AD7706 Analog Devices, AD7706 Datasheet - Page 5

• Manufacturer Part Number: AD7706
• Description: 3V/5V, 1mW, 3-Channel Pseudo Differential, 16-Bit Sigma-Delta ADC
• Manufacturer: Analog Devices

Specifications of AD7706

• Resolution (bits): 16bit
• # Chan: 3
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: Bip (Vref)/(PGA Gain),Uni (Vref)/(PGA Gain)
• Adc Architecture: Sigma-Delta
• Pkg Type: DIP,SOIC,SOP

SPECIFICATIONS
V
otherwise noted. All specifications T
Table 1.
Parameter
STATIC PERFORMANCE
ANALOG INPUTS/REFERENCE INPUTS
DD
No Missing Codes
Output Noise
Integral Nonlinearity
Unipolar Offset Error
Unipolar Offset Drift
Bipolar Zero Error
Bipolar Zero Drift
Positive Full-Scale Error
Full-Scale Drift
Gain Error
Gain Drift
Bipolar Negative Full-Scale Error
Bipolar Negative Full-Scale Drift
Common-Mode Rejection (CMR)
Normal-Mode 50 Hz Rejection
Normal-Mode 60 Hz Rejection
Common-Mode 50 Hz Rejection
Common-Mode 60 Hz Rejection
Absolute/Common-Mode REF IN
Absolute/Common-Mode AIN
Absolute/Common-Mode AIN
AIN DC Input Current
AIN Sampling Capacitance
AIN Differential Voltage Range
= 3 V or 5 V, REF IN(+) = 1.225 V with V
V
V
Voltage
Voltage
Voltage
DD
DD
Gain = 1
Gain = 2
Gain = 4
Gain = 8 to 128
Gain = 1
Gain = 2
Gain = 4
Gain = 8 to 128
= 5 V
= 3 V
4, 8
3, 7
2
2, 9, 10
2, 9
4, 6
4
3
4
3
2
2
3, 5
2
2
2
11
4
2
2
2
2
MIN
to T
B Version
16
See Table 5 and
Table 7
±0.003
0.5
0.5
0.1
0.5
0.5
±0.003
1
0.6
96
105
110
130
105
110
120
130
98
98
150
150
GND to V
GND − 100 mV
V
GND + 50 mV
V
1
10
0 to +V
±V
DD
DD
REF
MAX
+ 30 mV
− 1.5 V
DD
/gain
, unless otherwise noted.
REF
= 3 V, and 2.5 V with V
DD
/gain
1
12
Rev. C | Page 5 of 44
Unit
Bits min
% of FSR max
μV/°C typ
μV/°C typ
μV/°C typ
μV/°C typ
ppm of FSR/°C
typ
% of FSR typ
μV/°C typ
μV/°C typ
dB typ
dB typ
dB typ
dB typ
dB typ
dB typ
dB typ
dB typ
dB typ
dB typ
dB typ
dB typ
V min to V max
V min
V max
V min
V max
nA max
pF max
nom
nom
DD
= 5 V; REF IN(−) = GND; MCLK IN = 2.4576 MHz, unless
Conditions/Comments
Guaranteed by design, filter notch < 60 Hz
Depends on filter cutoffs and selected gain
Filter notch < 60 Hz, typically ±0.0003%
For gains 1, 2, and 4
For gains 8, 16, 32, 64, and 128
Typically ±0.001%
For gains of 1 to 4
For gains of 8 to 128
Specifications for AIN and REF IN, unless otherwise
noted
For filter notches of 25 Hz, 50 Hz, ±0.02 × f
For filter notches of 20 Hz, 60 Hz, ±0.02 × f
For filter notches of 25 Hz, 50 Hz, ±0.02 × f
For filter notches of 20 Hz, 60 Hz, ±0.02 × f
BUF bit of setup register = 0
BUF bit of setup register = 1
Unipolar input range (B/U bit of setup register = 1)
Bipolar input range (B/U bit of setup register = 0)
AD7705/AD7706
NOTCH
NOTCH
NOTCH
NOTCH