参数资料
型号: AD7705BN
厂商: Analog Devices Inc
文件页数: 41/44页
文件大小: 0K
描述: IC ADC 16BIT 2CH 16-DIP
标准包装: 25
位数: 16
采样率(每秒): 500
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 1mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 16-DIP(0.300",7.62mm)
供应商设备封装: 16-PDIP
包装: 管件
输入数目和类型: 2 个差分,单极;2 个差分,双极
配用: EVAL-AD7705EBZ-ND - BOARD EVALUATION FOR AD7705
AD7705/AD7706
Rev. C | Page 6 of 44
Parameter
B Version1
Unit
Conditions/Comments
AIN Input Sampling Rate, fS
Gain × fCLKIN/64
For gains of 1 to 4
fCLKIN/8
For gains of 8 to 128
Reference Input Range
REF IN(+) REF IN() Voltage
1/1.75
V min/V max
VDD = 2.7 V to 3.3 V
VREF = 1.225 ± 1% for specified performance
REF IN(+) REF IN() Voltage
1/3.5
V min/V max
VDD = 4.75 V to 5.25 V
VREF = 2.5 ± 1% for specified performance
REF IN Input Sampling Rate, fS
fCLKIN/64
LOGIC INPUTS
Input Current
All Inputs, Except MCLK IN
±1
μA max
Typically ±20 nA
MCLK IN
±10
μA max
Typically ±2 μA
All Inputs, Except SCLK and MCLK IN
Input Low Voltage, VINL
0.8
V max
VDD = 5 V
0.4
V max
VDD = 3 V
Input High Voltage, VINH
2.0
V min
VDD = 3 V and 5 V
SCLK Only (Schmitt-Triggered Input)
VDD = 5 V nominal
VT+
1.4/3
V min/V max
VT
0.8/1.4
V min/V max
VT+ VT
0.4/0.8
V min/V max
SCLK Only (Schmitt-Triggered Input)
VDD = 3 V nominal
VT+
1/2
V min/V max
VT
0.4/1.1
V min/V max
VT+ VT
0.375/0.8
V min/V max
MCLK IN Only
VDD = 5 V nominal
Input Low Voltage, VINL
0.8
V max
Input High Voltage, VINH
3.5
V min
MCLK IN Only
VDD = 3 V nominal
Input Low Voltage, VINL
0.4
V max
Input High Voltage, VINH
2.5
V min
LOGIC OUTPUTS (Including MCLK OUT)
Output Low Voltage, VOL
0.4
V max
ISINK = 800 μA, except for MCLK OUT;13 VDD = 5 V
Output Low Voltage, VOL
0.4
V max
ISINK = 100 μA, except for MCLK OUT;13 VDD = 3 V
Output High Voltage, VOH
4
V min
ISOURCE = 200 μA, except for MCLK OUT;13 VDD = 5 V
Output High Voltage, VOH
VDD 0.6
V min
ISOURCE = 100 μA, except for MCLK OUT;13 VDD = 3 V
Floating State Leakage Current
±10
μA max
Floating State Output Capacitance14
9
pF typ
Data Output Coding
Binary
Unipolar mode
Offset binary
Bipolar mode
SYSTEM CALIBRATION
Positive Full-Scale Limit15
(1.05 × VREF)/gain
V max
Gain is the selected PGA gain (1 to 128)
Negative Full-Scale Limit15
(1.05 × VREF)/gain
V max
Gain is the selected PGA gain (1 to 128)
Offset Limit15
(1.05 × VREF)/gain
V max
Gain is the selected PGA gain (1 to 128)
Input Span16
(0.8 × VREF)/gain
V min
Gain is the selected PGA gain (1 to 128)
(2.1 × VREF)/gain
V max
Gain is the selected PGA gain (1 to 128)
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