U2429

SERIAL DATA CONTROL DUAL ELECTRONIC VOLUME

DESCRIPTION

The UTC U2429 is a dual channel electronic volume controlled with 2-wire serial data.

The built-in reference circuit can compose of an electronic volume with less external parts.

SOP-8FEATURES

* Built-in reference circuit * Control with serial data

Volume 0 ~ -83dB (1dB/step), -∞

(Independent control is allowed in each channel) * Low noise and low distortion VNO = 5µVrms (ATT = -∞)

THD = 0.01% Typ. (V0 = 0.5Vrms)

DIP-8

PIN CONFIGURATION

VIN1VOUT1GNDDATA

1234

8765

VIN2VOUT2VCCCLOCK

PIN DESCRIPTION

PIN No. 1 2 3 4 5 6 7 8

PIN NAME VIN 1 VOUT1 GND DATA CLOCK VCC VOUT2 VIN2

FUNCTION

1-ch input pin 1-ch output pin Ground pin

Control data input pin. Inputs data in synchronization with clock. Clock input pin for transferring serial data.

Power supply pin. Stabilize the pin with decoupling capacitor. 2-ch output pin 1-ch input pin

UTC UNISONIC TECHNOLOGIES CO., LTD.

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QW-R502-031,A

UTC U2429 CMOS IC

BLOCK DIAGRAM

VIN28VOUT27VCC6CLOCK5VR 2+-VOL AMP 2+VOL AMP 1REF AMP-Vref-LOGICCONTROLVR 1+1VIN1

2VOUT1

3GND

4DATA

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC, VDD 6.0 V Power Dissipation

PD DIP-8 625 mW

SOP-8 440

℃ Operating Temperature Topr -20 ~ +75

℃ Storage Temperature Tstg -55 ~ +125

RECOMMENDED OPERATING CONDITIONS

PARAMETER

Supply voltage range Rated supply voltage

SYMBOL Vcc Vcc

RATINGS

4.5 ~ 5.5

5

UNIT V V

ELECTRICAL CHARACTERISTICS (VCC = 5V, Ta= 25℃, unless otherwise noted.)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Circuit current ICC mA 8 16 ATT=-∞ Maximum attenuation ATT dB -90 -80 Attenuation error ATT ATT=0 -2.0 0 2.0 dB Maximum input voltage VIM THD=1%, ATT=-6dB 1.5 1.7 Vrms Maximum output voltage VOM THD=1% 0.8 1.3 Vrms

μVrms Output noise voltage VNO1 ATT=0, Rg=0 4 10 μVrms ATT=-∞, Rg=0 VNO2 5 10 Total harmonic distortion THD f=1kHz, VO=0.5Vrms, ATT=0 0.01 0.05 % Channel separation CS f=1kHz dB -80 -70 UTC UNISONIC TECHNOLOGIES CO., LTD.

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QW-R502-031,A

UTC U2429 CMOS IC

DC CHARACTERISTICS OF DIGITAL BLOCK

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT \"L\" level input voltage VIL Data, clock pin 0.2VCC 0 ~ V \"H\" level input voltage VIH VCC 0.8VCCV ~

μA VI=0 Data, clock pin \"L\" level input current IIL -10 10 μA VI=5V \"H\" level input current IIH 10

AC CHARACTERISTICS OF DIGITAL BLOCK

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT μs Cycle time of clock tcr VDD5V 4

μs Pulse width of clock (\"H\" level) tWHC VDD5V 1.6 μs Pulse width of clock (\"L\" level) tWLC VDD5V 1.6 μs Clock rising time tr 0.4 VDD=5V

μs Clock falling time tf 0.4 VDD=5V

μs Data setup time tSD 0.8 VDD=5V

μs Data hold time tHD 0.8 VDD=5V

RELATIONSHIP BETWEEN DATA AND CLOCK

===CLOCKDATA

D0D1D2D3

Reads data signal at the rising edge of clock signal

D8D9D10Latch signal \"H\"Reads latch signal at the falling edge of clock

UTC UNISONIC TECHNOLOGIES CO., LTD.

3

QW-R502-031,A

UTC U2429 CMOS IC

SYSTEM CONFIGURATION

UTC U2429

2ch IN

VOLUME1ch IN

2ch OUT

1ch OUT

VOLUMELOGICCONTROLDATACLOCK

CLOCK AND DATA TIMING

tcr75%CLOCK

25%trtWHCtftWLCDATA

tSD

tHD

UTC UNISONIC TECHNOLOGIES CO., LTD.

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QW-R502-031,A

UTC U2429 CMOS IC

DATA INPUT FORMAT

D00/1D10/1D2D3D4D5VOLUMED6D7D8D91D1010: Both channels at a time1: A channel at a time0:1CH1:2CH

VOLUME CODE

ATT1 D2 D3 D4 D5 D6 0dB H L H L H -4dB L L H L H -8dB H H L L H -12dB L H L L H -16dB H L L L H -20dB L L L L H -24dB H H H H L -28dB L H H H L -32dB H L H H L -36dB L L H H L -40dB H H L H L -44dB L H L H L -48dB H L L H L -52dB L L L H L -56dB H H H L L -60dB L H H L L -64dB H L H L L -68dB L L H L L -72dB H H L L L -76dB L H L L L -80dB H L L L L L L L L L ATT2 D7 D8 0dB H H -1dB L H -2dB H L -3dB L L UTC assumes no responsibility for equipment failures that result from using products at values thatexceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, orother parameters) listed in products specifications of any and all UTC products described or containedherein. UTC products are not designed for use in life support appliances, devices or systems wheremalfunction of these products can be reasonably expected to result in personal injury. Reproduction inwhole or in part is prohibited without the prior written consent of the copyright owner. The informationpresented in this document does not form part of any quotation or contract, is believed to be accurateand reliable and may be changed without notice. UTC UNISONIC TECHNOLOGIES CO., LTD.

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QW-R502-031,A