參數(shù)資料
型號： LTC1408IUH-12
廠商： LINEAR TECHNOLOGY CORP
元件分類： ADC
英文描述： 6-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC32
封裝： 5 X 5 MM, PLASTIC, MO-220WHHD, QFN-32
文件頁數(shù)： 1/20頁
文件大小： 270K
代理商： LTC1408IUH-12
1
LTC1408-12
140812f
6 Channel, 12-Bit, 600ksps
Simultaneous Sampling ADC
with Shutdown
The LTC
1408-12 is a 12-bit, 600ksps ADC with six
simultaneously sampled differential inputs. The device
draws only 5mA from a single 3V supply, and comes in a
tiny 32 pin (5mm
× 5mm) QFN package. A SLEEP shut-
down feature further reduces power consumption to
6
W. The combination of low power and tiny package
makes the LTC1408-12 suitable for portable applications.
The LTC1408-12 contains six separate differential inputs
that are sampled simultaneously on the rising edge of the
CONV signal. These six sampled inputs are then
converted at a rate of 100ksps per channel.
The 83dB common mode rejection allows users to
eliminate ground loops and common mode noise by
measuring signals differentially from the source.
The device converts 0V to 2.5V unipolar inputs differen-
tially, or
±1.25V bipolar inputs also differentially,
depending on the state of the BIP pin. Any analog input
may swing rail-to-rail as long as the differential input
range is maintained.
The conversion sequence can be abbreviated to convert
fewer than six channels, depending on the logic state of
the SEL2, SEL1 and SEL0 inputs.
The serial interface sends out the six conversion results in
96 clocks for compatibility with standard serial interfaces.
■ 600ksps ADC with 6 Simultaneously Sampled
Differential Inputs
■ 100ksps Throughput per Channel
■ 72dB SINAD
■ Low Power Dissipation: 15mW
■ 3V Single Supply Operation
■ 2.5V Internal Bandgap Reference, Can be Overdriven
with External Reference
■ 3-Wire SPI-Compatible Serial Interface
■ 0V to 2.5V Unipolar, or
±1.25V Bipolar Differential
Input Range
■ SLEEP (6
W) Shutdown Mode
■ NAP (3.3mW) Shutdown Mode
■ Internal Conversion Triggered by CONV
■ 83dB Common Mode Rejection
■ Tiny 32-Pin (5mm
××××× 5mm) QFN Package
■ Multiphase Power Measurement
■
Multiphase Motor Control
■ Data Acquisition Systems
■ Uninterruptable Power Supplies
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
BLOCK DIAGRA
W
–
+
4
5
25
24
–
+
7
6
9
12
13
16
19
8
CH0–
CH0+
CH1–
CH1+
10
11
–
+
14
15
CH2–
CH2+
CH3–
CH3+
–
+
17
18
–
+
20
21
S AND H
CH4–
CH4+
CH5–
CH5+
MUX
VREF
10
F
BIP
SEL2 SEL1 SEL0
GND
2.5V
REFERENCE
600ksps
12-BIT ADC
12-BIT LATCH 5
12-BIT LATCH 4
12-BIT LATCH 3
12-BIT LATCH 2
12-BIT LATCH 1
12-BIT LATCH 0
10
F3V
VCC
VDD
26
29
23
22
33
27
28
2
1
SD0
0.1
F
3
OVDD
3V
32
SCK
31
DGND
OGND
30
CONV
THREE-
STATE
SERIAL
OUTPUT
PORT
TIMING
LOGIC
235114 TA01
–
+
S AND H
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6084440, 6522187.
相關(guān)PDF資料
PDF描述
LTC1409CS#TR 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
LTC1409IS#TR 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
LTC1409CS 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
LTC1409IS 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
LTC1409DICE 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, UUC28
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