参数资料
型号: EVAL-AD7730LEBZ
厂商: Analog Devices Inc
文件页数: 41/53页
文件大小: 0K
描述: BOARD EVALUATION FOR AD7730
标准包装: 1
ADC 的数量: 1
位数: 24
采样率(每秒): 600
数据接口: 串行
输入范围: ±80 mV
在以下条件下的电源(标准): 125mW @ 600SPS
工作温度: -40°C ~ 85°C
已用 IC / 零件: AD7730
已供物品: 板,CD
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–46–
Parameter
B Version1
Units
Conditions/Comments
LOGIC INPUTS
Input Current
±10
μA max
All Inputs Except SCLK and MCLK IN
VINL, Input Low Voltage
0.8
V max
DVDD = +5 V
VINL, Input Low Voltage
0.4
V max
DVDD = +3 V
VINH, Input High Voltage
2.0
V min
SCLK Only (Schmitt Trigerred Input)
VT+
1.4/3
V min to V max
DVDD = +5 V
VT+
1/2.5
V min to V max
DVDD = +3 V
VT–
0.8/1.4
V min to V max
DVDD = +5 V
VT–
0.4/1.1
V min to V max
DVDD = +3 V
VT+ – VT–
0.4/0.8
V min to V max
DVDD = +5 V
VT+ – VT–
0.4/0.8
V min to V max
DVDD = +3 V
MCLK IN Only
VINL, Input Low Voltage
0.8
V max
DVDD = +5 V
VINL, Input Low Voltage
0.4
V max
DVDD = +3 V
VINH, Input High Voltage
3.5
V min
DVDD = +5 V
VINH, Input High Voltage
2.5
V min
DVDD = +3 V
LOGIC OUTPUTS (Including MCLK OUT)
VOL, Output Low Voltage
ISINK = 800
μA Except for MCLK OUT14;
0.4
V max
VDD15 = +5 V
VOL, Output Low Voltage
ISINK = 100
μA Except for MCLK OUT14;
0.4
V max
VDD15 = +3 V
VOH, Output High Voltage
ISOURCE = 200
μA Except for MCLK OUT14;
4.0
V min
VDD15 = +5 V
VOH, Output High Voltage
ISOURCE = 100
μA Except for MCLK OUT14;
VDD – 0.6 V
V min
VDD15 = +3 V
Floating State Leakage Current
±10
μA max
Floating State Output Capacitance2
9
pF typ
TRANSDUCER BURNOUT
AIN1(+) Current
–100
nA nom
AIN1(–) Current
100
nA nom
Initial Tolerance @ 25
°C
±10
% typ
Drift2
0.1
%/
°C typ
OFFSET (TARE) DAC
Resolution
6
Bit
LSB Size
2.3/2.6
mV min/mV max
2.5 mV Nominal with 5 V Reference (REF IN/2000)
DAC Drift16
3.5
ppm/
°C max
DAC Drift vs. Time4, 16
25
ppm/1000 Hours typ
Differential Linearity
LSB max
Guaranteed Monotonic
SYSTEM CALIBRATION
Positive Full-Scale Calibration Limit17
1.05
× FS
V max
FS Is the Nominal Full-Scale Voltage
(10 mV, 20 mV, 40 mV or 80 mV)
Negative Full-Scale Calibration Limit17
–1.05
× FS
V max
Offset Calibration Limit18
–1.05
× FS
V max
Input Span17
0.8
× FS
V min
2.1
× FS
V max
POWER REQUIREMENTS
Power Supply Voltages
AVDD – AGND Voltage
+4.75 to +5.25
V min to V max
DVDD Voltage
+2.7 to +5.25
V min to V max
With AGND = 0 V
Power Supply Currents
External MCLK. Digital I/Ps = 0 V or DVDD
AVDD Current (Normal Mode)
3.7
mA max
All Input Ranges Except 0 mV to +10 mV and
±10 mV,
Typically 2.7 mA
AVDD Current (Normal Mode)
5.5
mA max
Input Ranges of 0 mV to +10 mV and
±10 mV Only,
Typically 4 mA
DVDD Current (Normal Mode)
0.45
mA max
DVDD of 2.7 V to 3.3 V, Typically 0.3 mA
DVDD Current (Normal Mode)
1
mA max
DVDD of 4.75 V to 5.25 V, Typically 0.75 mA
AVDD + DVDD Current (Standby Mode)
21
μA max
Typically 13
μA. External MCLK IN = 0 V or DVDD
Power Dissipation
AVDD = DVDD = +5 V. Digital I/Ps = 0 V or DVDD
Normal Mode
23.5
mW max
All Input Ranges Except 0 mV to +10 mV and
±10 mV,
Typically 15 mW
32.5
mW max
Input Ranges of 0 mV to +10 mV and
±10 mV Only,
Typically 23.75 mW
Standby Mode
105
μW max
Typically 65
μW. External MCLK IN = 0 V or DVDD
AD7730/AD7730L
±0.75
REV. B
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