参数资料
型号: AD7708BRZ-REEL
厂商: Analog Devices Inc
文件页数: 43/44页
文件大小: 0K
描述: IC ADC 16BIT R-R 8/10CH 28SOIC
标准包装: 1,000
位数: 16
采样率(每秒): 1.37k
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 3.84mW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 带卷 (TR)
输入数目和类型: 4 个差分,单极;4 个差分,双极;8 个伪差分,单极;8 个伪差分,双极
配用: EVAL-AD7708EBZ-ND - BOARD EVAL FOR AD7708
REV. 0
–8–
AD7718–SPECIFICATIONS1 (AV
DD = 2.7 V to 3.6 V or 4.75 V to 5.25 V, DVDD = 2.7 V to 3.6 V or 4.75 V to 5.25 V, REFIN(+) =
2.5 V ; REFIN(–) = AGND; AGND = DGND = 0 V; XTAL1/XTAL2 = 32.768 kHz Crystal Input Buffer Enabled. All specifications TMIN to TMAX unless otherwise noted.)
AD7708
Parameter
B Grade
Unit
Test Conditions
LOGIC INPUTS (Continued)
SCLK Only (Schmitt-Triggered Input)
2
VT(+)
1.4/2
V min/V max
DVDD = 5 V
VT(–)
0.8/1.4
V min/V max
DVDD = 5 V
VT(+)–VT(–)
0.3/0.85
V min/V max
DVDD = 5 V
VT(+)
0.95/2
V min/V max
DVDD = 3 V
VT(–)
0.4/1.1
V min/V max
DVDD = 3 V
VT(+)–VT(–)
0.3/0.85
V min/V max
DVDD = 3 V
XTAL1 Only
2
VINL, Input Low Voltage
0.8
V max
DVDD = 5 V
VINH, Input High Voltage
3.5
V min
DVDD = 5 V
VINL, Input Low Voltage
0.4
V max
DVDD = 3 V
VINH, Input High Voltage
2.5
V min
DVDD = 3 V
Input Currents
±10
A max
Logic Input = DVDD
–70
A max
Logic Input = DGND, Typical –40
A @ 5 V
and –20
A at 3 V
Input Capacitance
10
pF typ
All Digital Inputs
LOGIC OUTPUTS (Excluding XTAL2)
5
VOH, Output High Voltage
2
DVDD – 0.6
V min
DVDD = 3 V, ISOURCE = 100
A
VOL, Output Low Voltage
2
0.4
V max
DVDD = 3 V, ISINK = 100
A
VOH, Output High Voltage
2
4V min
DVDD = 5 V, ISOURCE = 200
A
VOL, Output Low Voltage
2
0.4
V max
DVDD = 5 V, ISINK = 1.6 mA
Floating State Leakage Current
±10
A max
Floating State Output Capacitance
±10
pF typ
Data Output Coding
Binary
Unipolar Mode
Offset Binary
Bipolar Mode
SYSTEM CALIBRATION
2
Full-Scale Calibration Limit
1.05
× FS
V max
Zero-Scale Calibration Limit
–1.05
× FS
V min
Input Span
0.8
× FS
V min
2.1
× FS
V max
START-UP TIME
From Power-On
300
ms typ
From Power-Down Mode
1
ms typ
300
ms typ
Oscillator Powered Down
POWER REQUIREMENTS
Power Supply Voltages
AVDD and DVDD can be operated independently of each other.
AVDD–AGND
2.7/3.6
V min/max
AVDD = 3 V nom
4.75/5.25
V min/max
AVDD = 5 V nom
DVDD–DGND
2.7/3.6
V min/max
DVDD = 3 V nom
4.75/5.25
V min
DVDD = 5 V nom
DIDD (Normal Mode)
0.55
mA max
DVDD = 3 V, 0.43 mA typ
0.65
mA
DVDD = 5 V, 0.5 mA typ
AIDD (Normal Mode)
1.1
mA
AVDD = 3 V or 5 V, 0.85 mA typ
DIDD (Power-Down Mode)
10
A max
DVDD = 3 V, 32.768 kHz Osc. Running
2
A max
DVDD = 3 V, Oscillator Powered Down
30
A max
DVDD = 5 V, 32.768 kHz Osc. Running
8
A max
DVDD = 5 V, Oscillator Powered Down
AIDD (Power-Down Mode)
1
A max
AVDD = 3 V or 5 V
Power Supply Rejection (PSR)
Input Range =
±2.56 V, AIN = 1 V
Chop Disabled
70
dB min
95 dB typ
Chop Enabled
100
dB typ
NOTES
1Temperature range is –40
°C to +85°C.
2Not production tested, guaranteed by design and/or characterization data at release.
3Following a self-calibration this error will be in the order of the noise for the programmed gain and update selected. A system calibration will completely
remove this error.
4Recalibration at any temperature will remove these errors.
5I/O Port Logic Levels are with respect to AV
DD and AGND.
Specifications are subject to change without notice.
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