EVR2 Electric Variable Resistance Outline YAC523 (EVR2)
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YAC523
EVR2
Electric Variable Resistance
Outline
YAC523 (EVR2) high grade digital volume high-end audio systems. Owing built-in high-quality sound operational amplifier, output with wide dynamic range distortion factor obtained. YAC523 able control each channel through serial data interface steps 0.5dB step, allow configuration system with channels more using daisy chain connection. Owing zero-cross detection function, device able suppress audible noise that occur quick volume change.
Features
Built-in 7channel 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) 0.0004 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. 48-pin plastic LQFP (YAC523-VZ)
YAC523CATALOG CATALOG No.:LSI-4AC523A2 2003.5
YAC523
Terminal configration
YAC523-VZ
OUT1
OUT3
OUT4
OUT5
OUT2
OUT6
OUT7
AVSS ZCEN1 ZCEN2 SDATAI SCLK SDATAO DGND AVSS
REF1B
REF1A REF2B REF2A REF3B REF3A REF4B REF4A REF5A REF5B REF6A REF6B REF7A
AVDD
AVDD
AVSS
AVSS
LQFP TopView>
REF7B
YAC523
Terminal function
Function Minus power supply analog (-6.0V Typ.) Plus power supply analog (+6.0V Typ.) analog input When avoid this terminal, connect ground. analog input please output impedance source input analog input signal less than 2.2k. analog input analog input analog input analog input Plus power supply analog (+6.0V Typ.) Minus power supply analog (-6.0V Typ.) analog reference voltage input Connect ground directly. analog reference voltage input Connect ground through 33F. analog reference voltage input Connect ground directly. analog reference voltage input Connect ground through 33F. analog reference voltage input Connect ground directly. analog reference voltage input Connect ground through 33F. analog reference voltage input Connect ground through 33F. analog reference voltage input Connect ground directly. analog reference voltage input Connect ground through 33F. analog reference voltage input Connect ground directly. analog reference voltage input Connect ground through 33F. analog reference voltage input Connect ground directly. analog reference voltage input Connect ground through 33F. analog reference voltage input Connect ground directly. connection connect ground. connection connect ground. analog output analog output analog output analog output analog output analog output analog output connection connect ground. connection connect ground. Minus power supply analog (-6.0V Typ.) 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. Zero-cross control input Select from four types zero-cross modes including non-zero39 ZCEN2 cross mode. When changing zero-cross modes during operation, system that changes second more after rise signal. Chip select input Serial data input SDATAI Serial clock input SCLK 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 connection connect DGND terminal. Test terminal connection connect DGND terminal. Digital ground DGND Reference voltage output digital attaining stabilization, connect this terminal AVSS terminal through capacitance 10µF higher (CREF). please this terminal output drive purpose external circuit. Minus power supply analog (-6.0V Typ.) AVSS Note analog terminal, Open drain output terminal, level means VIL, level means VIH. Name AVSS AVDD AVDD AVSS REF7B REF7A REF6B REF6A REF5B REF5A REF4A REF4B REF3A REF3B REF2A REF2B REF1A REF1B OUT7 OUT6 OUT5 OUT4 OUT3 OUT2 OUT1 AVSS ZCEN1
YAC523
Internal block diagram
0-95dB 0+31.5dB OPAmp
OUT1
REF1B REF1A
0-95dB 0+31.5dB OPAmp
OUT2
REF2B REF2A
0-95dB 0+31.5dB OPAmp
OUT3
REF3B REF3A
0-95dB 0+31.5dB OPAmp
OUT4
REF4B REF4A
Zero Crossing Detector
CH1,2,3,4 Control
AVDD DGND AVSS
Zero Crossing Detector CH5,6,7 Control
Control Register Register
ZCEN2 ZCEN1 SDATAO(OpenDrain) SDATAI SCLK
REF5A REF5B
OPAmp 0+31.5dB 0-95dB
OUT5
REF6A REF6B
OPAmp 0+31.5dB 0-95dB
OUT6
REF7A REF7B
OPAmp 0+31.5dB 0-95dB
OUT7
YAC523
Description functions
Analog functions Maximum input voltage maximum amplitude input signal that inputted analog input YAC523 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 YAC523 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 YAC523 (Gain=-) 1.2Vrms (typ.) which very small, device positive side gain (max: 31.5dB). Therefore, using YAC523 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 YAC523, noise which very small. Residual noise produced conventional configuration
1Vrms 6.3Vrms 200Vrms
Residual noise produced configuration that adopts YAC523
1.2Vrms
YAC523
38Vrms
+16dB
+30dB Zin=50k +30dB
Volume
PreAMP
MainAMP
-+16dB Volume PreAMP MainAMP
YAC523
Digital functions Serial data interface Writing volume control data into YAC523 performed through serial interface. SDATAI serial data input pin, SCLK clock input pin, chip select writing value volume. serial data that inputted from SDATAI (MSB first) taken into YAC523 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[55] D1[54] D1[53] D1[52] D1[51] D1[50] D1[7] D1[6] D1[5] D1[4] D1[3] D1[2] D1[1] D1[0]
D0[55] D0[54] D0[53] D0[52] D0[51] D0[50]
D0[7]
D0[6]
D0[5]
D0[4]
D0[3]
D0[2]
D0[1]
D0[0]
D1[55]
Assignment volume control data
D[55:48] Channel1 Volume data D[47:40] Channel2 Volume data D[39:32] Channel3 Volume data D[31:24] Channel4 Volume data D[23:16] Channel5 Volume data D[15: Channel6 Volume dataD1[55:0] volume data value change. Channel7 Volume dataD0[55:0] present volume data value.
