UNISONIC TECHNOLOGIES CO., LTD
U2429
CMOS IC
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.
DIP-8
FEATURES
SOP-8
* 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)
ORDERING INFORMATION
Ordering Number
Lead Free
U2429L-D08-T
-
Halogen Free
U2429G-D08-T
U2429G-S08-R
Package
Packing
DIP-8
SOP-8
Tube
Tape Reel
MARKING
DIP-8
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SOP-8
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CMOS IC
PIN CONFIGURATION
PIN DESCRIPTION
PIN NO
1
2
3
4
5
6
7
8
PIN NAME
VIN 1
VOUT1
GND
DATA
CLOCK
VCC
VOUT2
VIN2
DESCRIPTION
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
BLOCK DIAGRAM
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U2429
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
VCC, VDD
RATINGS
UNIT
6.0
V
SOP-8
440
mW
Power Dissipation
PD
DIP-8
625
mW
Junction Temperature
TJ
125
°C
Operating Temperature
TOPR
-20 ~ +85
°C
Storage Temperature
TSTG
-40 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
Supply Voltage
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply voltage range
Rated supply voltage
Output noise voltage
Total harmonic distortion
Channel separation
UNIT
V
V
SYMBOL
ICC
ATT
ATT
VIM
VOM
VNO1
VNO2
THD
CS
TEST CONDITIONS
ATT=-∞
ATT=0
THD=1%, ATT=-6dB
THD=1%
ATT=0, Rg=0
ATT=-∞, Rg=0
f=1kHz, VO=0.5Vrms, ATT=0
f=1kHz
MIN
-2.0
1.5
0.8
TYP
8
-90
0
1.7
1.3
4
5
0.01
-80
MAX
16
-80
2.0
10
10
0.05
-70
UNIT
mA
dB
dB
Vrms
Vrms
μVrms
μVrms
%
dB
DC CHARACTERISTICS OF DIGITAL BLOCK
PARAMETER
"L" level input voltage
"H" level input voltage
"L" level input current
"H" level input current
RATINGS
4.5 ~ 5.5
5
ELECTRICAL CHARACTERISTICS (VCC = 5V, TA= 25°C, unless otherwise noted)
PARAMETER
Circuit current
Maximum attenuation
Attenuation error
Maximum input voltage
Maximum output voltage
SYMBOL
VCC
VCC
SYMBOL
VIL
VIH
IIL
IIH
TEST CONDITIONS
Data, clock pin
VI=0
VI=5V
Data, clock pin
MIN
0
0.8×VCC
-10
TYP
MAX
UNIT
0.2×VCC
V
VCC
V
10
μA
10
μA
AC CHARACTERISTICS OF DIGITAL BLOCK
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Cycle time of clock
tcr
VDD=5V
4
μs
Pulse width of clock ("H" level)
tWHC
VDD=5V
1.6
μs
Pulse width of clock ("L" level)
tWLC
VDD=5V
1.6
μs
Clock rising time
tr
VDD=5V
0.4
μs
Clock falling time
tf
VDD=5V
0.4
μs
Data setup time
tSD
VDD=5V
0.8
μs
Data hold time
tHD
VDD=5V
0.8
μs
Note: UTC products on power start, DATA conversion or IC first start are all without delay time. When DATA reading
is completed, the output immediately respond.
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U2429
CMOS IC
RELATIONSHIP BETWEEN DATA AND CLOCK
CLOCK
DATA
D0
D1
D2
D3
Reads data signal at the rising edge of clock signal
SYSTEM CONFIGURATION
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U2429
CMOS IC
CLOCK AND DATA TIMING
DATA INPUT FORMAT
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CMOS IC
VOLUME CODE
ATT1
0dB
-4dB
-8dB
-12dB
-16dB
-20dB
-24dB
-28dB
-32dB
-36dB
-40dB
-44dB
-48dB
-52dB
-56dB
-60dB
-64dB
-68dB
-72dB
-76dB
-80dB
D2
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
D3
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
D4
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
D5
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
D6
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
ATT2
0dB
-1dB
-2dB
-3dB
D7
H
L
H
L
D8
H
H
L
L
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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