X9460

Features:

• Dual Audio Control Two 32 Taps Log Pots
• Zero Amplitude Wiper Switching
• 2-Wire Serial Interface 4 Slave Byte Addresses for Writes[A1,A0]
• Total Resistance: 33kΩ Each XDCP (Typical)
• Dual Voltage Operation V+/V- = ±2.7 to ±5.5V
• Temp Range = -40°C to +85°C
• Package Options 14 L d TSSOP
• Zero Amplitude Wiper Switching
• Pb-Free Plus Anneal Available (RoHS Compliant)




Application

• Set Top Boxes
• Stereo Amplifiers
• DVD Players
• Portable Audio Products

• Set Top Boxes
• Stereo Amplifiers
• DVD Players
• Portable Audio Products




Pinout






Specifications

Temperature under Bias. . . . . . . . . . . . . . . .-65°C to +135°C
Storage Temperature . . . . . . . . . . . . . . . . . -65°C to +150°C
Voltage on SDA, SCL or any Address Input
with Respect to V_SS . . . . . . . . . . . . . . . . . . . . . . . . -1V to +6V
Voltage on V+ (referenced to V_SS). . . . . . . . . . . . . . . . . . . +6V
Voltage on V- (referenced to V_SS) . . . . . . . . . . . . . . . . . . . .-6V
(V+) - (V-) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12V
Any R_H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..V+
Any R_L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VLead
Temperature (Soldering, 10s) . . . . . . . . . . . . . . . . . . . . 300°C
I_W max (10s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3mA
CAUTION: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only; functional operation of the device (at these or any other conditions above those listed in the operational sections of this specification) is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Description

The X9460 integrates two digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit. The two X9460 XDCPs can be used as stereo gain controls in audio applications. Read/Write operations can directly access each channel independently or both channels simultaneously. Increment/Decrement can adjust each channel independently or both channels simultaneously. The X9460 contains a zero amplitude wiper switching circuit that delays wiper changes until the next zero crossing of the audio signal. The digitally controlled potentiometer is implemented using 31 polysilicon resistors in a log array. Between each of the resistors are tap points connected to the wiper terminal through switches. The XDCPs are designed to minimize wiper noise to avoid pops and clicks during audio volume transitions. The position of the wiper on the array is controlled by the user through the 2-wire serial bus interface. Power-up reset the wiper to the mute position.