参数资料
型号: LTC1408CUH#PBF
厂商: Linear Technology
文件页数: 1/20页
文件大小: 0K
描述: IC ADC 14BIT 600KSPS 32-QFN
标准包装: 73
位数: 14
采样率(每秒): 600k
数据接口: 串行
转换器数目: 1
功率耗散(最大): 15mW
电压电源: 模拟和数字
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘
供应商设备封装: 32-QFN 裸露焊盘(5x5)
包装: 管件
输入数目和类型: 12 个单端,单极;12 个单端,双极;6 个差分,单极;6 个差分,双极
产品目录页面: 1346 (CN2011-ZH PDF)
配用: DC887A-ND - BOARD SAR ADC LTC1408
1
LTC1408
1408fa
6 Channel, 14-Bit, 600ksps
Simultaneous Sampling ADC
with Shutdown
The LTC
1408 is a 14-bit, 600ksps ADC with six simulta-
neously 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 shutdown
feature lowers power consumption to 6
W. The combina-
tion of low power and tiny package makes the LTC1408
suitable for portable applications.
The LTC1408 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 90dB 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
76dB SINAD
Low Power Dissipation: 15mW
3V Single Supply Operation
2.5V Internal Bandgap Reference, Can be Overdriven
with External Reference
3-Wire Serial Interface
Internal Conversion Triggered by CONV
SLEEP (6
W) Shutdown Mode
NAP (3.3mW) Shutdown Mode
0V to 2.5V Unipolar, or
±1.25V Bipolar Differential
Input Range
90dB 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
, 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.
+
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
14-BIT ADC
14-BIT LATCH 5
14-BIT LATCH 4
14-BIT LATCH 3
14-BIT LATCH 2
14-BIT LATCH 1
14-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
1408 TA01
+
S AND H
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