previous conversion is output on the DOUT
參數(shù)資料
型號(hào)： LTC1289CCN#PBF
廠商： Linear Technology
文件頁(yè)數(shù)： 28/28頁(yè)
文件大小： 0K
描述： IC DATA ACQ SYS 12BIT 3V 20-DIP
標(biāo)準(zhǔn)包裝： 18
類型： 數(shù)據(jù)采集系統(tǒng)（DAS）
分辨率（位）： 12 b
采樣率（每秒）： 25k
數(shù)據(jù)接口： 串行，并聯(lián)
電壓電源： 雙 ±
電源電壓： ±3.3V
工作溫度： 0°C ~ 70°C
安裝類型： 通孔
封裝/外殼： 20-DIP（0.300"，7.62mm）
供應(yīng)商設(shè)備封裝： 20-PDIP
包裝： 管件
9
LTC1289
1289fb
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
previous conversion is output on the DOUT line. At the end
of the data exchange the requested conversion begins and
CS should be brought high. After tCONV, the conversion is
complete and the results will be available on the next data
transfer cycle. As shown below, the result of a conversion
is delayed by one CS cycle from the input word requesting
it.
Operating Sequence
(Example: Differential Inputs (CH3-CH2), Bipolar, MSB-First and 12-Bit Word Length)
Input Data Word
The LTC1289 8-bit data word is clocked into the DIN input
on the first eight rising SCLK edges after chip select is
recognized. Further inputs on the DIN pin are then ignored
until the next CS cycle. The eight bits of the input word are
defined as follows:
DIN
DOUT DOUT WORD 0
DIN WORD 1
DATA
TRANSFER
DOUT WORD 2
DIN WORD 3
DOUT WORD 1
DIN WORD 2
DATA
TRANSFER
tCONV
A/D
CONVERSION
tCONV
A/D
CONVERSION
LTC1289 AI01
SGL/
DIFF
SELECT
1
SELECT
0
UNI
MSBF
WL1
MUX ADDRESS
MSB-FIRST/
LSB-FIRST
UNIPOLAR/
BIPOLAR
WORD
LENGTH
LTC1289 AI02
ODD/
SIGN
WL0
123456789
10
11
12
tCONV
DON'T CARE
tCYC
SHIFT CONFIGURATION
WORD IN
tSMPL
SHIFT A/D RESULT OUT AND
NEW CONFIGURATION WORD IN
B11 B10 B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
(SB)
LTC1289 AI03
SCLK
DIN
DOUT
CS
The LTC1289 is a data acquisition component which
contains the following functional blocks:
1. 12-bit successive approximation capacitive A/D
converter
2. Analog multiplexer (MUX)
3. Sample-and-hold (S/H)
4. Synchronous, full duplex serial interface
5. Control and timing logic
DIGITAL CONSIDERATIONS
Serial Interface
The LTC1289 communicates with microprocessors and
other external circuitry via a synchronous, full duplex, four
wire serial interface (see Operating Sequence). The shift
clock (SCLK) synchronizes the data transfer with each bit
being transmitted on the falling SCLK edge and captured
on the rising SCLK edge in both transmitting and receiving
systems. The data is transmitted and received simulta-
neously (full duplex).
Data transfer is initiated by a falling chip select (CS) signal.
After the falling CS is recognized, an 8-bit input word is
shifted into the DIN input which configures the LTC1289
for the next conversion. Simultaneously, the result of the
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參數(shù)描述
LTC1289CCSW 功能描述:IC DATA ACQ SYS 12BIT 3V 20-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤(pán)
LTC1289CCSW#PBF 功能描述:IC DATA ACQ SYS 12BIT 3V 20-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤(pán)
LTC1289CCSW#TR 功能描述:IC DATA ACQ SYS 12BIT 3V 20SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤(pán)
LTC1289CCSW#TRPBF 功能描述:IC DATA ACQ SYS 12BIT 3V 20-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤(pán)
LTC1290BCJ 制造商:Linear Technology 功能描述:ADC Single SAR 50ksps 12-bit Serial 20-Pin CDIP
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