Datasheet

AD7674
Rev. A | Page 4 of 28
Parameter Conditions Min Typ Max Unit
REFERENCE
External Reference Voltage Range REF 3 4.096 AVDD + 0.1 V
REF Voltage with Reference Buffer REFBUFIN = 2.5 V 4.05 4.096 4.15 V
Reference Buffer Input Voltage Range REFBUFIN 1.8 2.5 2.6 V
REFBUFIN Input Current –1 +1 μA
REF Current Drain 800 kSPS throughput 330 μA
DIGITAL INPUTS
Logic Levels
V
IL
–0.3 +0.8 V
V
IH
+2.0 DVDD + 0.3 V
I
IL
–1 +1 μA
I
IH
–1 +1 μA
DIGITAL OUTPUTS
Data Format
5
Pipeline Delay
6
V
OL
I
SINK
= 1.6 mA 0.4 V
V
OH
I
SOURCE
= –500 μA OVDD – 0.6 V
POWER SUPPLIES
Specified Performance
AVDD 4.75 5 5.25 V
DVDD 4.75 5 5.25 V
OVDD 2.7 DVDD + 0.3
7
V
Operating Current
8
800 kSPS throughput
AVDD 16 mA
DVDD
9
6.5 mA
OVDD
9
50 μA
POWER DISSIPATION
9
PDBUF high @ 500 kSPS
10
78 90 mW
PDBUF high @ 1 kSPS
10
160 μW
PDBUF high @ 800 kSPS
8
114 126 mW
PDBUF low @ 800 kSPS
8
126 138 mW
TEMPERATURE RANGE
11
Specified Performance T
MIN
to T
MAX
–40 +85 °C
1
See Analog Inputs section.
2
LSB means Least Significant Bit. With the ±4.096 V input range, 1 LSB is 31.25 μV.
3
See Definitions of Specifications section. The nominal gain error is not centered at zero and is −0.029% of FSR. This specification is the deviation from this nominal
value. These specifications do not include the error contribution from the external reference, but do include the error contribution from the reference buffer if used.
4
All specifications in dB are referred to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale unless otherwise specified.
5
Data Format Parallel or Serial 18-Bit.
6
Conversion results are available immediately after completed conversion.
7
The max should be the minimum of 5.25 V and DVDD + 0.3 V.
8
In Warp mode.
9
Tested in Parallel Reading mode.
10
In Impulse mode.
11
Contact factory for extended temperature range.