EVR3 Electric Variable Resistance Outline YAC526 (EVR3)

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EVR3 Electric Variable Resistance Outline YAC526 (EVR3)

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YAC526
EVR3
Electric Variable Resistance
Outline
YAC526 (EVR3) high grade digital volume high-end audio systems. Owing built-in high-quality sound operational amplifier, output with wide dynamic range distortion factor obtained. YAC526 able control each channel through serial data interface steps 0.5dB step, daisy chain connection constitute multichannel system. Owing zero-cross detection function, device able suppress audible noise that occur quick volume change.
Features
Built-in 2channel high sound quality operational amplifier. Wide volume range. 31.5dB-95.0dB, MUTE (0.5dB/step, steps) Maximum input signal amplitude 4.2Vrms (±6V power supply) distortion (THD) 0.0002 typ. (Input=1Vrms@1kHz, Gain=0dB residual noise 1.2Vrms typ. (Gain=MUTE, IHF-A) Power supply voltage ±4.75V±6.6V Silicon gate CMOS process. 24-pin plastic SSOP. plating pins lead-free.(YAC526-EZ)
YAC526 CATALOG CATALOG No.:LSI-4AC526A2 2003.10
YAC526
Terminal configration
ZCEN1 ZCEN2 SDATAI DGND DVSS SCLK SDATAO REF1A REF1B OUT1 AVDD AVSS AVSS AVDD OUT2 REF2B REF2A
SSOP View Terminal function
Name ZCEN1 Function Zero-cross control input Select from four types zero-cross modes including non-zerocross mode. When changing zero-cross modes during operation, system that changes second more after rise signal. ZCEN2 Zero-cross control input Select from four types zero-cross modes including non-zerocross mode. When changing zero-cross modes during operation, system that changes second more after rise signal. Chip select input SDATAI Serial data input DGND Digital ground Reference voltage output digital attaining stabilization, connect this terminal DVSS terminal through capacitance 10µF higher (CREF). please this terminal output drive purpose external circuit. DVSS Minus power supply digital (-6.0V Typ.) SCLK Serial clock input SDATAO Serial data output Serial data outputted from this terminal when level. This terminal becomes high-impedance state when "H". Since open drain output pin, pull through resistor power supply voltage AVDD less) device connected. allow output current 1.5mA over. Test terminal (Pull-down) connection connect DGND terminal. Test terminal (Pull-down) connection connect DGND terminal. Test terminal (Pull-down) connection connect DGND terminal. analog input output impedance input signal source used less than 10k. When avoid this terminal, connect ground. REF2A analog reference voltage input Connect ground directly. REF2B analog reference voltage input Connect ground directly. OUT2 analog output AVDD Plus power supply analog (+6.0V Typ.) AVSS Minus power supply analog (-6.0V Typ.) AVSS Minus power supply analog (-6.0V Typ.) AVDD Plus power supply analog (+6.0V Typ.) OUT1 analog output REF1B analog reference voltage input Connect ground directly. REF1A analog reference voltage input Connect ground directly. analog input output impedance input signal source used less than 10k. When avoid this terminal, connect ground. Note analog terminal, Open drain output terminal, level means VIL, level means VIH.
YAC526
Block diagram
0-95dB 0+31.5dB OPAmp
OUT1
REF1B REF1A
AVDD DGND AVSS DVSS
Zero Crossing Detector
Control Register
Zero Crossing Detector
Register
ZCEN1 ZCEN2 SDATAO(OpenDrain) SDATAI SCLK
REF2A REF2B
0+31.5dB 0-95dB OPAmp
OUT2
YAC526
Description functions
Analog functions Maximum input voltage maximum amplitude input signal that inputted analog input YAC526 4.2Vrms when power supply voltage ±6V. system which signal exceeding power supply voltage (AVDD/AVSS) applied, external diodes suppress signal maximum rating less. Maximum output voltage maximum output voltage(THD<1) signal that outputted from analog output YAC526 4.2Vrms when power supply voltage load connected. output impedance (typ.). Realization residual noise system General audio amplifiers designed have input sensitivity approximately 150mV, have gain approximately 16dB preamplifier (PreAMP) section approximately 30dB main amplifier section (MainAMP). residual noise YAC526 (Gain=MUTE) 1.2Vrms (typ.) which very small, device positive side gain (max: 31.5dB). Therefore, using YAC526 also "PreAMP", systems with very small residual noise amplification volume control noise configured. conventional configurations that need "PreAMP", even residual noise volume control itself zero, noise that produced "PreAMP" amplified gain, noise becomes very high when heard speakers. When input converted noise "PreAMP" conventional configuration produces noise approximately 200V speakers. configuration that uses YAC526, noise which very small. Residual noise produced conventional configuration
1Vrms 6.3Vrms 200Vrms
Residual noise produced configuration that adopts YAC526
1.2Vrms
YAC526
38Vrms
+16dB
+30dB Zin=10k +30dB
Volume
PreAMP
MainAMP
-+16dB Volume PreAMP MainAMP
YAC526
Digital functions Serial data interface Writing volume control data into YAC526 performed through serial interface. SDATAI serial data input pin, SCLK clock input pin, chip select writing value volume. 16-bit serial data that inputted from SDATAI (MSB first) taken into YAC526 rising edge SCLK when terminal level. serial data latched rising edge CSN, volume value each channel into register. present volume value outputted from SDATAO serial data. With this data, control using daisy chain connection verification present volume value performed easily. Note that register value after turning power supply ALL"0" (muted state) interface enabled after predetermined period (tPUP) elapsed. (Serial access prohibited tPUP period.) SCLK SDATAI SDATAO
D1[15] D1[14] D1[13] D1[12] D1[11] D1[10] D1[7] D1[6] D1[5] D1[4] D1[3] D1[2] D1[1] D1[0]
D0[15] D0[14] D0[13] D0[12] D0[11] D0[10]
D0[7]
D0[6]
D0[5]
D0[4]
D0[3]
D0[2]
D0[1]
D0[0]
D1[15]
Assignment volume control data
D[15: Channel1 Volume data D1[15:0] volume data value change. Channel2 Volume data D0[15:0] present volume data value.
