| 品牌 |
nxp |
型號 |
ucb1400be |
| 封裝 |
qfp |
批號 |
04+ |
| 類型 |
音頻ic |
|
|
ucb1400
audio codec with touch screen controller
and power management monitor
rev. 02 — 21 june 2002 product data
1. general description
the ucb1400 is a stereo audio codec equipped with touch screen and power
management interfaces. it integrates an ac ’97 rev. 2.1 interface for communication
to an ac link host controller such as the intel xscale? processor. the stereo audio
codec inputs connect directly to a microphone or line level sources such as a cd
player. the stereo audio codec outputs at line level and can drive a headphone
directly. the touch screen interface connects directly to a 4-wire resistive touch
screen. a built-in 10-bit analog-to-digital converter provides readout of touch screen
and power management parameters. ten general-purpose i/o pins provide
programmable inputs and/or outputs to the system.
2. features
a73 48-pin lqfp surface mount package and low external component count for
minimal pcb space requirement
a73 integrated ac ’97 rev. 2.1 interface
a73 20-bit stereo audio codec supporting programmable sample rates, and
input/output gain control
a78 stereo line input and mono microphone input
a78 stereo line/headphone output with bass/treble control
a78 headphone driver with short circuit protection and virtual ground for dc
coupling
a73 4-wire resistive touch screen interface circuit supporting position, pressure and
plate resistance measurements
a73 10-bit successive approximation adc with internal track-and-hold circuit and
analog multiplexer for touch screen readout and monitoring of four external high
voltage (7.5 v) sources
a73 ten general purpose input/output pins
a73 3.3 v supply voltage and built-in power saving modes for portable and battery
powered applications.
3. applications
a73 smart mobile phones
a73 handheld pcs
a73 palm-top pcs
a73 personal intelligent communicators (pic)
a73 personal digital assistants (pda).