参数资料
型号: LTC1966MPMS8#TRPBF
厂商: Linear Technology
文件页数: 32/38页
文件大小: 391K
描述: IC RMS/DC CONV MICROPWR 8-MSOP
标准包装: 2,500
电流 - 电源: 155µA
电源电压: 2.7 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 带卷 (TR)
LTC1966
32
1966fb
TROUBLESHOOTING GUIDE
Top Ten LTC1966 Application Mistakes
1. Circuit wont workDead On Arrivalno power drawn.
 Probably forgot to enable the LTC1966 by pulling
  Pin? low.
  Solution: Tie Pin 8 to Pin 1.
2. Circuit wont work, but draws power. Zero or
 
very little output, single-ended input application.
 Probably didnt connect both input pins.
  Solution: Tie both inputs to something. See Input
  Connections in the Design Cookbook.
 
applicaTions inForMaTion
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.
TYPE 7136
ADC
LTC1966
HI
31
30
5
6
LO
V
OUT
OUT RTN
1966 TS04
GROUND PIN 6
LTC1966
CONNECT PIN 3
IN1
2
3
NC
IN2
1966 TS02
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.
LTC1966
IN1
2
3
IN2
1966 TS03
DC CONNECT ONE INPUT
LTC1966
DC CONNECT ONE INPUT
IN1
2
3
IN2
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
  readings > ?mV
DC
.
6. Linearity perceived to be out of specification particularly
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
  linearity errors at low input amplitudes as well. See
  Error Analyses section.
  Possible Solution: Include a trim for input offset.
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LTC1967CMS8#PBF 功能描述:IC CONVERTER RMS-DC PREC 8MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - RMS 至 DC 转换器 系列:- 标准包装:46 系列:- 电流 - 电源:1.2mA 电源电压:±18 V,36 V 安装类型:表面贴装 封装/外壳:16-SOIC(0.295",7.50mm 宽) 供应商设备封装:16-SOIC W 包装:管件
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