Daisy chain Since multiple YAC523 devices connected using daisy chain connection, systems with channels more attained. example, connecting device with YAC526 (2ch digital volume) through daisy chain, 8.1ch system attained. connecting SDATAO YAC523 YAC526) SDATAI YAC526 (YAC523), YAC523 YAC526 controlled simultaneously without need complex addressing. also possible connect multiple YAC523, connect device with YAC520 through daisy chain.) 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 YAC523 YAC526) that connected with daisy chain into control registers simultaneously change volume value. Example: Assignment volume control data when combination YAC523 YAC526 YAC520) described below used.
Audio source
YAC526 YAC520
SDATAO SDATAI SCLK
YAC523
SDATAO SDATAI SCLK
D[71:64] [YAC526 YAC520] Channel1 Volume data D[63:56] [YAC526 YAC520] 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]
YAC523
Volume setting relationship between input code volume value shown following table. 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 YAC523 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 YAC523 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. Power reset started when AVSS 90%. time, AVDD should rise more. Since power-on reset unable completed when conditions cannot fulfilled, please perform re-setup volume register before canceling MUTE side set.
YAC523
Electrical characteristics
1.Absolute maximum rating Item Power supply voltage Analog input terminal voltage Digital input terminal voltage Storage temperature Note DGND=0V Symbol AVDD-AVSS VINA VIND TSTG Min. AVSS -0.6 AVSS -0.3 Max. 14.0 AVDD+0.6 VINA-AVSS 14.0V AVDD+0.3 Unit
Recommended operating conditions Item Symbol Analog power supply voltage(Positive) AVDD Analog power supply voltage(Negative) AVSS Operating ambient temperature Note DGND=0V Min. 4.75 -6.60 Typ. 6.00 -6.00 Max. 6.60 -4.75 Unit
Analog characteristics (Ta=25, AVDD=+6.0V, AVSS=-6.0V) Item Symbol Min. Typ. Gain range Gain -95.0 Step size Gain matching between channel (0-40dB, 1kHz) ±0.1 Gain matching between channel (-80dB, 1kHz) ±0.2 Step error (-80dB) ±0.1 Input resistance Output resistance Load capacitance 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 0.0004 Total harmonic distortion (In=1Vrms, Vol=0dB, 20kHz) THD2 0.0055 Inter channel isolation (Vol=0dB, 1kHz) -115 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 Max. +31.5 Unit Vrms Vrms Vrms Vrms Vrms
Power consumption Item Symbol Power consumption(AVDD=+6V, AVSS=-6V, CSN="H") Min. Typ. Max. Unit
characteristics Item High level input voltage level input voltage level output voltage Input leakage current Symbol Condition Min. Typ. Max. Unit
1.5mA
YAC523
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
YAC523
Typical analog characteristic long there description especially,
YAC523
YAC523
YAC523
Example system configuration
When there fear that voltage exceeding maximum rating applied analog input pins (IN1 IN7) YAC523, 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 YAC523 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
IN1IN7
AVSS VDD(<AVDD) Digital Controller 4.7k
Since SDATAO open drain output pin, connect power supply destination device connected through resistor. SDATAI YAC523 100µF 0.1µF 100µF 0.1µF 0.1µF
2.2k 2.2k 2.2k 2.2k 2.2k 2.2k 2.2k
10µF SDATAO SCLK SDATAI ZCEN2 ZCEN1 AVSS
0.1µF
AVSS
DGND
AVSS AVDD AVDD AVSS REF7B REF7A REF6B REF6A REF5B
OUT1 OUT2 OUT3
10µF 10µF 10µF 10µF 10µF 10µF 10µF
10µF 10µF 10µF 10µF 10µF 10µF 10µF
YAC523
OUT4 OUT5 OUT6 OUT7 REF1B
REF4A REF4B
REF3A
REF3B
REF2A REF2B
33µF
REF5A
33µF
33µF
33µF
33µF
33µF
33µF
REF1A
0.1µF 0.1µF
YAC523
MEMO
YAC523
External dimensions package
YAC523-VZ
C-PK48VP-0
12.00±0.40 10.00±0.30
10.00±0.30 12.00±0.40
P-0.65 TYP.
0.32 0.30
MIN. (STAND OFF)
1.70 MAX. (Installation height)
(1.00) 0-10°
0.15 TYP. 0.17 TYP. (LEAD THICKNESS)
0.50
(UNIT) mm(millimeters) shape molded corner slightly different from shape this diagram. figure parenthesis should used reference. Plastic body dimensions include burr resin. UNIT:
!"#$% !"#$%&'()*+,-./01 !"#$%&'()*+,-./012-3
YAC523
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