Datasheet

AD7623
Rev. 0 | Page 4 of 28
Parameter Conditions Min Typ Max Unit
EXTERNAL REFERENCE PDREF = PDBUF = high
Voltage Range REF 1.8 2.048 AVDD V
Current Drain 1.33 MSPS throughput 100 μA
REFERENCE BUFFER PDREF = high, PDBUF = low
REFBUFIN Input Voltage Range 1.05 1.2 1.30 V
TEMPERATURE PIN
Voltage Output @ 25°C 273 mV
Temperature Sensitivity 0.85 mV/°C
Output Resistance 4.7 kΩ
DIGITAL INPUTS
Logic Levels
V
IL
–0.3 +0.6 V
V
IH
1.7 5.25 V
I
IL
–1 +1 μA
I
IH
–1 +1 μA
DIGITAL OUTPUTS
Data Format
7
Pipeline Delay
8
V
OL
I
SINK
= 500 μA 0.4 V
V
OH
I
SOURCE
= –500 μA OVDD − 0.3 V
POWER SUPPLIES
Specified Performance
AVDD 2.37 2.5 2.63 V
DVDD 2.37 2.5 2.63 V
OVDD 2.30
9
3.6 V
Operating Current
10
1.33 MSPS throughput
AVDD
11
With internal reference 15 mA
DVDD 1.6 mA
OVDD 0.6 mA
Power Dissipation
10
With Internal Reference
11
1.33 MSPS throughput 50 55 mW
Without Internal Reference
11
1.33 MSPS throughput 45 53 mW
In Power-Down Mode
12
PD = high 600 μW
TEMPERATURE RANGE
13
Specified Performance T
MIN
to T
MAX
–40 +85 °C
1
When using an external reference. With the internal reference, the input range is from −0.1 V to V
REF
.
2
See the Analog Inputs section.
3
Linearity is tested using endpoints, not best fit. Tested with an external reference at 2.048 V.
4
LSB means least significant bit. With the ±2.048 V input range, 1 LSB is 62.5 μV.
5
See the Terminology section. These specifications do not include the error contribution from the external reference.
6
All specifications in dB are referred to a full-scale input FSR. Tested with an input signal at 0.5 dB below full-scale, unless otherwise specified.
7
Parallel or serial 16-bit.
8
Conversion results are available immediately after completed conversion.
9
See the Absolute Maximum Ratings section.
10
Tested in parallel reading mode.
11
With internal reference, PDREF and PDBUF are low; without internal reference, PDREF and PDBUF are high.
12
With all digital inputs forced to OVDD.
13
Consult sales for extended temperature range.