AD6640AST Analog Devices Inc, AD6640AST Datasheet - Page 7

IC ADC 12BIT 65MSPS 44-LQFP

AD6640AST

Manufacturer Part Number
AD6640AST
Description
IC ADC 12BIT 65MSPS 44-LQFP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD6640AST

Rohs Status
RoHS non-compliant
Function
A/D Converter
Rf Type
Cellular/PCS, GPS
Secondary Attributes
12 Bit, 65MSPS
Package / Case
44-LQFP

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REV. A
ENCODE
V
REF
AV
AIN
AIN
CC
Figure 4. Compensation Pin, C1
Figure 2. Analog Input Stage
V
V
V
CURRENT
V
Figure 3. ENCODE Inputs
MIRROR
CH
CL
CH
CL
R1
17k
R2
8k
AV
AV
AV
CC
CC
CC
450
450
CIRCUITS
AV
TIMING
AV
CC
CC
DIGITAL OUTPUTS
C1
ENCODE INPUTS
BUF
BUF
BUF
ANALOG
AV
INPUTS
(ENCODE)
17k
(D11–D0)
CC
8k
R2
R1
AIN
AIN
V
T/H
T/H
REF
AV
CC
t
A
Figure 1. Timing Diagram
ENCODE
t
OD
N
–7–
–7–
N – 2
N + 1
2.4V
N – 1
Equivalent Circuits–AD6640
Figure 5. Digital Output Stage
Figure 6. 2.4 V Reference
CURRENT
CURRENT
MIRROR
MIRROR
DV
CC
N
0.5mA
V
REF
AV
CC
DV
AV
CC
CC
D0–D11
V
REF

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