AD7453 Analog Devices, AD7453 Datasheet - Page 9

• Manufacturer Part Number: AD7453
• Description: Pseudo Differential, 555 kSPS, 12-Bit A/D Converter in 8-Lead SOT-23
• Manufacturer: Analog Devices

Specifications of AD7453

• 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

AD7453–TYPICAL PERFORMANCE CHARACTERISTICS
Default Conditions: T
Figure 5. SINAD vs. Analog Input Frequency for Various Supply Voltages
Figure 6. PSRR vs. Supply Ripple Frequency without Supply Decoupling
–100
–120
–140
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
75
70
65
60
55
0
10
0
0
0
100mV p-p SINE WAVE ON V
NO DECOUPLING ON V
Figure 7. Dynamic Performance for V
100
200
SUPPLY RIPPLE FREQUENCY (kHz)
A
300
= 25°C, f
100
V
FREQUENCY (kHz)
DD
FREQUENCY (kHz)
400
V
DD
= 4.75V
DD
= 3V
S
500
= 555 kSPS, f
V
DD
DD
V
DD
= 5V
600
= 3.6V
V
DD
200
8192 POINT FFT
f
f
SINAD = 71.7dB
THD = –82dB
SFDR = –83dB
100
SAMPLE
IN
700
= 2.7V
= 100kSPS
DD
SCLK
= 5 V
800
V
= 555kSPS
DD
= 10 MHz, V
= 5.25V
900 1000
277
277
Rev. B | Page 9 of 20
DD
= 2.7 V to 5.25 V, V
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
–0.2
–0.4
–0.6
–0.8
–1.0
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
0
2046
Figure 10. Histogram of 10,000 Conversions of a DC Input
0
0
0
0
REF
Figure 8. Typical DNL for the AD7453 for V
Figure 9. Typical INL for the AD7453 for V
= 2.5 V, unless otherwise noted.
2047
27 CODES
1024
1024
2048
CODES
CODES
9949
CODE
CODE
2048
2048
2049
24 CODES
3072
3072
DD
DD
2050
= 5 V
= 5 V
AD7453
2051
4096
4096