Datasheet

AD7762 Data Sheet
Rev. A | Page 4 of 28
Parameter Test Conditions/Comments Specification Unit
REFERENCE INPUT/OUTPUT
V
REF
Input Voltage V
DD3
= 3.3 V ± 5% +2.5 V max
V
DD3
= 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
DD1
(Modulator Supply)
±5%
+2.5
V
AV
DD2
(General Supply) ±5% +5 V
AV
DD3
(Diff Amp Supply) +3.15/+5.25 V min/max
AV
DD4
(Ref 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
DD1
(Modulator) 49/51 mA typ/max
AI
DD2
(General) 40/42 mA typ/max
AI
DD4
(Reference Buffer) AV
DD4
= 5 V 34/36 mA typ/max
Low Power Mode
AI
DD1
(Modulator)
26/28
mA typ/max
AI
DD2
(General) 20/23 mA typ/max
AI
DD4
(Reference Buffer) AV
DD4
= 5 V 9/10 mA typ/max
AI
DD3
(Diff Amp) AV
DD3
= 5 V, both modes 41/44 mA typ/max
DI
DD
Both modes 63/70 mA typ/max
DIGITAL I/O
MCLK Input Amplitude
3
5 V typ
Input Capacitance 7.3 pF typ
Input Leakage Current ±5 μA max
Three-State Leakage Current (D15:D0) ±5 μA max
V
INH
0.7 × V
DRIVE
V min
V
INL
0.3 × V
DRIVE
V max
V
OH
4
1.5 V min
V
OL
4
0.1
V max
1
See the Terminology section.
2
SNR specifications in dBs are referred to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
3
While the AD7762 can function with an MCLK amplitude of less than 5 V, this is the recommended amplitude to achieve the performance as stated.
4
Tested with a 400 µA load current.