參數(shù)資料
型號(hào)： LTC1090CSW#TR
廠商： Linear Technology
文件頁(yè)數(shù)： 1/28頁(yè)
文件大?。?/td> 0K
描述： IC DATA ACQ SYSTEM 10BIT 20SOIC
標(biāo)準(zhǔn)包裝： 1,000
類型： 數(shù)據(jù)采集系統(tǒng)（DAS），ADC
分辨率（位）： 10 b
采樣率（每秒）： 30k
數(shù)據(jù)接口： 串行
電壓電源： 單/雙電源
電源電壓： ±5V，5V，10V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 20-SOIC（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 20-SOIC
包裝： 帶卷 (TR)
1
LTC1090
1090fc
Single Chip 10-Bit Data
Acquisition System
■
Software Programmable Features:
Unipolar/Bipolar Conversions
4 Differential/8 Single Ended Inputs
MSB or LSB First Data Sequence
Variable Data Word Length
■
Built-In Sample and Hold
■
Single Supply 5V, 10V or ±5V Operation
■
Direct 4 Wire Interface to Most MPU Serial Ports and
All MPU Parallel Ports
■
30kHz Maximum Throughput Rate
■
Resolution: 10 Bits
■
Total Unadjusted Error (LTC1090A): ±1/2LSB Max
■
Conversion Time: 22s
■
Supply Current: 2.5mA Max, 1.0mA Typ
The LTC
1090 is a data acquisition component which
contains a serial I/O successive approximation A/D con-
verter. It uses LTCMOS
TM switched capacitor technology
to perform either 10-bit unipolar, or 9-bit plus sign bipolar
A/D conversions. The 8-channel input multiplexer can be
configured for either single ended or differential inputs (or
combinations thereof). An on-chip sample and hold is
included for all single ended input channels.
The serial I/O is designed to be compatible with industry
standard full duplex serial interfaces. It allows either
MSB or LSB first data and automatically provides 2’s
complement output coding in the bipolar mode. The
output data word can be programmed for a length of 8, 10,
12 or 16 bits. This allows easy interface to shift registers
and a variety of processors.
The LTC1090A is specified with total unadjusted error
(including the effects of offset, linearity and gain errors)
less than ±0.5LSB.
The LTC1090 is specified with offset and linearity less than
±0.5LSB but with a gain error limit of ±2LSB for
applications where gain is adjustable or less critical.
FEATURES
DESCRIPTIO
U
LTCMOS is a trademark of Linear Technology Corp.
, LTC and LT are registered trademarks of Linear Technology Corporation.
KEY SPECIFICATIO S
U
LTC1090 TA02
OUTPUT CODE
0
512
1024
ERROR
(LSBs)
1.0
0.5
0.0
– 0.5
–1.0
Linearity Plot
TYPICAL APPLICATIO
U
5V
LTC1090
MPU
(e.g., 8051)
FOR 8051 CODE SEE
APPLICATIONS INFORMATION
SECTION
DIFFERENTIAL
INPUT
BIPOLAR INPUT
–5V
5V
–5V
(+)
(–)
T
LTC1090 TA01
UNIPOLAR
INPUTS
P1.1
DOUT
P1.2
DIN
P1.3
SCLK
P1.4
CS
SERIAL DATA
LINK
– UNIPOLAR
INPUT
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