Gain Output Voltage." CAPACITIVE LOAD STABILITY OPA350 series amps drive wide range capacitive loads. However, amps under certain conditions become unstable. configuration, gain, load value just factors consider when determining stability. unity-gain configuration most susceptible effects capacitive load. capacitive load reacts with amp's output impedance, along with additional load resistance, create pole small-signal response that degrades phase margin. unity gain, OPA350 series amps perform well with very large capacitive loads. Increasing gain enhances amplifier's ability drive more capacitance. typical
FIGURE Feedback Capacitor Improves Dynamic Performance. suggested that variable capacitor used feedback capacitor since input capacitance vary between amps layout capacitance difficult determine. circuit shown Figure value variable feedback capacitor should chosen that input resistance times input capacitance OPA350 (typically 9pF) plus estimated parasitic layout capacitance equals feedback capacitor times feedback resistor: where equal OPA350's input capacitance (sum differential common-mode) plus layout capacitance. capacitor varied until optimum performance obtained. DRIVING CONVERTERS OPA350 series amps optimized driving medium speed 500kHz) sampling converters. However, they also offer excellent performance higher speed converters. OPA350 series provides effective means buffering A/D's input capacitance resulting charge injection while providing signal gain.
OPA350, 2350, 4350
SBOS099A
Figure shows OPA350 driving ADS7861. ADS7861 dual, 500kHz, 12-bit sampling converter tiny SSOP-24 package. When used with miniature package options OPA350 series, combination ideal space-limited applications. further information, consult ADS7861 data sheet (SBAS110A). OUTPUT IMPEDANCE frequency open-loop output impedance OPA350's common-source output stage approximately When connected with feedback, this value reduced significantly loop gain amp. example, with 122dB open-loop gain, output impedance reduced unity-gain less than 0.001. each decade rise closed-loop gain, loop gain reduced same amount which results ten-fold increase effective output impedance (see typical characteristic, "Output Impedance Frequency"). higher frequencies, output impedance will rise open-loop gain drops. However, these frequencies output also becomes capacitive parasitic capacitance. This prevents output impedance from becoming high, which cause stability probCB1
lems when driving capacitive loads. mentioned previously, OPA350 excellent capacitive load drive capability with bandwidth. VIDEO LINE DRIVER Figure shows circuit single supply, composite video line driver. synchronized outputs composite video line driver extend below ground. shown, input should ac-coupled shifted positively provide adequate signal swing account these negative signals single-supply configuration. input terminated with resistor ac-coupled with 47µF capacitor voltage divider that provides bias point input. Figure this point approximately (V-) 1.7V. Setting optimal bias point requires some understanding nature composite video signals. best performance, should careful avoid distortion caused transition region OPA350's complementary input stage. Refer discussion rail-to-rail input.
OPA4350
0.1µF 0.1µF
OPA4350 OPA4350 REFIN REFOUT DGND AGND ADS7861 SERIAL DATA SERIAL DATA BUSY CLOCK CONVST Serial Interface
OPA4350
2.45V 4.9V output. Choose CB1, CB0, CA1, filter high frequency noise.
FIGURE OPA4350 Driving Sampling Converter.
OPA350, 2350, 4350
SBOS099A
220µF
0.1µF 0.1µF 10µF
1000µF ROUT Cable VOUT
47µF Video
OPA350
(pin
10µF
FIGURE Single-Supply Video Line Driver.
(2.5V)
REF1004-2.5 100k
OPA2350
100k
OPA2350
G=5+
200k
FIGURE Op-Amp Instrumentation Amplifier With Improved High Frequency Common-Mode Rejection.
4.7nF
10.5k
+2.5V
+2.5V
2.74k
19.6k
OPA350 -2.5V
VOUT
1830pF
270pF
OPA350
VOUT
49.9k
-2.5V
FIGURE 10kHz Low-Pass Filter.
FIGURE 10kHz High-Pass Filter.
OPA350, 2350, 4350
SBOS099A
IMPORTANT NOTICE Texas Instruments subsidiaries (TI) reserve right make changes their products discontinue product service without notice, advise customers obtain latest version relevant information verify, before placing orders, that information being relied current complete. products sold subject terms conditions sale supplied time order acknowledgment, including those pertaining warranty, patent infringement, limitation liability. warrants performance products specifications applicable time sale accordance with TI's standard warranty. Testing other quality control techniques utilized extent deems necessary support this warranty. Specific testing parameters each device necessarily performed, except those mandated government requirements. Customers responsible their applications using components. order minimize risks associated with customer's applications, adequate design operating safeguards must provided customer minimize inherent procedural hazards. assumes liability applications assistance customer product design. does warrant represent that license, either express implied, granted under patent right, copyright, mask work right, other intellectual property right covering relating combination, machine, process which such products services might used. TI's publication information regarding third party's products services does constitute TI's approval, license, warranty endorsement thereof. Reproduction information data books data sheets permissible only reproduction without alteration accompanied associated warranties, conditions, limitations notices. Representation reproduction this information with alteration voids warranties provided associated product service, unfair deceptive business practice, responsible liable such use. Resale TI's products services with statements different from beyond parameters stated that product service voids express implied warranties associated product service, unfair deceptive business practice, responsible liable such use. Also see: Standard Terms Conditions Sale Semiconductor Products. www.ti.com/sc/docs/stdterms.htm
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Copyright 2001, Texas Instruments Incorporated

OPA350 OPA2350 OPA4350 SBOS099A JULY 2001 High-Speed, Single

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