AD7623
Parameter
EXTERNAL REFERENCE
Voltage Range
Current Drain
REFERENCE BUFFER
REFBUFIN Input Voltage Range
TEMPERATURE PIN
Voltage Output
Temperature Sensitivity
Output Resistance
DIGITAL INPUTS
Logic Levels
VIL
VIH
IIL
IIH
DIGITAL OUTPUTS
Data Format7
Pipeline Delay8
VOL
VOH
POWER SUPPLIES
Specified Performance
AVDD
DVDD
OVDD
Operating Current10
AVDD11
DVDD
OVDD
Power Dissipation10
With Internal Reference11
Without Internal Reference11
In Power-Down Mode12
TEMPERATURE RANGE13
Specified Performance
Conditions
Min
PDREF = PDBUF = high
REF
1.8
1.33 MSPS throughput
PDREF = high, PDBUF = low
1.05
@ 25°C
–0.3
1.7
–1
–1
Typ
2.048
100
1.2
273
0.85
4.7
Max
AVDD
1.30
+0.6
5.25
+1
+1
ISINK = 500 μA
ISOURCE = –500 μA
1.33 MSPS throughput
With internal reference
1.33 MSPS throughput
1.33 MSPS throughput
PD = high
TMIN to TMAX
0.4
OVDD − 0.3
2.37
2.37
2.309
–40
2.5
2.63
2.5
2.63
3.6
15
1.6
0.6
50
55
45
53
600
+85
1 When using an external reference. With the internal reference, the input range is from −0.1 V to VREF.
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.
Unit
V
μA
V
mV
mV/°C
kΩ
V
V
μA
μA
V
V
V
V
V
mA
mA
mA
mW
mW
μW
°C
Rev. 0 | Page 4 of 28