LTC1415 Linear Technology, LTC1415 Datasheet - Page 7

• Manufacturer Part Number: LTC1415
• Description: 12-Bit/ 1.25Msps/ 55mW Sampling A/D Converter
• Manufacturer: Linear Technology

FU CTIO AL BLOCK DIAGRA
TEST CIRCUITS
DBN
U
(A) Hi-Z TO V
REFCOMP
(4.096V)
AGND
DGND
1k
+A
– A
V
REF
U
Load Circuits for Access Timing
OH
IN
IN
AND V
OL
TO V
C
L
2k
OH
REF AMP
2.5V REF
DBN
(B) Hi-Z TO V
INTERNAL
CLOCK
OL
5V
AND V
1k
C
L
NAP/SLP
OH
W
1415 TC01
12-BIT CAPACITIVE DAC
SUCCESSIVE APPROXIMATION
TO V
OL
C
C
SHDN
SAMPLE
SAMPLE
CONTROL LOGIC
REGISTER
CONVST RD
DBN
CS
1k
(A) V
Load Circuits for Bus Relinquish Time
BUSY
OH
12
ZEROING SWITCHES
TO Hi-Z
+
–
COMP
OUTPUT LATCHES
100pF
DBN
•
•
•
(B) V
LTC1415
AV
DV
OV
D11
D0
OGND
1415 BD
OL
5V
DD
DD
DD
TO Hi-Z
1k
100pF
1415 TC02
7