AD7764 Analog Devices, AD7764 Datasheet - Page 5

• Manufacturer Part Number: AD7764
• Description: 24-Bit, 312 kSPS, 109 dB Sigma Delta ADC with On-Chip Buffers and Serial Interface
• Manufacturer: Analog Devices

Specifications of AD7764

• 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
REFERENCE INPUT/OUTPUT
DIGITAL INPUT/OUTPUT
ON-CHIP DIFFERENTIAL AMPLIFIER
POWER REQUIREMENTS
POWER DISSIPATION
1
2
3
4
5
6
See the 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 AD7764 = [(40 MHz)/2)/64] = 312.5 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.
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
Normal Power Mode
Low Power Mode
Normal Power Mode
Low Power Mode
Power-Down Mode
REF+
REF+
REF+
Input Capacitance
Input Leakage Current
V
V
V
V
AI
AI
AI
AI
AI
DI
AI
AI
AI
DI
DD
DD
DD
DD
DD
INH
INL
OH
OL
DD
DD
1 (Modulator Supply)
2 (General Supply)
3 (Differential Amplifier Supply)
4 (Ref Buffer Supply)
DD
DD
DD
DD
DD
DD
DD
DD
Input Voltage
Input DC Leakage Current
Input Capacitance
4
1 (Modulator)
1 (Modulator)
2 (General)
3 (Differential Amplifier)
4 (Reference Buffer)
2 (General)
3 (Differential Amplifier)
4 (Reference Buffer)
5
5
5
5
6
Test Conditions/Comments
AV
Voltage range at input pins: V
On-chip differential amplifier pins: V
±5%
±5%
±5%
±5%
±5%
MCLK = 40 MHz
AV
AV
MCLK = 40 MHz
MCLK = 40 MHz
AV
AV
MCLK = 40 MHz
MCLK = 40 MHz, decimate 64×
MCLK = 40 MHz, decimate 64×
PWRDWN
DD
DD
DD
DD
DD
3 = 5 V ± 5%
3 = 5 V
4 = 5 V
3 = 5 V
4 = 5 V
held logic low
Rev. A | Page 5 of 32
IN
A+ and V
OUT
A+ and V
IN
A−
OUT
A−
Specification
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
19
13
10
9
37
10
7
5.5
5
20
300
371
160
215
1
DD
DD
Unit
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
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
AD7764