AD7910ARM-REEL AD [Analog Devices], AD7910ARM-REEL Datasheet - Page 9

• Manufacturer Part Number: AD7910ARM-REEL
• Description: 250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70
• Manufacturer: AD [Analog Devices]

TPC 1 and TPC 2 show a typical FFT plot for the AD7920 and
AD7910, respectively, at a 250 kSPS sampling rate and a 100 kHz
input frequency.
TPC 3 shows the signal-to-(noise + distortion) ratio performance
versus input frequency for various supply voltages while sampling
at 250 kSPS with a SCLK frequency of 5 MHz for the AD7920.
TPC 4 and TPC 5 show typical INL and DNL performance for the
AD7920.
REV. B
TPC 1. AD7920 Dynamic Performance at 250 kSPS
TPC 2. AD7910 Dynamic Performance at 250 kSPS
–105
–115
–15
–35
–55
–75
–95
–25
–45
–65
–85
–5
–5
0
0
8192 POINT FFT
SINAD = 72.05dB
THD = –82.87dB
SFDR = –87.24dB
V
f
f
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
25
= 250kSPS
25
= 250kSPS
FREQUENCY (kHz)
FREQUENCY (kHz)
50
50
75
75
Typical Performance Characteristics–AD7910/AD7920
100
100
125
125
–9–
TPC 6 shows a graph of the total harmonic distortion versus analog
input frequency for different source impedances when using a
supply voltage of 3.6 V and sampling at a rate of 250 kSPS. See the
Analog Input section.
TPC 7 shows a graph of the total harmonic distortion versus analog
input signal frequency for various supply voltages while sampling
at 250 kSPS with an SCLK frequency of 5 MHz.
TPC 3. AD7920 SINAD vs. Input Frequency at 250 kSPS
–71.0
–71.5
–72.0
–72.5
–73.0
–73.5
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
0
10
0
V
V
V
TEMP = 25 C
f
DD
DD
SAMPLE
DD
TPC 4. AD7920 INL Performance
512
= 4.75V V
= 5.25V
= 2.35V
V
DD
= 250kSPS
= 2.35V
1024
DD
= 3.6V
1536
FREQUENCY (kHz)
CODE
2048
100
2560
V
DD
= 2.7V
3072
3584
4096
1000