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AD7492ARUZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25
AD7492
Rev. A | Page 9 of 24
Pin Mnemonic Function
20 DV
DD
Digital Supply Voltage, 2.7 V to 5.25 V. This is the supply voltage for all digital circuitry on the AD7492 apart
from the output drivers and input circuitry. The DV
DD
and AV
DD
voltages should ideally be at the same
potential and must not be more than 0.3 V apart even on a transient basis. This supply should be decoupled
to DGND.
21 V
DRIVE
Supply Voltage for the Output Drivers and Digital Input Circuitry, 2.7 V to 5.25 V. This voltage determines the
output high voltage for the data output pins and the trigger levels for the digital inputs. It allows the AV
DD
and DV
DD
to operate at 5 V (and maximize the dynamic performance of the ADC) while the digital input and
output pins can interface to 3 V logic.
AD7492
Rev. A | Page 10 of 24
TYPICAL PEFORMANCE CHARACTERISTICS
INPUT FREQUENCY (kHz)
60
0
SNR+D (dB)
61
62
63
64
65
66
67
68
69
70
71
3V
5V
500 1000 1500 2000 2500
01128-004
Figure 4. Typical SNR + D vs. Input Tone
50
THD (dB)
55
60
65
70
75
80
85
90
95
3V
5V
INPUT FREQUENCY (kHz)
100 200 350 500 1000 2000
0
1128-005
Figure 5. Typical THD vs. Input Tone
SUPPLY (Volts)
69.0
SNR (dB)
69.2
69.4
69.6
69.8
70.0
70.2
70.4
70.60
–40°C
+25°C
–55°C
+125°C
+85°C
2.50 3.0 3.5 4.0 4.5 5.0 5.5
0
1128-006
Figure 6. Typical SNR vs. Supply
–120
(dB)
–100
–80
–60
–40
–20
0
FREQUENCY (Hz)
0 100000 200000 300000 400000 500000 600000
01128-007
Figure 7. Typical SNR @ 500 kHz Input Tone
FREQUENCY (Hz)
–3.5
(dB)
–3.0
–2.5
–2.0
–1.5
–1.0
–0.5
0
5V
1 10 100 1000 10000 100000
0
1128-008
Figure 8. Typical Bandwidth
PSSR (dB)
–120
–100
–80
–60
–40
–20
0
V
CC
= 5V
100mV p-p SINEWAVE ON V
CC
f
SAMPLE
= 1MHz,
f
IN
= 100kHz
V
CC
RIPPLE FREQUENCY (kHz)
0 5 10 16 20 26 31 36 41 46 51 57 61 67 72 77 82 88 92 97
3 8 13 18 23 28 34 39 44 49 54 59 64 69 74 80 84 89 94 100
01128-009
Figure 9. Typical Power Supply Rejection Ratio (PSRR)
AD7492
Rev. A | Page 11 of 24
CODE
1.0
0
–1.0
0
4089
–0.8
357830672556204515341023
512
–0.6
–0.4
–0.2
0.2
0.4
0.6
0.8
01128-010
(INL)
Figure 10. Typical INL for 2.75 V @ 25°C
CODE
1.0
0
–1.0
0
4089
–0.8
357830672556204515341023
512
–0.6
–0.4
–0.2
0.2
0.4
0.6
0.8
01128-011
(DNL)
Figure 11. Typical DNL for 2.75 V @ 25°C
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25

AD7492ARUZ

Mfr. #:
Buy AD7492ARUZ
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 1MSPS 4mW Int Ref & Clk 12B Parallel
Lifecycle:
New from this manufacturer.
Delivery:
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