LTC1404 LINER [Linear Technology], LTC1404 Datasheet - Page 8

• Manufacturer Part Number: LTC1404
• Description: Complete SO-8, 12-Bit, 600ksps ADC with Shutdown
• Manufacturer: LINER [Linear Technology]

PIN
V
tantalum in parallel with 0.1 F ceramic).
A
(Bipolar).
V
(10 F tantalum in parallel with 0.1 F ceramic).
GND (Pin 4): Ground. GND should be tied directly to an
analog ground plane.
D
this pin.
LTC1404
TYPICAL PERFORMANCE CHARACTERISTICS
8
CC
IN
REF
OUT
U
(Pin 2): Analog Input. 0V to 4.096V (Unipolar), 2.048V
(Pin 1): Positive Supply, 5V. Bypass to GND (10 F
(Pin 5): The A/D conversion result is shifted out from
(Pin 3): 2.43V Reference Output. Bypass to GND
FUNCTIONS
U
20
15
10
5
0
–50
Unipolar Mode V
vs Temperature
f
SAMPLE
U
–25
= 600kHz
0
TEMPERATURE ( C)
W
25
CC
U
50
Supply Current
75
100
1404 G23
125
CLK (Pin 6): Clock. This clock synchronizes the serial data
transfer. A minimum CLK pulse of 40ns signals the ADC to
wake up from Nap or Sleep mode.
CONV (Pin 7): Conversion Start Signal. This active high
signal starts a conversion on its rising edge. Keeping CLK
low and pulsing CONV two/four times will put the ADC into
Nap/Sleep mode.
V
Bypass to GND with 10 F tantalum in parallel with 0.1 F
ceramic. V
SS
(Pin 8): Negative Supply. – 5V for bipolar operation.
15.0
12.5
10.0
7.5
5.0
2.5
0
–50
SS
Bipolar Mode Supply Current
vs Temperature
f
SAMPLE
should be tied to GND for unipolar operation.
–25
= 600kHz
0
TEMPERATURE ( C)
25
V
V
SS
50
CC
CURRENT
CURRENT
75
100
1404 G24
125
300
250
200
150
100
50
0