参数资料
型号: AD7795BRUZ-REEL
厂商: Analog Devices Inc
文件页数: 35/37页
文件大小: 0K
描述: IC ADC 16BIT 6CH LOW-PWR 24TSSOP
标准包装: 2,500
位数: 16
采样率(每秒): 470
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 2.5mW
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: 24-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 24-TSSOP
包装: 带卷 (TR)
输入数目和类型: 6 个差分,单极;6 个差分,双极
AD7794/AD7795
Rev. D | Page 6 of 36
Parameter1
AD7794/AD7795
Unit
Test Conditions/Comments
BIAS VOLTAGE GENERATOR
VBIAS
AVDD/2
V nom
VBIAS Generator Start-Up Time
ms/nF typ
Dependent on the capacitance connected to AIN;
TEMPERATURE SENSOR
Accuracy
±2
°C typ
Applies if user calibrates the temperature sensor
Sensitivity
0.81
mV/°C typ
LOW-SIDE POWER SWITCH
RON
7
Ω max
AVDD = 5 V
9
Ω max
AVDD = 3 V
Allowable Current2
30
mA max
Continuous current
DIGITAL OUTPUTS (P1 and P2)
VOH, Output High Voltage2
AVDD 0.6
V min
AVDD = 3 V, ISOURCE = 100 μA
VOL, Output Low Voltage2
0.4
V max
AVDD = 3 V, ISINK = 100 μA
VOH, Output High Voltage2
4
V min
AVDD = 5 V, ISOURCE = 200 μA
VOL, Output Low Voltage2
0.4
V max
AVDD = 5 V, ISINK = 800 μA
INTERNAL/EXTERNAL CLOCK
Internal Clock
Frequency2
64 ± 3%
kHz
min/max
Duty Cycle
50:50
% typ
External Clock
Frequency
64
kHz nom
A 128 kHz external clock can be used if the divide-by-2
function is used (Bit CLK1 = CLK0 = 1)
Duty Cycle
45:55 to 55:45
% typ
Applies for external 64 kHz clock, a 128 kHz clock can
have a less stringent duty cycle
LOGIC INPUTS
VINL, Input Low Voltage
0.8
V max
DVDD = 5 V
0.4
V max
DVDD = 3 V
VINH, Input High Voltage
2.0
V min
DVDD = 3 V or 5 V
SCLK (Schmitt-Triggered Input),
CLK, and DIN2
AD7794B/AD7795B
VT(+)
1.4/2
V min/max
DVDD = 5 V
VT()
0.8/1.7
V min/max
DVDD = 5 V
VT(+) to VT()
0.1/0.17
V min/max
DVDD = 5 V
VT(+)
0.9/2
V min/max
DVDD = 3 V
VT()
0.4/1.35
V min/max
DVDD = 3 V
VT(+) to VT()
0.06/0.13
V min/max
DVDD = 3 V
AD7794C
VT(+)
1.35/2.05
V min/max
DVDD = 5 V
VT()
0.8/1.9
V min/max
DVDD = 5 V
VT(+) to VT()
0.1/0.19
V min/max
DVDD = 5 V
VT(+)
0.9/2
V min/max
DVDD = 3 V
VT()
0.4/1.35
V min/max
DVDD = 3 V
VT(+) to VT()
0.06/0.15
V min/max
DVDD = 3 V
Input Currents
±10
μA max
VIN = DVDD or GND
Input Capacitance
10
pF typ
All digital inputs
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