參數(shù)資料
型號： LTC2171IUKG-12#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： ADC
英文描述： 4-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
封裝： 7 X 8 MM, LEAD FREE, PLASTIC, QFN-52
文件頁數(shù)： 15/34頁
文件大?。?/td> 1304K
代理商： LTC2171IUKG-12#PBF
LTC2172-12/
LTC2171-12/LTC2170-12
22
21721012fb
applicaTions inForMaTion
Reference
TheLTC2172-12/LTC2171-12/LTC2170-12hasaninternal
1.25V voltage reference. For a 2V input range using the
internal reference, connect SENSE to VDD. For a 1V input
range using the internal reference, connect SENSE to
ground. For a 2V input range with an external reference,
apply a 1.25V reference voltage to SENSE (Figure 9).
The input range can be adjusted by applying a voltage to
SENSE that is between 0.625V and 1.30V. The input range
will then be 1.6 VSENSE.
The reference is shared by all four ADC channels, so it is
not possible to independently adjust the input range of
individual channels.
The VREF, REFH and REFL pins should be bypassed, as
shown in Figure 8. The 0.1F capacitor between REFH and
REFL should be as close to the pins as possible (not on
the backside of the circuit board).
Encode Input
The signal quality of the encode inputs strongly affects
the A/D noise performance. The encode inputs should
be treated as analog signals—do not route them next to
digital traces on the circuit board. There are two modes
of operation for the encode inputs: the differential encode
mode (Figure 10), and the single-ended encode mode
(Figure 11).
Figure 8. Reference Circuit
Figure 9. Using an External 1.25V Reference
Figure 10. Equivalent Encode Input Circuit
for Differential Encode Mode
Figure 11. Equivalent Encode Input Circuit
for Single-Ended Encode Mode
VREF
REFH
SENSE
TIE TO VDD FOR 2V RANGE;
TIE TO GND FOR 1V RANGE;
RANGE = 1.6 VSENSE FOR
0.625V < VSENSE < 1.300V
1.25V
REFL
0.1F
2.2F
INTERNAL ADC
HIGH REFERENCE
BUFFER
5
0.8x
DIFF AMP
INTERNAL ADC
LOW REFERENCE
1.25V BANDGAP
REFERENCE
0.625V
RANGE
DETECT
AND
CONTROL
1F
0.1F
LTC2172-12
217212 F08
SENSE
1.25V
EXTERNAL
REFERENCE
1F
VREF
217212 F09
LTC2172-12
VDD
LTC2172-12
217212 F10
ENC–
ENC+
15k
VDD
DIFFERENTIAL
COMPARATOR
30k
ENC+
ENC–
217212 F11
0V
1.8V TO 3.3V
LTC2172-12
CMOS LOGIC
BUFFER
相關(guān)PDF資料
PDF描述
LTC2172CUKG-12#TRPBF 4-CH 12-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
LTC2172CUKG-14#PBF 4-CH 14-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
LTC2172IUKG-14#TRPBF 4-CH 14-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
LTC2170CUKG-14#PBF 4-CH 14-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
LTC2170IUKG-14#TRPBF 4-CH 14-BIT PROPRIETARY METHOD ADC, SERIAL ACCESS, PQCC52
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC2171IUKG-12TRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:12-Bit, 65Msps/40Msps/25Msps Low Power Quad ADCs
LTC2171IUKG-14#PBF 功能描述:IC ADC 14BIT SER/PAR 40M 52-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個(gè)單端，單極；2 個(gè)差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
LTC2171IUKG-14#TRPBF 功能描述:IC ADC 14BIT SER/PAR 40M 52-QFN 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 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端，雙極
LTC2171IUKG-14PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:14-Bit, 65Msps/40Msps/25Msps Low Power Quad ADCs
LTC2171IUKG-14TRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:14-Bit, 65Msps/40Msps/25Msps Low Power Quad ADCs
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