參數(shù)資料
型號: AD7732BRUZ-REEL7
廠商: Analog Devices Inc
文件頁數(shù): 25/32頁
文件大?。?/td> 0K
描述: IC ADC 24BIT 2CH SIG-DEL 28TSSOP
標(biāo)準(zhǔn)包裝: 1,000
位數(shù): 24
采樣率(每秒): 15.4k
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 100mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 28-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 28-TSSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 2 個差分,單極;2 個差分,雙極
配用: EVAL-AD7732EBZ-ND - BOARD EVAL FOR AD7732
AD7732
Rev. A | Page 31 of 32
+
10
μF
0.1
μF
+
10
μF
0.1
μF
ANALOG
INPUTS
R=15.5k
Ω
R
CLOCK
GENERATOR
MCLKIN
MCLKOUT
33pF
6.144MHz
AIN0(+)
BIAS0(+)
RA
RB
BIAS0(–)
RC
RD
±10V
DIFFERENTIAL
VOLTAGE
±10V
DIFFERENTIAL
VOLTAGE
(MAX ±16.5V
ABSOLUTE
VOLTAGE
TO AGND)
±11.5V COMMON-
MODE VOLTAGE
7R=108.5k
Ω
MUX
R
7R
24-BIT
Σ-Δ ADC
BUFFER
DVDD
AIN0(–)
AIN1(+)
BIAS1(+)
REFIN(–)
REFIN(+)
AGND
10
μF
+
0.01
μF
+
10
μF
AD780
VOUT
+VIN
TEMP
+2.5V
AD7732
R
7R
SERIAL
INTERFACE
AND
CONTROL
LOGIC
SCLK
DIN
DOUT
CS
RDY
RESET
DGND
HOST
SYSTEM
AIN1(–)
BIAS1(–)
AVDD
DVDD
AVDD
Figure 29. Typical Connections for the AD7732 Application
High Common-Mode Voltage Application
Using additional thin film resistors on AIN0 and an external operational amplifier with a ±15 V power supply, the AD7732 AIN0 can
easily be configured to accept high common-mode voltages.
+15V
–15V
+
10
μF
0.1
μF
+
10
μF
0.1
μF
ANALOG
INPUTS
R=15.5k
Ω
2R
CLOCK
GENERATOR
MCLKIN
MCLKOUT
33pF
6.144MHz
AIN0(+)
BIAS0(+)
RA
RB
BIAS0(–)
RC
RD
±10V
DIFFERENTIAL
VOLTAGE
(±42V ABSOLUTE
MAX VOLTAGE
TO AGND)
±37V COMMON-
MODE VOLTAGE
7R=108.5k
Ω
MUX
7R
24-BIT
Σ-Δ ADC
BUFFER
DVDD
AIN0(–)
REFIN(–)
REFIN(+)
AGND
10
μF
+
0.01
μF
+
10
μF
AD780
VOUT
+VIN
TEMP
+2.5V
AD7732
SERIAL
INTERFACE
AND
CONTROL
LOGIC
SCLK
DIN
DOUT
CS
RDY
RESET
DGND
HOST
SYSTEM
AVDD
DVDD
AVDD
Figure 30. High Common-Mode Voltage Application
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