Audio Related Controller  
Part No. Features Supply Voltage     VCC Package
Output Voltage (Vrms) THD
U2429 Serial Data Control Dual Electronic Voltage

* 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)
4.5V~5.5V 5.0V SOP-8 DIP-8
Typ=1.3 Vrms 0.01 %
U7313 Audio Processor IC

* Support I2C bus interface
* 3 stereo inputs and selectable input gain
* Volume control in 1.25dB/step
* Loudness function
* 4 independent speakers control
6.0V~10.0V 9.0V SOP-28 DIP-28
Typ=2.5 Vrms 0.01 %
UM2752 2 Input/1 Output Stereo Audio Selector

* Dual Channel for Stereo Use
* 4.7~10V Operating Voltage
* 2 Input /1 Output Audio Selectors
* Bipolar Technology
* Low Output Noise: -114dBV typ.
* Low Distortion: 0.0009% typ.
4.7V~10.0V 9.0V SOP-14 TSSOP-14
Typ=2.5 Vrms 0.0009 %
UM2750 4 Input/1 Output Stereo Audio Selector

* Dual Channel for Stereo Use
* 4.7~13V Operating Voltage
* 4 Input /1 Output Audio Selectors
* Bipolar Technology
* Low Output Noise: -110dBV typ.
* Low Distortion: 0.005% typ.
4.7V~13.0V 9.0V SOP-16
Typ=3.0 Vrms 0.005 %
UPC1237 Protector IC For Stereo Power Amplifier

* Wide supply voltage range of 25V~60V.
* Contain a relay driver. (Max. I6=80mA)
* Latching / Automatic Reset function
* Built-in output offset detection function. Both positive and
negative output offset can be detected through pin2.
* AC voltage can be detected.
* External Time Delay Function
25.0V~60.0V 45.0V SIP-8
- -
UMPI06 Auto Identification Power Switch for Headphone Signal

* Supply voltage: 0.8V~3.6V
* Automatic input signal identification and switching
* Wide range of temperature
* Small package and SC59-6 available
0.8V~3.6V 3.0V SOT-26
3.5V(min) -
ULV1012 Pre-Amplified IC'S For High Gain 2-Wire Microphones 2 V~5V   SOT-26
   
ULV7084 * Operating voltage: 1.5V ~ 3.60V
* Current consumption: 80μA typ.
* Bias Voltage: +12.5V
* Input equivalent noise: 3μVrms (-110dBV)
* Frequency response: 20Hz~20kHz
* Maximum output Voltage: 281mVrms (-11dBV) at THD < 5%
* Gain: -3dB
* Operating temperature: -40ºC~85ºC
1.5V~3.6V 1.8V SOT-23-5
Typ=0.281 Vrms 0.2 %
ULV7011* * Single-Power-Supply                                                           * Operating voltage: 1.0V ~ 5.5V                                           * Wide Output Swing Range: VOM=2.9V min. @ 3.0V
* Low Operating Current: 15μA typ.
* Low Bias Current: IIB=1pA typ.
* Internal Compensarion Capacitor
* Package Outline: SOT-23-5
* CMOS Technology
1.0V~5.5V 3.0V SOT-23-5
VDD-0.1 ~ VSS+0.1 Ft=0.2MHz typ.
ULV7012* * Single-Power-Supply                                                           * Operating voltage: 1.0V ~ 5.5V                                           * Wide Output Swing Range: VOM=2.9V min. @ 3.0V
* Low Operating Currentn: 80μA typ.
* Low Bias Current: IIB=1pA typ.
* Internal Compensarion Capacitor
* Package Outline: SOT-23-5
* CMOS Technology
1.0V~5.5V 3.0V SOT-23-5
VDD-0.1 ~ VSS+0.1 Ft=0.2MHz typ.
ULV7013* * Single-Power-Supply                                                           * Operating voltage: 1.0V ~ 5.5V                                           * Wide Output Swing Range: VOM=2.9V min. @ 3.0V
* Low Operating Current: 200μA typ.
* Low Bias Current: IIB=1pA typ.
* Internal Compensarion Capacitor
* Package Outline: SOT-23-5
* CMOS Technology
1.0V~5.5V 3.0V SOT-23-5
VDD-0.1 ~ VSS+0.1 Ft=0.2MHz typ.
*: Under  Development