Daisy chain YAC526 extensible multichannel system with daisy chain connection. example, connecting device with YAC523 (7ch digital volume) through daisy chain, 8.1ch system attained. connecting SDATAO YAC526 YAC523) SDATAI YAC523 YAC526), YAC526 YAC523 controlled simultaneously without need complex addressing. also possible connect multiple YAC526.) volume data taken into (serial parallel) registers each setting clock period channels that connected with daisy chain. And, setting after elapse clock period channels, data written from registers YAC526 YAC523) that connected with daisy chain into control registers simultaneously change volume value. Example: Assignment volume control data when combination YAC526 YAC523 described below used.
Audio source
YAC526 SDATAO SDATAI SCLK
YAC523 SDATAO SDATAI SCLK
D[71:64] [YAC526] Channel1 Volume data D[63:56] [YAC526] Channel2 Volume data D[55:48] [YAC523] Channel1 Volume data D[47:40] [YAC523] Channel2 Volume data D[39:32] [YAC523] Channel3 Volume data D[31:24] [YAC523] Channel4 Volume data D[23:16] [YAC523] Channel5 Volume data D[15: [YAC523] Channel6 Volume data [YAC523] Channel7 Volume data
Controller
SCLK SDATAI
D[71] D[70] D[69] D[68] D[67] D[66] D[7] D[6] D[5] D[4] D[3] D[2] D[1] D[0]
YAC526
Volume setting relationship between input code volume value shown following table. input code, left serves MSB.) Input code
11111111 11111110
Gain attenuate(dB)
MUTE +31.5
11011111
+16.0
10111111
00000010 00000001 00000000
-94.5 -95.0 MUTE
input codes ALL"0" ALL"1" mute. Zero-cross mode YAC526 incorporates zero-cross detection function suppress audible noise when volume changed quickly. mode selected from following four modes setting ZCEN1 pins. ZCEN[2:1] Normal Zero-cross mode Zero-cross mode Zero-cross mode Mode Operation Zero-cross detected, volume value changed immediately after rising CSN. Zero-cross detected after rising CSN, after tTM1 (20ms) passes, volume value changed. Zero-cross detected after rising CSN, after tTM2 (10ms) passes, volume value changed. When next data written within tTM1 (20ms) zero-cross mode changed performed falling using volume value immediately before.
zero-cross
zero-cross
zero-cross
zero-cross
t
SDATAI Volume value (Zero-cross mode Volume value (Zero-cross mode
-12dB -9dB -6dB -15dB(Last value) -3dB
-15dB(Last value)
-12dB
-9dB
-6dB
-3dB
Operation each zero-cross mode when zero-cross detected careful change zero-cross mode during operation device, erroneous operation caused. Perform change zero-cross mode after elapse second more from rising signal. Power reset YAC526 builds power reset function that resets volume value when power turned Since system that perform reset detecting power supply voltage level, when turning power supply again, after power supply voltage AVDD AVSS reduced sufficiently +1.0V/ -1.0V less). Moreover, although volume register reset time power supply injection, since shocking sound occurs case power supply ON/OFF, please apply mute whole set.
