AD7476AYRM Analog Devices Inc, AD7476AYRM Datasheet - Page 12

• Manufacturer Part Number: AD7476AYRM
• Description: IC ADC 12BIT 2.35V 1MSPS 8-MSOP
• Manufacturer: Analog Devices Inc

Specifications of AD7476AYRM

• Rohs Status: RoHS non-compliant
• Design Resources: Output Channel Monitoring Using AD5380 (CN0008) AD5382 Channel Monitor Function (CN0012) AD5381 Channel Monitor Function (CN0013) AD5383 Channel Monitor Function (CN0015) AD5390/91/92 Channel Monitor Function (CN0030) Power off protected data acquisition signal chain using ADG4612 , AD711, and AD7476 (CN0165)
• Number Of Bits: 12
• Sampling Rate (per Second): 1M
• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 17.5mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• For Use With: EVAL-AD7476ACBZ - BOARD EVALUATION FOR AD7476AAD7476-DBRD - BOARD EVAL FOR AD7476AD7476A-DBRD - BOARD EVAL FOR AD7476A

AD7476A/AD7477A/AD7478A
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 7, Figure 8, and Figure 9 each show a typical FFT plot for
the AD7476A, AD7477A, and AD7478A, respectively, at a
1 MSPS sample rate and 100 kHz input frequency. Figure 10
shows the signal-to-(noise + distortion) ratio performance vs.
the input frequency for various supply voltages while sampling
at 1 MSPS with an SCLK frequency of 20 MHz for the
AD7476A.
–115
–105
–15
–35
–55
–75
–95
–25
–45
–65
–85
–5
5
0
0
Figure 7. AD7476A Dynamic Performance at 1 MSPS
Figure 8. AD7477A Dynamic Performance at 1 MSPS
50
50
100
100
150
150
FREQUENCY (kHz)
FREQUENCY (kHz)
200
200
250
250
300
300
8192 POINT FFT
V
f
f
SINAD = 72.05dB
THD = –82.87dB
SFDR = –87.24dB
350
350
8192 POINT FFT
V
f
f
SINAD = 61.67dB
THD = –79.59dB
SFDR = –82.93dB
SAMPLE
IN
SAMPLE
IN
DD
DD
= 100kHz
= 100kHz
= 2.7V
= 2.35V
400
400
= 1MSPS
= 1MSPS
450
450
500
500
Rev. F | Page 12 of 28
Figure 11 and Figure 12 show INL and DNL performance for
the AD7476A. Figure 13 shows a graph of the total harmonic
distortion vs. the analog input frequency for different source
impedances when using a supply voltage of 3.6 V and sampling
at a rate of 1 MSPS (see the Analog Input section). Figure 14
shows a graph of the total harmonic distortion vs. the analog
input signal frequency for various supply voltages while
sampling at 1 MSPS with an SCLK frequency of 20 MHz.
–15
–25
–35
–45
–55
–65
–75
–85
–95
–66
–67
–68
–69
–70
–71
–72
–73
–74
–5
Figure 10. AD7476A SINAD vs. Input Frequency at 1 MSPS
5
10
0
Figure 9. AD7478A Dynamic Performance at 1 MSPS
50
100
150
FREQUENCY (kHz)
FREQUENCY (kHz)
200
V
DD
250
V
= 5.25V
100
DD
= 2.35V
V
300
DD
= 2.7V
350
V
8192 POINT FFT
SINAD = 49.77dB
THD = –75.51dB
SFDR = –70.71dB
V
f
f
SAMPLE
IN
DD
DD
= 100kHz
= 3.6V
= 2.35V
400
V
DD
= 1MSPS
= 4.75V
450
1000
500