Datasheet

AD7763 Data Sheet
Rev. B | Page 4 of 32
Parameter Test Conditions/Comments Specification Unit
REFERENCE INPUT
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 ±1 µA max
V
REF
Input Capacitance
5
pF max
POWER DISSIPATION
Total Power Dissipation Normal power mode 955.5 mW max
Low power mode
651
mW max
Standby Mode Clock stopped 6.35 mW typ
POWER REQUIREMENTS
AV
DD1
(Modulator Supply)
±5%
+2.5
V
AV
DD2
(General Supply) ±5% +5 V
AV
DD3
(Differential Amplifier Supply) +3.15/+5.25 V min/max
AV
DD4
(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
DD1
(Modulator) 49/52 mA typ/max
AI
DD2
(General) 40/43 mA typ/max
AI
DD4
(Reference Buffer) AV
DD4
= 5 V 35/37 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 10/11 mA typ/max
AI
DD3
(Diff Amp) AV
DD3
= 5 V, both modes 41/45 mA typ/max
DI
DD
Both modes 56/62 mA typ/max
DIGITAL I/O
MCLK Input Amplitude
3
5 V typ
Input Capacitance 7.3 pF typ
Input Leakage Current ±1 μA/pin max
Three-State Leakage Current (SDO) ±1 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
0.1 V max
1
See the Terminology section.
2
SNR specifications in dB are referred to a full-scale input, FS, and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
3
While the AD7763 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.