AD1671 Analog Devices, AD1671 Datasheet - Page 3

• Manufacturer Part Number: AD1671
• Description: Complete 12-Bit 1.25 MSPS Monolithic A/D Converter
• Manufacturer: Analog Devices

REV. B
AC SPECIFICATIONS
Parameter
SIGNAL-TO-NOISE PLUS DISTORTION RATIO
EFFECTIVE NUMBER OF BITS (ENOB)
TOTAL HARMONIC DISTORTION (THD)
PEAK SPURIOUS OR PEAK HARMONIC COMPONENT
SMALL SIGNAL BANDWIDTH
FULL POWER BANDWIDTH
INTERMODULATION DISTORTION (IMD)
NOTES
1
2
Specifications subject to change without notice.
SWITCHING SPECIFICATIONS
Parameters
Conversion Time
Sample Rate
ENCODE Pulse Width High (Figure 1a)
ENCODE Pulse Width Low (Figure 1b)
DAV Pulse Width
ENCODE Falling Edge Delay
Start New Conversion Delay
Data and OTR Delay from DAV Falling Edge
Data and OTR Valid before DAV Rising Edge
NOTES
1
2
Specifications subject to change without notice.
f
f
indicated.
t
t
IN
A
DD
SS
(S/N + D)
2nd Order Products
3rd Order Products
= 99 kHz, f
amplitude = –0.5 dB (9.44 V p-p) bipolar mode full scale unless otherwise indicated. All measurements referred to a 0 dB ( 5 V) input signal, unless otherwise
is measured from when the outputs cross 0.4 V or 2.4 V to when the rising edge of DAV crosses 2.4 V with a 25 pF load capacitor on each output pin.
is measured from when the falling edge of DAV crosses 0.8 V to when the output crosses 0.4 V or 2.4 V with a 25 pF load capacitor on each output pin.
–0.5 dB Input
–20 dB Input
MSB, OTR
ENCODE
BIT 1–12
DAV
B
= 100 kHz with f
Figure 1a. Encode Pulse HIGH
t
ENC
DATA 0 (PREVIOUS)
SAMPLE
(T
f
lNPUT
= 1 MSPS.
MIN
t
to T
= 1OO kHz, unless otherwise noted)
C
MAX
with V
t
DD
(For all grades T
V
EE
t
DAV
= –5 V
CC
2
DATA 1
t
SS
= +5 V
t
R
5%; V
MIN
5%, V
Symbol
t
F
t
t
t
t
t
t
t
C
ENC
ENCL
DAV
F
R
DD
SS
S
2
to T
IL
1
–3–
= 0.8 V, V
LOGIC
MAX
1
with V
= +5 V
Min
68
11.2
MSB, OTR
IH
AD1671J/A/S
ENCODE
BIT 1–12
CC
= 2.0 V, V
= +5 V
DAV
Typ
70
50
–80
12
2
–80
–80
–85
10%, V
Min
20
20
150
0
0
20
20
Figure 1b. Encode Pulse LOW
OL
Max
–77
–75
–75
EE
–75
= 0.4 V and V
5%, V
= –5 V
DATA 0 (PREVIOUS)
LO61C
Typ
75
75
Min
68
11.2
= +5 V
5%, f
OH
= 2.4 V)
AD1671K
t
C
SAMPLE
Typ
71
51
–83
–81
12
2
–80
–85
10%,
= 1 MSPS,
t
DD
Max
800
1.25
50
300
t
DAV
Max
–77
–75
–75
–75
t
t
F
ENCL
t
SS
DATA 1
AD1671
t
R
Units
ns
MSPS
ns
ns
ns
ns
ns
ns
ns
Units
dB
dB
Bits
dB
MHz
MHz
dB
dB
dB