LTC1401CS8 Linear Technology, LTC1401CS8 Datasheet - Page 6

• Manufacturer Part Number: LTC1401CS8
• Description: IC A/D CONV 12BIT W/SHTDN 8-SOIC
• Manufacturer: Linear Technology

Specifications of LTC1401CS8

• Number Of Bits: 12
• Sampling Rate (per Second): 200k
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 30mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

FUNCTIONAL BLOCK DIAGRA
TEST CIRCUITS
LTC1401
PIN
V
tantalum in parallel with 0.1µF ceramic).
A
V
(10µF tantalum in parallel with 0.1µF ceramic).
GND (Pin 4): Ground. GND should be tied directly to an
analog ground plane.
D
this pin.
6
CC
IN
REF
OUT
U
U
(Pin 2): Analog Input. 0V to 2.048V.
(Pin 1): Positive Supply, 3V. Bypass to GND (10µF
(Pin 5): The A/D conversion result is shifted out from
(Pin 3): 1.2V Reference Output. Bypass to GND
FUNCTIONS
U
U
U
CONV
V
D
CLK
A
REF
OUT
IN
Hi-Z TO V
V
3k
V
CONTROL
OH
OL
LOGIC
1.20V REF
TO V
TO Hi-Z
OH
OH
C
LOAD
SUCCESSIVE APPROXIMATION
W
REGISTER/PARALLEL TO
12-BIT CAPACITIVE DAC
SERIAL CONVERTER
C
SAMPLE
12
CLK (Pin 6): Clock. This clock synchronizes the serial data
transfer. A minimum CLK pulse of 60ns 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.
SHDN (Pin 8): Shutdown Input. Pull this pin Low to put the
ADC in Shutdown mode and save power (REFRDY will go
Low). The device will draw 4.5µA in this mode.
D
OUT
ZEROING SWITCH
COMP
Hi-Z TO V
V
V
OL
OH
3V
TO Hi-Z
TO V
3k
C
OL
OL
LOAD
LTC1401 • TC01
LTC1401 • BD01
V
GND
SHDN
D
CC
OUT
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