參數(shù)資料
型號(hào)： LTC1967CMS8
廠商： Linear Integrated Systems
英文描述： Precision Extended Bandwidth, RMS-to-DC Converter
中文描述： 精密擴(kuò)展帶寬，有效值- DC轉(zhuǎn)換器
文件頁(yè)數(shù)： 24/28頁(yè)
文件大小： 328K
代理商： LTC1967CMS8
24
LTC1967
1967f
APPLICATIOU
TROUBLESHOOTING GUIDE
W
U
U
Top Ten LTC1967 Application Mistakes
1. Circuit won’t work–Dead On Arrival–no power drawn.
– Probably forgot to enable the LTC1967 by pulling
Pin8 low.
Solution: Tie Pin 8 to Pin 1.
2. Circuit won’t work, but draws power. Zero or very
little output, single-ended input application.
– Probably didn’t connect both input pins.
Solution: Tie both inputs to something. See “Input
Connections” in the Design Cookbook.
4. Gain is low by a few percent, along with other screwy
results.
– Probably tried to use output in a floating, differential
manner.
Solution: Tie Pin 6 to a low impedance. See “Output
Connections” in the Design Cookbook.
LTC1967
CONNECT PIN 3
IN1
2
3
NC
IN2
1967TS02
LTC1967
IN1
2
3
IN2
1967 TS03
DC-COUPLE ONE INPUT
LTC1967
DC-CONNECT ONE INPUT
IN1
2
3
IN2
3. Screwy results, particularly with respect to linearity
or high crest factors; differential input application.
– Probably AC-coupled both input pins.
Solution: Make at least one input DC-coupled. See
“Input Connections” in the Design Cookbook.
TYPE 7136
ADC
HI
LTC1967
31
30
5
6
LO
V
OUT
OUT RTN
1967 TS04
GROUND PIN 6
5. Offsets perceived to be out of specification because 0V
in
≠
0V out.
– The offsets are not specified at 0V in. No RMS-to-
DC converter works well at 0 due to a divide-by-zero
calculation.
Solution: Measure V
IOS
/V
OOS
by extrapolating read-
ings >
±
5mV
DC
.
6. Linearity perceived to be out of specification particu-
larly with small input signals.
– This could again be due to using 0V in as one of the
measurement points.
Solution: Check Linearity from 5mV
RMS
to
500mV
RMS
.
–
The input offset voltage can cause small AC linear
ityerrors at low input amplitudes as well. See “Error
Analyses” section.
Possible Solution: Include a trim for input offset.
相關(guān)PDF資料
PDF描述
LTC1967IMS8 Precision Extended Bandwidth, RMS-to-DC Converter
LTTJ Precision Extended Bandwidth, RMS-to-DC Converter
LTC1968 Precision Wide Bandwidth, RMS-to-DC Converter
LTC1968CMS8 Precision Wide Bandwidth, RMS-to-DC Converter
LTC1968IMS8 Precision Wide Bandwidth, RMS-to-DC Converter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1967CMS8#PBF 功能描述:IC CONVERTER RMS-DC PREC 8MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - RMS 至 DC 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:46 系列:- 電流 - 電源:1.2mA 電源電壓:±18 V，36 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
LTC1967CMS8#TR 功能描述:IC CONVERTER RMS-DC PREC 8MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - RMS 至 DC 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:46 系列:- 電流 - 電源:1.2mA 電源電壓:±18 V，36 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
LTC1967CMS8#TRPBF 功能描述:IC CONVERTER RMS-DC PREC 8MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - RMS 至 DC 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:46 系列:- 電流 - 電源:1.2mA 電源電壓:±18 V，36 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
LTC1967CMS8PBF 制造商:Linear Technology 功能描述:RMS-DC converter, LTC1967 40kHz MSOP
LTC1967IMS8 功能描述:IC CONVERTER RMS-DC PREC 8MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - RMS 至 DC 轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:46 系列:- 電流 - 電源:1.2mA 電源電壓:±18 V，36 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC W 包裝:管件
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