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AD6644ST Datenblatt(PDF) 3 Page - Analog Devices

Teilenummer AD6644ST
Bauteilbeschribung  14-Bit, 40 MSPS/65 MSPS A/D Converter
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Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

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REV. 0
AD6644
AC SPECIFICATIONS1
Test
AD6644AST-40
AD6644AST-65
Parameter
Temp
Level
Min
Typ
Max
Min
Typ
Max
Unit
SNR
Analog Input
2.2 MHz
25
°C
II
74.5
72
74.5
dB
@ –1 dBFS
15.5 MHz
25
°C
II
74.0
72
74.0
dB
30.5 MHz
25
°C
II
73.5
72
73.5
dB
SINAD
2
Analog Input
2.2 MHz
25
°C
II
74.5
72
74.5
dB
@ –1 dBFS
15.5 MHz
25
°C
II
74.0
72
74.0
dB
30.5 MHz
25
°C
V
73.0
73.0
dB
WORST HARMONIC (2
ND or 3RD)2
Analog Input
2.2 MHz
25
°CII
92
83
92
dBc
@ –1 dBFS
15.5 MHz
25
°CII
90
83
90
dBc
30.5 MHz
25
°C
V
85
85
dBc
WORST HARMONIC (4
TH or Higher)2
Analog Input
2.2 MHz
25
°CII
93
85
93
dBc
@ –1 dBFS
15.5 MHz
25
°CII
92
85
92
dBc
30.5 MHz
25
°C
V
92
92
dBc
TWO-TONE SFDR
2, 3, 4
Full
V
100
100
dBFS
TWO-TONE IMD REJECTION
2, 4
F1, F2 @ –7 dBFS
Full
V
90
90
dBc
ANALOG INPUT BANDWIDTH
25
°C
V
250
250
MHz
NOTES
1All ac specifications tested by driving ENCODE and ENCODE differentially.
2AV
CC = 5 V to 5.25 V for rated ac performance.
3Analog input signal power swept from –7 dBFS to –100 dBFS.
4F1 = 15 MHz, F2 = 15.5 MHz.
Specifications subject to change without notice.
SWITCHING SPECIFICATIONS
Test
AD6644AST-40/65
Parameter
Name
Temp
Level
Min
Typ
Max
Unit
ENCODE INPUT PARAMETERS
1
Encode Period
1 @ 65 MSPS
tENC
Full
V
15.4
ns
Encode Period
1 @ 40 MSPS
tENC
Full
V
25
ns
Encode Pulsewidth High
2 @ 65 MSPS
tENCH
Full
IV
6.2
7.7
9.2
ns
Encode Pulsewidth Low @ 65 MSPS
tENCL
Full
IV
6.2
7.7
9.2
ns
ENCODE/DATA READY
Encode Rising to Data Ready Falling
tDR
Full
IV
2.6
3.4
4.6
ns
Encode Rising to Data Ready Rising
tE_DR
tENCH + tDR
@ 65 MSPS (50% Duty Cycle)
Full
IV
10.3
11.1
12.3
ns
@ 40 MSPS (50% Duty Cycle)
Full
IV
15.1
15.9
17.1
ns
ENCODE/DATA (D13:0), OVR
ENC to DATA Falling Low
tE_FL
Full
IV
3.8
5.5
9.2
ns
ENC to DATA Rising Low
tE_RL
Full
IV
3.0
4.3
6.4
ns
ENCODE to DATA Delay (Hold Time)
3
tH_E
Full
IV
3.0
4.3
6.4
ns
ENCODE to DATA Delay (Setup Time)
4
tS_E
tENC – tE_FL
Encode = 65 MSPS (50% Duty Cycle)
Full
IV
6.2
9.8
11.6
ns
Encode = 40 MSPS (50% Duty Cycle)
Full
IV
15.9
19.4
21.2
ns
(AVCC = 5 V, DVCC = 3.3 V; ENCODE and ENCODE = Maximum Conversion Rate MSPS; TMIN = –25 C, TMAX = +85 C)
(AVCC = 5 V, DVCC = 3.3 V; ENCODE and ENCODE = Maximum Conversion Rate MSPS; TMIN =
–25 C, TMAX = +85 C, CLOAD = 10 pF)


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