Datasheet

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