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參數(shù)資料
| 型號(hào)： | LTC1867LAIGN#PBF |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 2/16頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 16BIT 8CH 175KSPS 16SSOP |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 175k |
| 數(shù)據(jù)接口： | MICROWIRE?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 2.7mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SSOP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 8 個(gè)單端，單極；8 個(gè)單端，雙極；4 個(gè)差分，單極；4 個(gè)差分，雙極 |
| 配用： | DC873A-ND - BOARD SAR ADC LTC1867L DC806A-ND - BOARD SAR ADC LTC1867 |
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LTC1863L/LTC1867L
10
1863l7lfc
Table 2. Channel Conguration (When COM = 1, CH7/COM Pin
Is Used as COMMON)
SD
OS
S1
S0
COM
CHANNEL CONFIGURATION
“+”
“–”
10
0
1
CH0
CH7/COM
10
0
1
CH2
CH7/COM
10
1
0
1
CH4
CH7/COM
10
1
CH6
CH7/COM
11
0
1
CH1
CH7/COM
11
0
1
CH3
CH7/COM
11
1
0
1
CH5
CH7/COM
Driving the Analog Inputs
The analog inputs of the LTC1863L/LTC1867L are easy to
drive. Each of the analog inputs can be used as a single-
ended input relative to the GND pin (CH0-GND, CH1-GND,
etc) or in pairs (CH0 and CH1, CH2 and CH3, CH4 and CH5,
CH6 and CH7) for differential inputs. In addition, CH7 can
act as a COM pin for both single-ended and differential
modes if the COM bit in the input word is high. Regard-
less of the MUX conguration, the “+” and “–” inputs are
sampled at the same instant. Any unwanted signal that is
common mode to both inputs will be reduced by the com-
mon mode rejection of the sample-and-hold circuit. The
inputs draw only one small current spike while charging
the sample-and-hold capacitors during the acquire mode.
In conversion mode, the analog inputs draw only a small
leakage current. If the source impedance of the driving
circuit is low then the LTC1863L/LTC1867L inputs can be
driven directly. More acquisition time should be allowed
for a higher impedance source.
The following list is a summary of the op amps that are
suitable for driving the LTC1863L/LTC1867L. More detailed
information is available in the Linear Technology data
books or Linear Technology website.
1863L7L F01a
CH0
GND
LTC1863L/
LTC1867L
REFCOMP
2000pF
10μF
50Ω
ANALOG
INPUT
1000pF
1863L7L F01b
CH0
CH1
LTC1863L/
LTC1867L
REFCOMP
1000pF
10μF
50Ω
DIFFERENTIAL
ANALOG
INPUTS
Figure 1a. Optional RC Input Filtering for Single-Ended Input
Figure 1b. Optional RC Input Filtering for Differential Inputs
LT1468: 90MHz, 22V/μs 16-bit accurate amplier
LT1469: Dual LT1468
LT1490A/LT1491A: Dual/quad micropower ampliers,
50μA/amplier max, 500μV offset, common mode range
extends 44V above V– independent of V+, 3V, 5V and ±15V
supplies.
LT1568: Very low noise, active RC lter building block,
cutoff frequency up to 10MHz, 2.7V to ±5V supplies.
LT1638/LT1639: Dual/quad 1.2MHz, 0.4V/μs ampliers,
230μA per amplier, 3V, 5V and ±15V supplies.
LT1881/LT1882: Dual and quad, 200pA bias current, rail-
to-rail output op amps, up to ±15V supplies.
LTC1992-2: Gain of 2 fully differential input/output am-
plier/driver, 2.5mV offset, CLOAD stable, 2.7V to ±5V
supplies.
LT1995: 30MHz, 1000V/μs gain selectable amplier, pin
congurable as a difference amplier, inverting and non-
inverting amplier, ±2.5V to ±15V supplies.
LTC6912: Dual programmable gain ampliers with SPI
serial interface, 2mV offset, 2.7V to ±5V supplies.
LTC6915: Zero drift, instrumentation amplier with SPI
programmable gain, 125dB CMRR, 0.1% gain accuracy,
10μV offset.
Input Filtering
The noise and the distortion of the input amplier and
other circuitry must be considered since they will add to
the LTC1863L/LTC1867L noise and distortion. Noisy input
circuitry should be ltered prior to the analog inputs to
minimize noise. A simple 1-pole RC lter is sufcient for
APPLICATIONS INFORMATION
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| LTC1867LCGN | 制造商:Linear Technology 功能描述:ADC Single SAR 175ksps 16-bit Serial 16-Pin SSOP N |
| LTC1867LCGN#PBF | 功能描述:IC ADC 16BIT 8CH 175KSPS 16SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
| LTC1867LCGN#PBF | 制造商:Linear Technology 功能描述:IC ADC 16BIT 175KSPS SSOP-16 |
| LTC1867LCGN#TRPBF | 功能描述:IC ADC 16BIT 8CH 175KSPS 16SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
| LTC1867LIGN | 制造商:Linear Technology 功能描述:ADC Single SAR 175ksps 16-bit Serial 16-Pin SSOP N |
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