AD7765 Analog Devices, AD7765 Datasheet - Page 5

• 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

Parameter
POWER DISSIPATION
1
2
3
4
5
6
See Terminology section.
SNR specifications in decibels are referred to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
Output data rate (ODR) = [(MCLK/2)]/decimation rate. That is, the maximum ODR for AD7765 = [(40 MHz/2)/128] = 156.25 kHz.
Tested with a 400 µA load current.
Tested at MCLK = 40 MHz. This current scales linearly with the MCLK frequency applied.
Tested at 125°C.
Normal Power Mode
Low Power Mode
Normal Power Mode
Low Power Mode
Power-Down Mode
AI
AI
AI
AI
DI
AI
AI
AI
AI
DI
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
1 (Modulator)
2 (General)
3 (Differential Amplifier)
4 (Reference Buffer)
1 (Modulator)
2 (General)
3 (Differential Amplifier)
4 (Reference Buffer)
5
5
5
5
6
Test Conditions/Comments
MCLK = 40 MHz
AV
AV
MCLK = 40 MHz
MCLK = 40 MHz
AV
AV
MCLK = 40 MHz
MCLK = 40 MHz, decimate 128×
MCLK = 40 MHz, decimate 128×
PWRDWN
DD
DD
DD
DD
3 = 5 V
4 = 5 V
3 = 5 V
4 = 5 V
held logic low
Rev. A | Page 5 of 32
Specification
19
13
10
9
37
10
7
5.5
5
20
300
371
160
215
1
Unit
mA typ
mA typ
mA typ
mA typ
mA typ
mA typ
mA typ
mA typ
mA typ
mA typ
mW typ
mW max
mW typ
mW max
mW typ
AD7765