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AD7694BRMZ
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P17
Data Sheet
AD7694
TYPICAL PE
RFORMA
NCE
CHARACT
ERISTI
CS
4
–4
–3
–2
–1
0
1
2
3
0
32768
16384
49152
65536
05003-005
CODE
INL (LSB)
POSITIVE INL = +0.68 LSB
NEGATIVE INL = –1.14 LSB
Figure
5
. Integral Nonlin
earity
vs. Code
12000
10000
8000
6000
4000
2000
0
24E0
24E1
24E2
24E3
24E4
24E5
24E6
24E7
24E8
05003-006
CODE IN HEX
COUNTS
0
0
1
0
0
12500
10003
0
108568
VDD = REF = 5V
Figure
6
. Histogram of a DC Input at th
e Code Center
0
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
20
40
60
80
100
120
05003-007
FREQUENCY (kHz)
AMPLITUDE (dB OF FULL SCALE)
16384 POINT FFT
VDD = REF = 5V
f
S
= 250kSPS
f
IN
= 20.43kHz
SNR = 92.5dB
THD = –109.9dB
SFDR = –111.0dB
Figure
7
. FFT Plot
2.0
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
0
32768
16384
49152
65536
05003-008
CODE
DNL (LSB)
POSITIVE DNL = +0.59 LSB
NEGATIVE DNL =
–0.56 LSB
Figure
8
. Different
ial Nonlin
earity
vs. Code
8000
7000
6000
5000
4000
3000
2000
1000
0
251B
251C
251D
251E
251F
2520
2521
2522
2523
2524
2525
2526
05003-009
CODE IN HEX
COUNTS
VDD = REF = 2.5V
0
0
27
2808
50
1
0
0
28148
65487
2133
32418
Figure
9
. Histogram of a DC Input at th
e Code Center
0
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
10
20
30
40
50
60
70
05003-010
FREQUENCY (kHz)
AMPLITUDE (dB OF FULL SCALE)
16384 POINT FFT
VDD = REF = 2.5V
f
S
= 150kSPS
f
IN
= 20.43kHz
SNR = 88.5dB
THD = –102.7dB
SFDR = –105.1dB
Figure
10
. FFT Plot
Rev.
B
| Page
9
of
16
AD7694
Data Sheet
100
95
90
85
80
17
16
15
14
13
2.5
3.0
3.5
4.0
4.5
5.0
05003-011
REFERENCE VOLTAGE (V)
SNR, S/[N+D] (dB)
ENOB (Bits)
SNR
S/[N+D]
ENOB
Figure
11
. SNR, S/(N + D), and ENOB v
s. Reference Voltage
100
95
90
85
80
75
70
0
50
100
150
200
05003-012
FREQUENCY (kHz)
S/[N+D] (dB)
V
REF
= 2.5V, –1dB
V
REF
= 5V, –10dB
V
REF
= 5V, –1dB
Figure
12
. S/[N + D] vs. Frequency
–80
–115
–110
–105
–100
–95
–90
–85
0
40
80
120
160
200
05003-013
FREQUENCY (kHz)
THD (dB)
V
REF
= 5V, –1dB
V
REF
= 2.5V,
–1dB
Figure
13
. THD vs. Frequency
1200
1000
800
600
400
200
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
05003-014
SUPPLY (V)
OPERATING CURRENT (
µ
A)
f
S
= 100kSPS
Figure
14
. Operating Current vs. Supply
800
900
400
500
600
700
300
200
100
0
–55
125
105
85
65
45
25
5
–15
–35
05003-015
TEMPERATURE (
°
C)
OPERATING CURRENT (
µ
A)
VDD = 5V,
f
S
= 100kSPS
VDD = 2.7V,
f
S
= 100kSPS
Figure
15
. Op
erating Current vs. T
emperature
1000
0
250
500
750
–55
–35
–15
5
25
45
65
85
105
125
05003-016
TEMPERATURE (
°
C)
POWER-DOWN CURRENT (nA)
Figure
16
. Po
we
r
-
Down Current vs. T
emperature
Rev.
B
| Page
10
of
16
Data Sheet
AD7694
6
–6
–4
–
2
0
2
4
–55
125
105
85
65
45
25
5
–15
–35
05003-017
TEMPERATURE (
°
C)
OFFSET ERROR, GAIN ERROR (LSB)
OFFSET ERROR
GAIN ERROR
Figure
17
. Offset and Gain Error vs. T
e
mper
ature
Rev.
B
| Page
11
of
16
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P17
AD7694BRMZ
Mfr. #:
Buy AD7694BRMZ
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 250 kSPS 16-BIT
Lifecycle:
New from this manufacturer.
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