YAC526
Electrical characteristics
1.Absolute maximum rating Item Power supply voltage Analog input terminal voltage Digital input terminal voltage Symbol AVDD-AVSS VINA VIND Min. AVSS -0.6 AVSS -0.3 Max. 14.0 AVDD+0.6 VINA-AVSS 14.0V AVDD+0.3 VIND-AVSS 14.0V Unit
Storage temperature TSTG Note Please AVSS DVSS with same potential. DGND=0V Recommended operating conditions Item Symbol Min. Analog power supply voltage(Positive) AVDD 4.75 -6.60 Analog power supply voltage(Negative) AVSS (AVSS=DVSS) DVSS -6.60 Operating ambient temperature Note Please AVSS DVSS with same potential. DGND=0V
Typ. 6.00 -6.00 -6.00
Max. 6.60 -4.75 -4.75
Unit
Analog characteristics (Ta=25, AVDD=+6.0V, AVSS=-6.0V, DVSS=-6.0V) Item Symbol Min. Typ. Gain range Gain -95.0 Step size Gain matching between channel (0-40dB, 1kHz) ±0.1 ±0.2 Gain matching between channel (-80dB, 1kHz) Step error (-80dB) ±0.1 Input resistance Output resistance Load resistance Input capacitance Load capacitance Maximum input voltage (THD<1, RL=) Maximum output voltage (THD<1, RL=) Output noise voltage1 (In=GND, Vol=+16dB) 10.0 Output noise voltage2 (In=GND, Vol=0dB) Output noise voltage3 (In=GND, Vol=Mute) Total harmonic distortion (In=1Vrms, Vol=0dB, 1kHz) THD1 0.0002 Total harmonic distortion (In=1Vrms, Vol=0dB, 20kHz) THD2 0.0025 Inter channel isolation (Vol=0dB, 1kHz) -130 Note Input other channels analog ground, Band Width=IHF-A Input other channels analog ground, Band Width=400Hz30kHz Input other channels analog ground, Band Width=400Hz Power consumption Item Symbol Power consumption(AVDD=+6V, AVSS=-6V, CSN="H") characteristics Item High level input voltage level input voltage level output voltage Input leakage current Min. Typ.
Max. +31.5
Unit Vrms Vrms Vrms Vrms Vrms
Max.
Unit
Symbol
Condition
Min. -0.3
Typ.
1.5mA
Max. AVDD+0.3
Unit
YAC526
characteristicsCL=20pF Item Serial clock frequency Serial clock pulse width high Serial clock pulse width SDATAI time SDATAI hold time pulse width High time hold time SDATAO data output time SDATAO output delay time SDATAO output data hold time (data output stop) CSN, SCLK rise time CSN, SCLK fall time Zero-cross time (Zero-cross MODE=A, Zero-cross time (Zero-cross MODE=B) Regulation time until data writing from power supply injection (more than AVSS=90%) becomes effective. (CREF=10F) Symbol SCLK tSDVS tSDH tCSPH tCSVS tLTH tCSH tSSD tCSDH tTM1 tTM2 tPUP Min. 1000 Typ. Max. Unit
tCSPH
tCSVS SCLK
tLTH tSDVS
tSDH
SDATAI
tCSDH
SDATAO
tSSD
tCSH
Serial port timing
YAC526
Example system configuration
When there fear that voltage exceeding maximum rating applied analog input pins (IN1 IN2) YAC526, connect diodes between AVDD AVSS shown below prevent application voltage exceeding maximum rating input pins. Please make analog domain digital domain into ground side separated, respectively, arrange YAC526 analog domain impedance AVSS should become small much possible. please secure area large enough, radiation noise should fully stopped analog ground digital ground also make Control signals, such serial interface, should wire digital ground side collectively. order prevent interference with control signal analog signal, careful analog signal digital signal cross adjoin.
Analog input terminal protection AVDD
IN1,
AVSS
Since SDATAO open drain output pin, connect power supply destination device connected through resistor. SDATAI YAC523/ YAC526 Digital Controller
YAC526
ZCEN1 ZCEN2 SDATAI DGND DVSS SCLK SDATAO REF1A REF1B OUT1 AVDD AVSS AVSS AVDD OUT2 REF2B REF2A
Digital ground Analog ground
YAC526
Typical analog characteristic long there description especially, Ta=+25, AVDD=+6V, AVSS=-6V, DVSS=-6V, RL=10k,
CL=100pF.
Frequency response
Frequency response
YAC526
Input voltage 1kHz
Input voltage (Vrms)
Input voltage 20kHz
Input voltage (Vrms)
YAC526
Frequency (RL=OPEN, 10k)
YAC526
External dimensions package
8.20±0.30
C-PK24EP-1
7.90±0.40
5.3±0.30
0.30±0.10
P-0.65TYP
0-10
0.20±0.10 0.22±0.10 (LEAD THICKNESS)
(UNIT) (millimeters) figure parenthesis should used reference. Plastic body dimensions include burr resin. UNIT:
!"#$% !"#$%&'()*+,-./01 !"#$%&'()*+,-./012-3
MIN. (STAND OFF)
2.10MAX.
(0.60)
YAC526
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EVR3 Electric Variable Resistance Outline YAC526 (EVR3)

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