参数资料
型号: AD7732BRUZ-REEL
厂商: Analog Devices Inc
文件页数: 25/32页
文件大小: 0K
描述: IC ADC 24BIT 2CH SIG-DEL 28TSSOP
标准包装: 2,500
位数: 24
采样率(每秒): 15.4k
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 100mW
电压电源: 模拟和数字
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 28-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 28-TSSOP
包装: 带卷 (TR)
输入数目和类型: 2 个差分,单极;2 个差分,双极
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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