AD7457 Analog Devices, AD7457 Datasheet - Page 4

• Manufacturer Part Number: AD7457
• Description: Pseudo Differential Input, 100 kSPS, 12-Bit ADC in 8-Lead SOT-23
• Manufacturer: Analog Devices

Specifications of AD7457

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 100kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (Vref) p-p
• Adc Architecture: SAR
• Pkg Type: SOT

AD7457
Parameter
POWER REQUIREMENTS
1
2
3
4
5
6
7
8
Temperature range for B version: −40°C to +85°C.
See the
Analog inputs with slew rates exceeding 27 V/µs (full-scale input sine wave > 3.5 MHz) within the acquisition time may cause an incorrect result to be returned by the
converter.
A dc input is applied to V
The AD7457 is functional with a reference input range of 100 mV to V
Guaranteed by characterization.
See the
Measured with a full-scale dc input.
V
I
Power Dissipation
DD
DD
Power-Down
7, 8
During Conversion
Normal Mode (Static)
Normal Mode (Operational)
Normal Mode (Operational)
Power-Down
Terminology
Power Consumption
section.
IN–
6
to provide a pseudo ground for V
section.
IN+
Test Conditions/Comments
V
V
SCLK on or off
V
V
SCLK on or off
V
V
V
V
.
DD
DD
DD
DD
DD
DD
DD
DD
= 2.7 V to 3.6 V
= 4.75 V to 5.25 V
= 2.7 V to 3.6 V
= 4.75 V to 5.25 V
= 5 V
= 3 V
= 5 V; SCLK on or off
= 3 V; SCLK on or off
DD
.
Rev. A | Page 4 of 20
B Version
2.7/5.25
1.5
1.2
0.5
0.7
0.33
1
3
0.9
5
3
1
Unit
V min/max
mA max
mA max
mA typ
mA max
mA max
µA max
mW max
mW max
µW max
µW max