AD7450ARMZ View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD7450ARMZ Datasheet PDF : 22 Pages
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AD7450
Parameter
CONVERSION RATE
Conversion Time
Track-and-Hold
Acquisition Time3, 8
Throughput Rate9
POWER REQUIREMENTS
VDD
IDD10, 11
Normal Mode (Static)
Normal Mode (Operational)
Full Power-Down Mode
Power Dissipation
Normal Mode (Operational)
Full Power-Down Mode
Conditions/Comments
888 ns with an 18 MHz SCLK
1.07 µs with a 15 MHz SCLK
Sine Wave Input
VDD = 5 V
VDD = 3 V
Range: 3 V ± 10%; 5 V ± 5%
VDD = 3 V/5 V SCLK; ON or OFF
VDD = 5 V; fSAMPLE = 1 MSPS
VDD = 3 V; fSAMPLE = 833 kSPS
SCLK ON or OFF
VDD = 5 V; fSAMPLE = 1 MSPS;
1.38 mW typ for 100 KSPS10
VDD = 3 V; fSAMPLE = 833 kSPS;
0.53 mW typ for 100 KSPS10
VDD = 5 V; SCLK ON or OFF
VDD = 3 V; SCLK ON or OFF
A Version
16
200
1
833
3/5
0.5
1.8
1.25
1
9
3.75
5
3
B Version
16
200
1
833
3/5
0.5
1.8
1.25
1
9
3.75
5
3
Unit
SCLK Cycles
ns max
MSPS max
kSPS max
V min/max
mA typ
mA max
mA max
µA max
mW max
mW max
µW max
µW max
NOTES
1Temperature range is as follows: A and B Versions: –40°C to +85°C.
2Common-mode voltage. The input signal can be centered on any choice of dc common-mode voltage as long as this value is in the range specified in Figures 8 and 9.
3See Terminology section.
4A 200 mV p-p sine wave, varying in frequency from 1 kHz to 200 kHz is coupled onto VDD. A 2.2 nF capacitor is used to decouple VDD to GND.
5If the input spans of VIN+ and VIN– are both VREF, and they are 180° out of phase, the differential voltage is 2 ϫ VREF.
6The AD7450 is functional with a reference input from 100 mV and for V DD = 5 V, the reference can range up to 3.5 V (see References section).
7The AD7450 is functional with a reference input from 100 mV and for V DD = 3 V, the reference can range up to 2.2 V (see References section).
8Sample tested @ 25°C to ensure compliance.
9See Serial Interface section.
10See Power Versus Throughput Rate section.
11Measured with a midscale dc input.
Rev. A
–3–
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