QUALITY SEMICONDUCTOR, INC. High-Performance CMOS Analog Four-Cha

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QUALITY SEMICONDUCTOR, INC. High-Performance CMOS Analog Four-Cha

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QS4A101Q PRELIMINARY
QUALITY SEMICONDUCTOR, INC.
High-Performance CMOS Analog Four-Channel SPST Switch With Individual Enables
GENERAL DESCRIPTION
QS4A101
On-resistance: rDS(on) Wide bandwidth: 1.4GHz (-3dB point) Crosstalk: -122dB 50KHz, -80dB 5MHz, -65dB 30MHz Off-isolation: -100dB 50KHz, -75dB 5MHz, -45dB 30MHz, Single supply Bidirectional signal flow compatible control inputs Ultra-low quiescent current: Switch turn time 6.5ns
QS4A101Q high-performance CMOS analog Four-Channel SPST switch with individual enables. This device provides four high-speed CMOS switches connecting inputs outputs. onresistance QS4A101Q allows inputs connected outputs with insertion loss high bandwidth. QS4A101Q with 1.4GHz bandwidth makes ideal high-performance video signal switching, audio signal switching, telecomm routing applications. power dissipation makes this device ideal battery operated remote instrumentation applications. QS4A101Q offered QSOP package which several advantages over conventional packages such PDIP SOIC including: Reduced signal delays denser component packaging circuit boards Reduced system noise less inductance
APPLICATIONS
High-speed video signal switching/routing Audio signal switching/routing Data acquisition systems Telecomm routing Token Ring transceivers High-speed networking
Figure Functional Block Diagram
MDSA-00001-01 1998
CONTROL LOGIC
QUALITY SEMICONDUCTOR, INC.
QS4A101Q PRELIMINARY Figure Configuration
(All Pins View) Name QSOP A1-A4 Description Port Port Port Switch Enable
Table Definitions
B1-B4 E1-E4
Table Function Table
Function Connect Connect Disconnect
Table Absolute Maximum Ratings
Supply Voltage Ground -0.5V +7.0V Switch Voltage -0.5V +7.0V Analog Input Voltage -0.5V +7.0V Input Voltage -0.5V +7.0V Input Voltage (for pulse width 20ns) -3.0V Output Current Max. Sink Current/Pin 120mA Maximum Power Dissipation watts TSTG Storage Temperature -65° +150°C
Note: ABSOLUTE MAXIMUM RATINGS those conditions beyond which damage device occur. Exposure these conditions beyond those indicated adversely affect device reliability. Functional operation under absolute maximum rating conditions implied.
Table Power Supply Characteristics
Symbol Parameter Supply Current Test Conditions Max., Unit
QUALITY SEMICONDUCTOR, INC.
MDSA-00001-01 1998
QS4A101Q PRELIMINARY Table Electrical Characteristics Over Operating Range
Commercial: 70°C, 5.0V Symbol rDS(on) Parameter Analog Signal Range(2) Drain-source On-resistance(2,3) Min., 0.0V, 30mA Min., 1.5V, 15mA rDS(on) rDS(on) Matching Between Channels(2,3,4) Min., 0.0V, 30mA Min., 1.5V, 15mA (OFF) (ON) Channel Leakage Current Channel Leakage Current Input HIGH Voltage Input Voltage VCC, Each Channel Turned Sequentially Guaranteed Logic HIGH Control Pins Guaranteed Logic Control Pins 100pF (See Figure 100pF (See Figure 100pF 1Vp-p, 1Vp-p, 5.5MHz 1Vp-p, 30MHz VCC, VOUT VOUT Test Conditions -0.5 Typ(1) VCC-1 Unit
Analog Switch
Digital Control
Dynamic Characteristics
tON(E) tOFF(E) Enable Turn-on Time Enable Turn-off Time Group Delay(2,5) Off-isolation XTALK C(OFF) C(ON) Crosstalk Switch Capacitance Switch Capacitance Charge Injection -3dB Bandwidth
f3dB
Notes: Typical values indicate 5.0V 25°C. Guaranteed design, subject production test. Measured voltage drop between pins indicated current through switch. On-resistance determined lower voltages (A,B) pins. rDS(on) compares On-resistance specified Values. switch contributes group delay other than delay on-resistance switch load capacitance. Group delay switch, when used system, determined driving circuit driving side switch interaction with load driven side.
MDSA-00001-01 1998
QUALITY SEMICONDUCTOR, INC.
QS4A101Q PRELIMINARY TYPICAL CHARACTERISTICS Figure Off-Isolation Crosstalk Frequency
-180 -150 -120 (dB) Off-isolation Crosstalk
Figure Off-Isolation Crosstalk Frequency
(dB)
Crosstalk 100M 200M 300M 400M 500M 600M 700M Frequency (Hz) Off-isolation
100K
100M Frequency (Hz)
Note: Crosstalk VO/VS Off-isolation VO/VS
Note: Crosstalk VO/VS Off-isolation VO/VS
Figure Off-Isolation Crosstalk Frequency
-160 -140 -120
(dB)
Off-isolation
Figure Off-Isolation Crosstalk Frequency
Crosstalk
-100
(dB)
Frequency (Hz)
100K 100M
Frequency (Hz)
Note: Crosstalk VO/VS Off-isolation VO/VS
Note: Insertion Loss VO/VS
QUALITY SEMICONDUCTOR, INC.
MDSA-00001-01 1998
QS4A101Q PRELIMINARY TYPICAL CHARACTERISTICS (continued) Figure Insertion Loss Frequency
Figure On-resistance
rDS(On) Drain Source On-resistance()
4.75V
(dB)
100M 200M 300M 400M 500M 600M 700M Frequency (Hz)
Note: Insertion Loss VO/VS
(Volts)
TEST CIRCUITS Figure Switching Time
A1-A3 B1-B3
CONTROL INPUT
E1-E3
3.0V 1.5V
0.3V OUTPUT
tOFF(E)
QS4A101CONTROL INPUT
3.0V 1.5V ON(E)
OUTPUT
0.3V
MDSA-00001-01 1998
QUALITY SEMICONDUCTOR, INC.
QS4A101Q PRELIMINARY TEST CIRCUITS (continued) Figure Insertion Loss Figure Crosstalk
QS4A101
Note: Insertion Loss VO/VS unused pins grounded.
Note: Crosstalk VO/VS unused pins grounded.
Figure Off-Isolation
QS4A101B2
Note: Off-isolation VO/VS
QUALITY SEMICONDUCTOR, INC.
MDSA-00001-01 1998

QUALITY SEMICONDUCTOR, INC. High-Performance CMOS Analog Four-Cha

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