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LTC1860L Datasheet(PDF) 1 Page - Linear Technology

Part No. LTC1860L
Description  Power, 3V, 12-Bit, 150ksps 1- and 2-Channel ADCs in MSOP
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LTC1860L Datasheet(HTML) 1 Page - Linear Technology

 
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1
LTC1860L/LTC1861L
18601Lf
APPLICATIO S
FEATURES
DESCRIPTIO
TYPICAL APPLICATIO
µPower, 3V, 12-Bit, 150ksps
1- and 2-Channel ADCs in MSOP
Single 3V Supply, 150ksps, 12-Bit Sampling ADC
Supply Current vs Sampling Frequency
The LTC
®1860L/LTC1861L are 12-bit A/D converters that
are offered in MSOP and SO-8 packages and operate on a
single 3V supply. At 150ksps, the supply current is only
450
µA. The supply current drops at lower speeds because
the LTC1860L/LTC1861L automatically power down be-
tween conversions. These 12-bit switched capacitor suc-
cessive approximation ADCs include sample-and-holds.
The LTC1860L has a differential analog input with an
external reference pin. The LTC1861L offers a software-
selectable 2-channel MUX and an external reference pin on
the MSOP version.
The 3-wire, serial I/O, MSOP or SO-8 package and
extremely high sample rate-to-power ratio make these
ADCs ideal choices for compact, low power, high speed
systems.
These ADCs can be used in ratiometric applications or with
external references. The high impedance analog inputs
and the ability to operate with reduced spans down to 1V
full scale allow direct connection to signal sources in many
applications, eliminating the need for external gain stages.
s
12-Bit 150ksps ADCs in MSOP Package
s
Single 3V Supply
s
Low Supply Current: 450
µA (Typ)
s
Auto Shutdown Reduces Supply Current
to 10
µA at 1ksps
s
True Differential Inputs
s
1-Channel (LTC1860L) or 2-Channel (LTC1861L)
Versions
s
SPI/MICROWIRE
TM Compatible Serial I/O
s
High Speed Upgrade to LTC1285/LTC1288
s
Pin Compatible with 16-Bit LTC1864L/LTC1865L
s
No Minimum Data Transfer Rate
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
High Speed Data Acquisition
s
Portable or Compact Instrumentation
s
Low Power Battery-Operated Instrumentation
s
Isolated and/or Remote Data Acquisition
MICROWIRE is a trademark of National Semiconductor Corporation.
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8
7
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5
VREF
IN+
IN
GND
VCC
SCK
SDO
CONV
LTC1860L
1860L TA01
ANALOG INPUT
0V TO 3V
3V
1
µF
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
SAMPLING FREQUENCY (kHz)
0.1
1
10
100
1000
0.01
1
10
1000
1860L/61L TA02
0.1
100
CONV LOW = 1.5
µs
TA = 25°C
VCC = 2.7V


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