Datasheet

AD7767
Rev. C | Page 4 of 24
Parameter Test Conditions/Comments Min Typ Max Unit
DIGITAL FILTER RESPONSE
1
Group Delay 37/ODR µs
Settling Time (Latency) Complete settling 74/ODR µs
Pass-Band Ripple ±0.005 dB
Pass Band 0.453 × ODR Hz
−3 dB Bandwidth 0.49 × ODR Hz
Stop-Band Frequency 0.547 × ODR Hz
Stop-Band Attenuation 100 dB
REFERENCE INPUT
1
V
REF+
Input Voltage 2.4 2 × AV
DD
V
DIGITAL INPUTS (Logic Levels)
1
V
IL
−0.3 +0.3 × V
DRIVE
V
V
IH
0.7 × V
DRIVE
V
DRIVE
+ 0.3 V
Input Leakage Current ±1 A/pin
Input Capacitance 5 pF
Master Clock Rate 1.024 MHz
Serial Clock Rate 1/t
8
Hz
DIGITAL OUTPUTS
1
Data Format
Serial 24 bits, twos complement (MSB
first)
V
OL
I
SINK
= +500 A 0.4 V
V
OH
I
SOURCE
= −500 µA V
DRIVE
– 0.3 V
POWER REQUIREMENTS
1
AV
DD
± 5% 2.5 V
DV
DD
± 5% 2.5 V
V
DRIVE
1.7 2.5 3.6 V
CURRENT SPECIFICATIONS MCLK = 1.024 MHz
AD7767 Operational Current 128 kHz output data rate
AI
DD
1.3 1.5 mA
DI
DD
3.9 4.8 mA
I
REF
0.35 0.425 mA
AD7767-1 Operational Current 64 kHz output data rate
AI
DD
1.3 1.5 mA
DI
DD
2.2 2.85 mA
I
REF
0.35 0.425 mA
AD7767-2 Operational Current 32 kHz output data rate
AI
DD
1.3 1.5 mA
DI
DD
1.37 1.86 mA
I
REF
0.35 0.425 mA
Static Current with MCLK Stopped For all devices
AI
DD
0.9 1 mA
DI
DD
1 93 A
Power-Down Mode Current For all devices
AI
DD
0.1 6 A
DI
DD
1 93 A
POWER DISSIPATION MCLK = 1.024 MHz
AD7767 Operational Power 128 kHz output data rate 15 18 mW
AD7767-1 Operational Power 64 kHz output data rate 10.5 13 mW
AD7767-2 Operational Power 32 kHz output data rate 8.5 10.5 mW
1
Specifications are for all devices, AD7767, AD7767-1, and AD7767-2.
2
See the Terminology section.