AD7765 Analog Devices, AD7765 Datasheet - Page 4

• Manufacturer Part Number: AD7765
• Description: 24-Bit, 156 kSPS, 112 dB Sigma-Delta ADC with On-Chip Buffers and Serial Interface
• Manufacturer: Analog Devices

Specifications of AD7765

• Resolution (bits): 24bit
• # Chan: 1
• Sample Rate: 40MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: 6.5 V p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

AD7765
Parameter
DC ACCURACY
DIGITAL FILTER CHARACTERISTICS
ANALOG INPUT
REFERENCE INPUT/OUTPUT
DIGITAL INPUT/OUTPUT
ON-CHIP DIFFERENTIAL AMPLIFIER
POWER REQUIREMENTS
Resolution
Integral Nonlinearity
Zero Error
Gain Error
Zero Error Drift
Gain Error Drift
Pass-Band Ripple
Pass Band
−3 dB Bandwidth
Stop Band
Stop-Band Attenuation
Group Delay
Differential Input Voltage
Input Capacitance
V
V
V
MCLK Input Amplitude
Input Impedance
Bandwidth for 0.1 dB Flatness
Common-Mode Input Voltage
Common-Mode Output Voltage
AV
AV
AV
AV
DV
REF+
REF+
REF+
Input Capacitance
Input Leakage Current
V
V
V
V
Decimate 128×
Decimate 256×
DD
DD
DD
DD
DD
INH
INL
OH
OL
1 (Modulator Supply)
2 (General Supply)
3 (Differential Amplifier Supply)
4 (Reference Buffer Supply)
Input Voltage
Input DC Leakage Current
Input Capacitance
4
3
3
3
Test Conditions/Comments
Guaranteed monotonic to 24 bits
Normal power mode
Low power mode
Normal power mode
Including on-chip amplifier
Low power mode
Including on-chip amplifier
−1 dB frequency
Beginning of stop band
Decimate 128×
Decimate 256×
MCLK = 40 MHz
MCLK = 40 MHz
Modulator input pins: V
At on-chip differential amplifier inputs
At modulator inputs
AV
Voltage range at input pins: V
On-chip differential amplifier pins: V
±5%
±5%
±5%
±5%
±5%
DD
3 = 5 V ± 5%
Rev. A | Page 4 of 32
IN
+ − V
IN
IN
A− and V
−, V
REF
OUT
+ = 4.096 V
A+ and V
IN
A+
OUT
A−
Specification
24
0.0036
0.0014
0.006
0.03
0.04
0.002
0.024
0.018
0.04
0.00006
0.00005
0.1
ODR × 0.4016
ODR × 0.4096
ODR × 0.5
120
115
177
358
±3.2768
5
29
4.096
±1
5
2.25 to 5.25
7.3
±1
0.8 × DV
0.2 × DV
2.2
0.1
>1
125
−0.5 to +2.2
2.048
2.5
5
5
5
2.5
DD
DD
Unit
Bits
% typ
% typ
% typ
% max
% typ
% typ
% max
% typ
% typ
%FS/°C typ
%FS/°C typ
dB typ
kHz
kHz
kHz
dB typ
µs typ
µs typ
V p-p
pF typ
pF typ
V
µA max
pF typ
V
pF typ
μA/pin max
V min
V max
V min
V max
MΩ
kHz
V
V
V
V
V min/max
V min/max
V