AD7452 Analog Devices, AD7452 Datasheet - Page 4

• Manufacturer Part Number: AD7452
• Description: Differential Input, 555 kSPS, 12-Bit A/D Converter in 8-Lead SOT-23
• Manufacturer: Analog Devices

Specifications of AD7452

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 555kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: SOT

AD7452
Parameter
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
4
5
6
7
8
9
10
Common-mode voltage. The input signal can be centered on a dc common-mode voltage in the range specified in
Temperature ranges as follows: B Version: –40°C to +85°C.
See
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.
Because the input spans of V
The AD7452 is functional with a reference input from 100 mV; for V
The AD7452 is functional with a reference input from 100 mV; for V
Guaranteed by characterization.
See
Measured with a midscale dc input.
Conversion Time
Track-and-Hold Acquisition Time
Throughput Rate
V
I
Power Dissipation
DD
DD
Terminology
Power vs. Throughput Rate
9, 10
Normal Mode (Static)
Normal Mode (Operational)
Full Power-Down Mode
Normal Mode (Operational)
Full Power-Down
section.
IN+
and V
section.
IN–
are both V
3
REF
and are 180° out of phase, the differential voltage is 2 × V
Test Conditions/Comments
1.6 µs with a 10 MHz SCLK
Sine wave input
Step input
Range: 3 V + 20%/–10%;
5 V ± 5%
SCLK on or off
V
V
SCLK on or off
V
V
V
V
DD
DD
DD
DD
DD
DD
= 4.75 V to 5.25 V
= 2.7 V to 3.6 V
= 5 V, 1.55 mW typ for 100 kSPS
= 3 V, 0.64 mW typ for 100 kSPS
= 5 V, SCLK on or off
= 3 V, SCLK on or off
DD
DD
= 5 V, the reference can range up to 3.5 V.
= 3 V, the reference can range up to 2.2 V.
Rev. B | Page 4 of 28
9
9
REF.
Figure 23
B Version
16
200
290
555
2.7/5.25
0.5
1.5
1.2
1
7.25
3.3
5
3
and
Figure 24
2
.
Unit
SCLK cycles
ns max
ns max
kSPS max
V min/V max
mA typ
mA max
mA max
µA max
mW max
mW max
µW max
µW max