參數(shù)資料
型號： CS4202-JQZ
廠商： Cirrus Logic Inc
文件頁數(shù)： 64/66頁
文件大?。?/td> 0K
描述： IC AC 97 W/HEADPHONE AMP 48TQFP
標(biāo)準(zhǔn)包裝： 250
類型： 音頻編解碼器 '97
數(shù)據(jù)接口： 串行
分辨率（位）： 18，20 b
ADC / DAC 數(shù)量： 1 / 1
三角積分調(diào)變： 是
動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db)： 90 / 90
電壓 - 電源，模擬： 4.75 V ~ 5.25 V
電壓 - 電源，數(shù)字： 4.75 V ~ 5.25 V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 48-LQFP
供應(yīng)商設(shè)備封裝： 48-TQFP（9x9）
包裝： 管件
產(chǎn)品目錄頁面： 754 (CN2011-ZH PDF)
其它名稱： 598-1181
Micrel, Inc.
MIC3001
August 2004
7
M9999-082404-A
hbwhelp@micrel.com or (408) 955-1690
Pin Configuration
24-Pin QFN
Pin Description
Pin Number
Pin Name
Pin Function
1
FB
Analog Input. Feedback voltage for the APC loop op-amp. Polarity and scale are
programmable via the APC configuration bits. Connect to VBIAS if APC is not used.
2
VMPD
Analog Input. Multiplexed A/D converter input for monitoring transmitted optical power via
a monitor photodiode. In most applications, VMPD will be connected directly to FB. The
input range is 0 - VREF or 0 - VREF/4 depending on the setting of the APC configuration
bits
3
GNDA
Ground return for analog functions.
4
VDDA
Power supply input for analog functions.
5
VILD–
Analog Input. Reference terminal for the multiplexed pseudo-differential A/D converter
inputs for monitoring laser bias current via a sense resistor (VILD+ is the sensing input).
Tie to VDD or GND to reference the voltage sensed on VILD+ to VDD or GND
respectively. Limited common-mode voltage range, see “Applications Information” section
for more details.
6
VILD+
Analog Input. Multiplexed A/D input for monitoring laser bias current via a sense resistor
(signal input); accommodates inputs referenced to VDD or GND (see pin 5 description).
Limited common-mode voltage range, see “Applications Information” section for more
details.
7
SHDN (TXFIN)
Digital output; Programmable polarity. When used as shutdown output (SHDN), asserted
at the detection of a fault condition that can be used to activate a second series transistor
in the laser current path, enhancing protection against single-point failures. When
programmed as TXFIN, it is an input for external fault signals to be ORed with the internal
fault sources to drive TXFAULT.
8
SHDN (TXFIN)
Analog Input. Multiplexed A/D converter input for monitoring received optical power. The
input range is 0 to VREF. A 5-bit programmable EEPOT on this pin provides for coarse
calibration and ranging of the RX power measurement.
9
XPN
Analog Input/Output. Optional connection to an external PN junction for sensing
temperature at a remote location. The Zone bit in OEMCFG1 determines whether
temperature is measured using the on-chip sensor or the remote PN junction.
10
TXFAULT
Digital Output; Open-Drain. A high level indicates a hardware fault impeding transmitter
operation. The state of this input is always reflected in the TXFLT bit.
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