LTC1292 LINER [Linear Technology], LTC1292 Datasheet - Page 7

• Manufacturer Part Number: LTC1292
• Description: Single Chip 12-Bit Data Acquisition Systems
• Manufacturer: LINER [Linear Technology]

BLOCK
TEST CIRCUITS
5V
D
OUT
On and Off Channel Leakage Current
I D AGRA
TEST POINT
POLARITY
Load Circuit for t
V
+IN
–IN
D
Load Circuit for t
CC
OUT
100pF
3k
8
2
3
GND
INPUT MUX
I
I
4
REGISTER
ON
OFF
A
A
ANALOG
INPUT
SHIFT
W
1.4V
3k
100pF
dDO
dis
, t
and t
r
and t
5V t
t
ON CHANNEL
OFF CHANNEL
dis
en
TEST POINT
WAVEFORM 1
dis
LTC1292/7 TC03
SAMPLE
f
WAVEFORM 2, t
HOLD
AND
LTC1292/7 TC01
LTC1292/7 TC02
en
COMP
CAPACITIVE
12-BIT
WAVEFORM 1
WAVEFORM 2
(SEE NOTE 2)
LTC1292/7 TC06
(SEE NOTE 1)
DAC
D
OUT
D
Voltage Waveforms for D
CLK
OUT
D
D
OUT
OUT
Voltage Waveforms for D
CS
V
REF
t
5
r
NOTE 1: WAVEFORM 1 IS FOR AN OUTPUT WITH INTERNAL CONDITIONS SUCH
THAT THE OUTPUT IS HIGH UNLESS DISABLED BY THE OUTPUT CONTROL.
NOTE 2: WAVEFORM 2 IS FOR AN OUTPUT WITH INTERNAL CONDITIONS SUCH
THAT THE OUTPUT IS LOW UNLESS DISABLED BY THE OUTPUT CONTROL.
Voltage Waveforms for t
0.8V
t
dDO
REGISTER
CONTROL
OUTPUT
TIMING
12-BIT
SHIFT
SAR
AND
LTC1292/LTC1297
OUT
Rise and Fall Times, t
OUT
6
7
1
Delay Time, t
LTC1292/7 BD
CLK
D
CS
t
OUT
dis
dis
t
f
2.0V
dDO
LTC1292/7 TC04
LTC1292/7 TC05
2.4V
0.4V
10%
90%
r
, t
2.4V
0.4V
f
7