Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

INA169-Q1 Datasheet(PDF) 6 Page - Texas Instruments

Click here to check the latest version.
Part # INA169-Q1
Description  HIGH SIDE MEASUREMENT CURRENT SHUNT MONITOR
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

INA169-Q1 Datasheet(HTML) 6 Page - Texas Instruments

Back Button INA169-Q1 Datasheet HTML 2Page - Texas Instruments INA169-Q1 Datasheet HTML 3Page - Texas Instruments INA169-Q1 Datasheet HTML 4Page - Texas Instruments INA169-Q1 Datasheet HTML 5Page - Texas Instruments INA169-Q1 Datasheet HTML 6Page - Texas Instruments INA169-Q1 Datasheet HTML 7Page - Texas Instruments INA169-Q1 Datasheet HTML 8Page - Texas Instruments INA169-Q1 Datasheet HTML 9Page - Texas Instruments INA169-Q1 Datasheet HTML 10Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 12 page
background image
INA139Q1,INA169Q1
SGLS185B − SEPTEMBER 2003 − REVISED OCTOBER 2004
www.ti.com
6
VOLTAGE GAIN
EXACT RL (Ω)
NEAREST 1% RL (Ω)
1
2
5
10
20
50
100
1k
2k
5k
10k
20k
50k
100k
1k
2k
4.99k
10k
20k
49k
100k
2
1
8
4
6
Figure 1. Basic Circuit Connections
BASIC CONNECTION
Figure 1 shows the basic connection of the INA139. The input pins, VIN+ and VIN−, should be connected as closely as possible
to the shunt resistor to minimize any resistance in series with the shunt resistance. The output resistor, RL, is shown connected
between pin 1 and ground. Best accuracy is achieved with the output voltage measured directly across RL. This is especially
important in high-current systems where load current could flow in the ground connections, affecting the measurement accuracy.
No power-supply bypass capacitors are required for stability of the INA139. However, applications with noisy or high-impedance
power supplies may require decoupling capacitors to reject power-supply noise; connect bypass capacitors close to the device
pins.
POWER SUPPLIES
The input circuitry of the INA139 can accurately measure beyond its power-supply voltage, V+. For example, the V+ power supply
can be 5 V, whereas the load power supply voltage is up to +36 V (or +60 V with the INA169). However, the output voltage range
of the OUT terminal is limited by the lesser of the two voltages (see the Output Voltage Range section).
SELECTING RS AND RL
The value chosen for the shunt resistor, RS , depends on the application and is a compromise between small-signal accuracy and
maximum permissible voltage loss in the measurement line. High values of RS provide better accuracy at lower currents by
minimizing the effects of offset, while low values of RS minimize voltage loss in the supply line. For most applications, best
performance is attained with an RS value that provides a full-scale shunt voltage range of 50 mV to 100 mV. Maximum input voltage
for accurate measurements is 500 mV.
RL is chosen to provide the desired full-scale output voltage. The output impedance of the INA139 OUT terminal is very high which
permits using values of RL up to 100 kΩ with excellent accuracy. The input impedance of any additional circuitry at the output should
be much higher than the value of RL to avoid degrading accuracy.
Some Analog-to-Digital (A/D) converters have input impedances that will significantly affect measurement gain. The input
impedance of the A/D converter can be included as part of the effective RL if its input can be modeled as a resistor to ground.
Alternatively, an op amp can be used to buffer the A/D converter input as shown in Figure 2. See Figure 1 for recommended values
of RL.


Similar Part No. - INA169-Q1

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
INA169-Q1 TI-INA169-Q1 Datasheet
1Mb / 16P
[Old version datasheet]   HIGH-SIDE MEASUREMENT CURRENT SHUNT MONITOR
INA169-Q1 TI1-INA169-Q1 Datasheet
950Kb / 25P
[Old version datasheet]   High-Side Measurement Current Shunt Monitor
More results

Similar Description - INA169-Q1

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
INA139 TI-INA139 Datasheet
200Kb / 11P
[Old version datasheet]   High-Side Measurement CURRENT SHUNT MONITOR
INA139-Q1 TI-INA139-Q1_15 Datasheet
1Mb / 16P
[Old version datasheet]   HIGH-SIDE MEASUREMENT CURRENT SHUNT MONITOR
INA139NA TI-INA139NA Datasheet
408Kb / 15P
[Old version datasheet]   High-Side Measurement CURRENT SHUNT MONITOR
INA138NA250G4 TI1-INA138NA250G4 Datasheet
422Kb / 15P
[Old version datasheet]   High-Side Measurement CURRENT SHUNT MONITOR
INA138-Q1 TI1-INA138-Q1 Datasheet
1Mb / 19P
[Old version datasheet]   HIGH-SIDE MEASUREMENT CURRENT SHUNT MONITOR
INA139 TI1-INA139_17 Datasheet
950Kb / 25P
[Old version datasheet]   High-Side Measurement Current Shunt Monitor
logo
Burr-Brown (TI)
INA138 BURR-BROWN-INA138 Datasheet
69Kb / 7P
   High-Side Measurement CURRENT SHUNT MONITOR
logo
Texas Instruments
INA138 TI1-INA138_14 Datasheet
1Mb / 27P
[Old version datasheet]   High-Side Measurement Current Shunt Monitor
INA138-Q1 TI-INA138-Q1_15 Datasheet
1Mb / 22P
[Old version datasheet]   HIGH-SIDE MEASUREMENT CURRENT SHUNT MONITOR
logo
Burr-Brown (TI)
INA138 BURR-BROWN-INA138_11 Datasheet
466Kb / 15P
   High-Side Measurement CURRENT SHUNT MONITOR
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com