AD7691 Analog Devices, AD7691 Datasheet - Page 4

• Manufacturer Part Number: AD7691
• Manufacturer: Analog Devices

Specifications of AD7691

• Resolution (bits): 18bit
• # Chan: 1
• Sample Rate: 250kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP,SOP

AD7691
VDD = 2.3 V to 5.25 V, VIO = 2.3 V to VDD, V
Table 3.
Parameter
REFERENCE
SAMPLING DYNAMICS
DIGITAL INPUTS
DIGITAL OUTPUTS
POWER SUPPLIES
TEMPERATURE RANGE
1
2
3
4
Conversion results are available immediately after completed conversion.
With all digital inputs forced to VIO or GND as required.
During acquisition phase.
Contact an Analog Devices, Inc., sales representative for the extended temperature range.
Voltage Range
Load Current
−3 dB Input Bandwidth
Aperture Delay
Logic Levels
Data Format
Pipeline Delay
VDD
VIO
VIO Range
Standby Current
Power Dissipation
Energy per Conversion
Specified Performance
V
V
I
I
V
V
IL
IH
IL
IH
OL
OH
1
2, 3
4
Conditions/Comments
250 kSPS, REF = 5 V
VDD = 5 V
Serial 18-bit, twos complement
I
I
Specified performance
Specified performance
VDD and VIO = 5 V, T
VDD = 2.5 V, 100 SPS throughput
VDD = 2.5 V, 100 kSPS throughput
VDD = 2.5 V, 180 kSPS throughput
VDD = 5 V, 100 kSPS throughput
VDD = 5 V, 250 kSPS throughput
T
SINK
SOURCE
MIN
= +500 μA
to T
= −500 μA
MAX
REF
= VDD, all specifications T
A
= 25°C
Rev. B | Page 4 of 28
Min
0.5
−0.3
0.7 × VIO
−1
−1
VIO − 0.3
2.3
2.3
1.8
−40
MIN
to T
MAX
, unless otherwise noted.
Typ
60
2
2.5
1
1.4
1.35
2.4
4.24
10.6
50
Max
VDD + 0.3
+0.3 × VIO
VIO + 0.3
+1
+1
0.4
5.25
VDD + 0.3
VDD + 0.3
50
5
12.5
+85
Unit
V
μA
MHz
ns
V
V
μA
μA
V
V
V
V
V
nA
μW
mW
mW
mW
mW
nJ/sample
°C