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Package Cooled:3000
Part Number: AD5170
Package Cooled: 3000
Description: The AD5170 is a 256-position, two-time programmable (TTP) digital potentiometer* that employs fuse link technolog...
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AD5170
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DataSheet
General Description
AD5170 General Description
The AD5170 is a 256-position, two-time programmable (TTP) digital potentiometer* that employs fuse link technology to enable two opportunities at permanently programming the resistance setting. OTP is a cost-effective alternative to EEMEM for users who do not need to program the digital potentiometer setting in memory more than once. This device performs the same electronic adjustment function as mechanical potentiometers or variable resistors with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.
The AD5170 is programmed using a 2-wire, I2C compatible digital interface. Unlimited adjustments are allowed before permanently (there are actually two opportunities) setting the resistance value. During OTP activation, a permanent blow fuse command freezes the wiper position (analogous to placing epoxy on a mechanical trimmer). Unlike traditional OTP digital potentiometers, the AD5170 has a unique temporary OTP overwrite feature that allows for new adjustments even after the fuse has been blown. However, the OTP setting is restored during subsequent power-up conditions. This feature allows users to treat these digital potentiometers as volatile potentiometers with a programmable preset.
AD5170 Maximum Ratings
VDD to GND 0.3 V to +7 V
VA, VB, VW to GND VDD
Terminal Current, AxBx, AxWx, BxWx1
Pulsed ±20 mA
Continuous ±5 mA
Digital Inputs and Output Voltage to GND 0 V to 7 V
Operating Temperature Range 40°C to +125°C
Maximum Junction Temperature (TJMAX) 150°C
Storage Temperature 65°C to +150°C
Lead Temperature (Soldering, 10 sec) 300°C
Thermal Resistance2JA: MSOP-10 230°C/W
VA, VB, VW to GND VDD
Terminal Current, AxBx, AxWx, BxWx1
Pulsed ±20 mA
Continuous ±5 mA
Digital Inputs and Output Voltage to GND 0 V to 7 V
Operating Temperature Range 40°C to +125°C
Maximum Junction Temperature (TJMAX) 150°C
Storage Temperature 65°C to +150°C
Lead Temperature (Soldering, 10 sec) 300°C
Thermal Resistance2JA: MSOP-10 230°C/W
AD5170 Features
256-position
TTP (two-time programmable) set-and-forget resistance
setting allows second-chance permanent programming
Unlimited adjustments prior to OTP (one-time programming) activation
OTP overwrite allows dynamic adjustments with user defined preset
End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
Compact MSOP-10 (3 mm * 4.9 mm) package
Fast settling time: tS = 5 µs typ in power-up
Full read/write of wiper register
Power-on preset to midscale
Extra package address decode pins AD0 and AD1
Single supply 2.7 V to 5.5 V
Low temperature coefficient: 35 ppm/°C
Low power, IDD = 6 µA max
Wide operating temperature: 40°C to +125°C
Evaluation board and software are available
Software replaces µC in factory programming applications
TTP (two-time programmable) set-and-forget resistance
setting allows second-chance permanent programming
Unlimited adjustments prior to OTP (one-time programming) activation
OTP overwrite allows dynamic adjustments with user defined preset
End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
Compact MSOP-10 (3 mm * 4.9 mm) package
Fast settling time: tS = 5 µs typ in power-up
Full read/write of wiper register
Power-on preset to midscale
Extra package address decode pins AD0 and AD1
Single supply 2.7 V to 5.5 V
Low temperature coefficient: 35 ppm/°C
Low power, IDD = 6 µA max
Wide operating temperature: 40°C to +125°C
Evaluation board and software are available
Software replaces µC in factory programming applications
AD5170 Typical Application
Systems calibration
Electronics level setting
Mechanical Trimmers® replacement in new designs
Permanent factory PCB setting
Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
RF amplifier biasing
Automotive electronics adjustment
Gain control and offset adjustment
Electronics level setting
Mechanical Trimmers® replacement in new designs
Permanent factory PCB setting
Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
RF amplifier biasing
Automotive electronics adjustment
Gain control and offset adjustment
AD5170 Connection Diagram
AD5170
PDF/DataSheet Download
- Datasheet: AD5170
- File Size: 892983 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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