Overview
The ADN2850BCPZ250-RL7, produced by Analog Devices Inc., is a dual-channel, nonvolatile memory, digitally controlled resistor. This device offers a 1024-step resolution and is designed to replace mechanical rheostats with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance. It operates with a single supply voltage of 2.7 V to 5 V or a dual supply voltage of ±2.5 V, making it versatile for various applications.
Key Specifications
| Parameter | Value | Comments |
|---|---|---|
| Nominal Resistance | 250 kΩ | |
| Resolution | 1024 positions | |
| Resistor Tolerance Error | ±8% | Maximum |
| Temperature Coefficient | 35 ppm/°C | |
| Supply Voltage | 2.7 V to 5 V (single supply), ±2.5 V (dual supply) | |
| Interface | SPI-compatible serial interface | |
| Nonvolatile Memory | Stores wiper settings, 26 bytes extra for user-defined information | |
| Programming Cycles | 1 million cycles | |
| Data Retention | 100 years typical | |
| Package | 16-LFCSP-WQ (5x5) |
Key Features
- Dual-channel operation with 1024-step resolution
- Low resistor tolerance error of ±8%
- Low temperature coefficient of 35 ppm/°C
- SPI-compatible serial interface for versatile programming
- Nonvolatile memory to store wiper settings and user-defined information
- Current monitoring configurable function
- Power-on refresh with EEMEM settings and permanent memory write protection
Applications
- SONET, SDH, ATM, Gigabit Ethernet
- DWDM laser diode driver and optical supervisory systems
- Mechanical rheostat replacement
- Instrumentation gain adjustment
- Programmable filters, delays, time constants
- Sensor calibration
Q & A
- What is the nominal resistance of the ADN2850BCPZ250-RL7?
The nominal resistance is 250 kΩ. - What is the resolution of the ADN2850BCPZ250-RL7?
The resolution is 1024 positions. - What is the maximum resistor tolerance error of the ADN2850BCPZ250-RL7?
The maximum resistor tolerance error is ±8%. - What is the temperature coefficient of the ADN2850BCPZ250-RL7?
The temperature coefficient is 35 ppm/°C. - What are the supply voltage options for the ADN2850BCPZ250-RL7?
The device can operate with a single supply voltage of 2.7 V to 5 V or a dual supply voltage of ±2.5 V. - What type of interface does the ADN2850BCPZ250-RL7 use?
The device uses an SPI-compatible serial interface. - How many programming cycles can the ADN2850BCPZ250-RL7 handle?
The device can handle 1 million programming cycles. - What is the typical data retention period for the ADN2850BCPZ250-RL7?
The typical data retention period is 100 years. - In what package is the ADN2850BCPZ250-RL7 available?
The device is available in a 16-LFCSP-WQ (5x5) package. - What are some common applications of the ADN2850BCPZ250-RL7?
Common applications include SONET, SDH, ATM, Gigabit Ethernet, DWDM laser diode drivers, optical supervisory systems, mechanical rheostat replacement, instrumentation gain adjustment, programmable filters, delays, time constants, and sensor calibration.
