参数资料
型号: AD7890BNZ-2
厂商: Analog Devices Inc
文件页数: 23/28页
文件大小: 0K
描述: IC DAS 12BIT 8CH 24-DIP
标准包装: 15
类型: 数据采集系统(DAS)
分辨率(位): 12 b
采样率(每秒): 117k
数据接口: 串行
电压电源: 单电源
电源电压: 5V
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 24-DIP(0.300",7.62mm)
供应商设备封装: 24-PDIP
包装: 管件
AD7890
Rev. C | Page 4 of 28
Parameter
A Versions1
B Versions
S Version
Unit
Test Conditions/Comments
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
VDD = 5 V ± 5%
Input Low Voltage, VINL
0.8
V max
VDD = 5 V ± 5%
Input Current, IIN
±10
μA max
VIN = 0 V to VDD
Input Capacitance, CIN5
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
4.0
V min
ISOURCE = 200 μA
Output Low Voltage, VOL
0.4
V max
ISINK = 1.6 mA
Serial Data Output Coding
AD7890-10
Twos Complement
AD7890-4
Straight (Natural) Binary
AD7890-2
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
5.9
μs max
fCLK IN = 2.5 MHz, MUX OUT, connected to
SHA IN
Track/Hold Acquisition Time2, 5
2
μs max
POWER REQUIREMENTS
VDD
5
V nom
± 5% for specified performance
IDD (Normal Mode)
10
mA max
Logic inputs = 0 V or VDD
IDD (Standby Mode)6 @ 25°C
15
μA typ
Logic inputs = 0 V or VDD
Power Dissipation
Normal Mode
50
mW max
Typically 30 mW
Standby Mode @ 25°C
75
μW typ
1 Temperature ranges are as follows: A, B Versions: 40°C to +85°C; S Version: 55°C to +125°C.
2 See the Terminology section.
3 This sample rate is only achievable when using the part in external clocking mode.
4 Full-scale error match applies to positive full scale for the AD7890-2 and AD7890-4. It applies to both positive and negative full scale for the AD7890-10.
5 Sample tested @ 25°C to ensure compliance.
6 Analog inputs on AD7890-10 must be at 0 V to achieve correct power-down current.
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