AD7760 Analog Devices, AD7760 Datasheet - Page 5

• Manufacturer Part Number: AD7760
• Description: 2.5 MSPS, 24-Bit, 100 dB Sigma-Delta ADC with On-Chip Buffer
• Manufacturer: Analog Devices

Specifications of AD7760

• Resolution (bits): 24bit
• # Chan: 1
• Sample Rate: 40MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 4 V p-p,6.5 V p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: QFP

Parameter
ANALOG INPUT
REFERENCE INPUT/OUTPUT
POWER DISSIPATION
POWER REQUIREMENTS
DIGITAL I/O
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.
Current scales with ICLK frequency. See the Typical Performance Characteristics section.
Although the AD7760 can function with an MCLK amplitude of less than 5 V, this is the recommended amplitude to achieve the performance as stated.
Tested using the minimum V
Tested using V
Differential Input Voltage
Input Capacitance
V
V
V
Total Power Dissipation
Standby Mode
AV
AV
AV
AV
DV
V
Normal Mode
Low Power Mode
MCLK Input Amplitude
Input Capacitance
Input Leakage Current
Three-State Leakage Current (D15:D0)
V
V
V
V
V
REF
REF
REF
DRIVE
INH
INL
OH
OH
OL
AI
AI
AI
AI
AI
AI
AI
DI
DD
DD
DD
DD
DD
4
5
6
Input Voltage
Input DC Leakage Current
Input Capacitance
1 (Modulator Supply)
2 (General Supply)
3 (Differential Amplifier Supply)
4 (Reference Buffer Supply)
DD
DD
DD
DD
DD
DD
DD
DD
1 (Modulator)
2 (General)
4 (Reference Buffer)
1 (Modulator)
2 (General)
4 (Reference Buffer)
3 (Differential Amplifier)
DRIVE
= 2.5 V with a 400 μA load current.
3
3
DRIVE
4
voltage of 1.65 V with a 400 μA load current.
Test Conditions/Comments
V
V
At internal buffer inputs
At modulator inputs
V
V
Normal mode
Low power mode
Clock stopped
±5%
±5%
±5%
AV
AV
AV
Both modes
IN
IN
DD
DD
(+) – V
(+) – V
DD
DD
DD
3 = 3.3 V ± 5%
3 = 5 V ± 5%
4 = 5 V
4 = 5 V
3 = 5 V, both modes
IN
IN
(−), V
(−), V
Rev. A | Page 5 of 36
REF
REF
= 2.5 V
= 4.096 V
Specification
±3.25
55
+2.5
+3.15/+5.25
+3.15/+5.25
34/36
9/10
41/44
63/70
±5
±5
±2
5
+4.096
±6
5
958
661
6.35
+2.5
+5
+2.5
+1.65/+2.7
49/51
40/42
26/28
20/23
5
7.3
0.7 × V
0.3 × V
1.5
2.4
0.1
DRIVE
DRIVE
Unit
V p-p
V p-p
pF typ
pF typ
V max
V max
μA max
pF max
mW max
mW max
mW max
V
V
V min/max
V min/max
V
V min/max
mA typ/max
mA typ/max
mA typ/max
mA typ/max
mA typ/max
mA typ/max
mA typ/max
mA typ/max
V typ
pF typ
μA max
μA max
V min
V max
V min
V typ
V max
AD7760