AD7732 Analog Devices, AD7732 Datasheet - Page 3

• Manufacturer Part Number: AD7732
• Manufacturer: Analog Devices

Specifications of AD7732

• Resolution (bits): 24bit
• # Chan: 2
• Sample Rate: 3.05MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: Bip 10V,Bip 5.0V,Uni 10V,Uni 5.0V
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

AD7732—SPECIFICATIONS
Table 1. (–40°C to +105°C; AV
REFIN(–) = AGND; RA, RB, RC, RD open circuit; AIN Range = ±10 V; f
Parameter
ADC PERFORMANCE
CHOPPING ENABLED
ADC PERFORMANCE
CHOPPING DISABLED
ANALOG INPUTS
Conversion Time Rate
No Missing Codes
Output Noise
Resolution
Integral Nonlinearity (INL)
Integral Nonlinearity (INL)
Offset Error (Unipolar, Bipolar)
Offset Drift vs. Temperature
Gain Error
Gain Drift vs. Temperature
Positive Full-Scale Error
Positive Full-Scale Drift vs. Temp.
Bipolar Negative Full-Scale Error
Common-Mode Rejection
Power Supply Sensitivity
Channel-to-Channel Isolation
Conversion Time Rate
No Missing Codes
Output Noise
Resolution
Integral Nonlinearity (INL)
Offset Error (Unipolar, Bipolar)
Offset Drift vs. Temperature
Gain Error
Gain Drift vs. Temperature
Positive Full-Scale Error
Positive Full-Scale Drift vs. Temp.
Bipolar Negative Full-Scale Error
Common-Mode Rejection
Power Supply Sensitivity
Channel-to-Channel Isolation
Analog Input Differential Voltage
AIN Absolute Voltage
BIAS Voltage
RA, RB, RC, RD Voltage
AIN Impedance
AIN Pin Impedance
BIAS Pin Impedance
±10 V Range
0 V to +10 V Range
±5 V Range
0 V to +5 V Range
3
4
1
1, 9
1, 2
1, 2
1, 9
1, 9
1, 2, 8
1
4
4
1, 2, 3
2, 3
2, 3
1
1
4
6
DD
5
5
1
7
= 5 V ± 5%; DV
Min
372
24
50
737
24
–16.5
0
–10.5
100
87.5
12.5
DD
Typ
See Table 4
See Table 5
and Table 6
±0.0003
±0.0010
±2.5
±3
±0.0060
65
±4
110
See Table 7
See Table 8
and Table 9
±0.0015
±10
±25
±0.5
±5.3
±0.5
±4
±0.0060
55
±4
110
±10
0 to +10
±5
0 to +5
2.5
124
108.5
15.5
= 2.7 V to 3.6 V, or 5 V ± 5%; BIAS (all), REFIN(+) = 2.5 V;
Rev. A | Page 3 of 32
Max
12190
±0.0015
±0.0030
±13
±0.7
±3.2
±0.7
±10
15437
+16.5
AV
+20
DD
MCLKIN
= 6.144 MHz; unless otherwise noted.)
Unit
Hz
Bits
% of FSR
% of FSR
mV
μV/°C
%
ppm of FS/°C
% of FSR
ppm of FS/°C
% of FSR
dB
LSB
dB
Hz
Bits
% of FSR
mV
μV/°C
%
ppm of FS/°C
% of FSR
ppm of FS/°C
% of FSR
dB
LSB
dB
V
V
V
V
V
V
V
kΩ
kΩ
kΩ
16
16
Configure via Conv. Time Register
Before Calibration
Before Calibration
Before Calibration
Configure via Conv. Time Register
Before Calibration
Before Calibration
Test Conditions/Comments
FW ≥ 6 (Conversion Time ≥ 165 μs)
f
f
After Calibration
At DC
At DC, AIN = 7 V, AV
At DC, Maximum ±16.5 V AIN Voltage
FW ≥ 8 (Conversion Time ≥ 117 μs)
Before Calibration
After Calibration
At DC
At DC, AIN = 7 V, AV
At DC, Maximum ±16.5 V AIN Voltage
MCLKIN
MCLKIN
= 2.5 MHz, V
= 6.144 MHz, V
CM
DD
DD
CM
= 0 V
= 5 V ± 5%
= 5 V ± 5%
= 0 V
AD7732