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參數資料
型號: AD7872TQ
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: LC2MOS Complete 14-Bit, Sampling ADCs
中文描述: 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP16
封裝: HERMETIC SEALED, CERAMIC, DIP-16
文件頁數: 5/16頁
文件大小: 344K
代理商: AD7872TQ
AD7871/AD7872
–5–
REV. D
AD7872 PIN FUNCT ION DE SCRIPT ION
DIP
No.
Mnemonic
Function
1
CONT ROL
Control Input. With this pin at 0 V, the SCLK is noncontinuous; with this pin at –5 V, the SCLK
is continuous.
Convert Start. A low to high transition on this input puts the track/hold into the hold mode. T his
input is asynchronous to the CLK .
Clock Input. An external T T L-compatible clock may be applied to this input. Alternatively, tying
this pin to V
SS
, enables the internal laser-trimmed oscillator.
T his is an active low three-state output that provides a framing pulse for serial data. An external
4.7 k
pull-up resistor is required on
SSTRB
.
Serial Clock. SCLK is the gated serial clock output derived from the internal or external ADC
clock. If the 14/
8
/CLK input is at –5 V, then the SCLK runs continuously. With CONT ROL
at 0 V, it is gated off (three-state) after serial transmission is complete. SCLK is an open-drain
output and requires an external 2 k
pull-up resistor.
Serial Data. T his is the three-state serial data output used in conjunction with SCLK and
SSTRB
in
serial data transmission. Serial data is valid on the falling edge of SCLK , when
SSTRB
is low. An
external 4.7 k
pull-up resistor is required on SDAT A.
No Connect.
Digital Ground. Ground return for digital circuitry.
Positive Supply for analog circuitry, +5 V
±
5%.
No Connect.
Decoupling point for on-chip reference. Connect 10 nF capacitor between this pin and AGND.
Analog Ground. Ground reference for analog circuitry.
Voltage Reference Output. T he internal 3 V reference is provided at this pin. T he external load
capability is 500
μ
A.
Analog Input. T he input range is
±
3 V.
Negative Supply, –5 V
±
5%.
Positive Supply for analog circuitry, +5 V
±
5%. Pin 16 and Pin 9 should be connected together.
2
CONVST
3
CLK
4
SSTRB
5
SCLK
6
SDAT A
7
8
9
10
11
12
13
NC
DGND
V
DD
NC
C
REF
AGND
REF OUT
14
15
16
V
IN
V
SS
V
DD
PIN CONFIGURAT IONS
DIP
DIP, SOIC
PLC C
相關PDF資料
PDF描述
AD7873 Touch Screen Digitizer
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AD7873ACPZ Touch Screen Digitizer
AD7873ACPZ3 10-Bit, 60 MSPS ADC SE/Diff, Int/Ext Ref., program. i/p range w/Pwrdown, comp. to ADS822/4/5/6/8 28-SSOP
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相關代理商/技術參數
參數描述
AD7872TQ/883B 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter, 14-Bit
AD7872TQ3 制造商:AD 制造商全稱:Analog Devices 功能描述:LC2MOS Complete 14-Bit, Sampling ADCs
AD7873 制造商:AD 制造商全稱:Analog Devices 功能描述:Touch Screen Digitizer
AD7873ACP 制造商:Analog Devices 功能描述:TOUCH SCREEN DIGITIZER
AD7873ACP-REEL 制造商:Analog Devices 功能描述:TOUCH SCREEN DIGITIZER
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