Overview
The ADN2850BCPZ250, produced by Analog Devices Inc., is a dual-channel, nonvolatile memory, digitally controlled resistor. This device offers 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 either a 2.7 V to 5 V single supply or a ±2.5 V dual supply, making it versatile for various applications. The ADN2850BCPZ250 stores wiper settings in nonvolatile memory, ensuring that the device retains its configuration even after power is turned off.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Nominal Resistance | 250 kΩ | Ohms |
| Number of Positions | 1024 | - |
| Resistor Tolerance Error | ±8% | - |
| Temperature Coefficient | 35 ppm/°C | - |
| Supply Voltage | 2.7 V to 5 V (single), ±2.5 V (dual) | Volt |
| Interface | SPI-compatible serial interface | - |
| Memory Type | Nonvolatile memory | - |
| Operating Temperature | -40°C to +85°C | °C |
| Package Type | 16-Lead LFCSP (5mm x 5mm w/ EP) | - |
| Programming Cycles | 1 million | - |
| Data Retention | 100 years typical | - |
Key Features
- Dual-channel, 1024-position resolution
- Maximum ±8% nominal resistor tolerance error
- Low temperature coefficient: 35 ppm/°C
- 2.7 V to 5 V single supply or ±2.5 V dual supply
- Current monitoring configurable function
- SPI-compatible serial interface
- Nonvolatile memory stores wiper settings
- Power-on refreshed with EEMEM settings
- Permanent memory write protection
- 26 bytes extra nonvolatile memory for user-defined information
Applications
- SONET, SDH, ATM, Gigabit Ethernet, DWDM laser diode driver, 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?
The nominal resistance of the ADN2850BCPZ250 is 250 kΩ.
- How many positions does the ADN2850BCPZ250 have?
The ADN2850BCPZ250 has 1024 positions.
- What is the resistor tolerance error of the ADN2850BCPZ250?
The resistor tolerance error is ±8%.
- What is the temperature coefficient of the ADN2850BCPZ250?
The temperature coefficient is 35 ppm/°C.
- What are the supply voltage options for the ADN2850BCPZ250?
The device can operate with a 2.7 V to 5 V single supply or a ±2.5 V dual supply.
- What type of interface does the ADN2850BCPZ250 use?
The ADN2850BCPZ250 uses an SPI-compatible serial interface.
- What type of memory does the ADN2850BCPZ250 use to store wiper settings?
The device uses nonvolatile memory to store wiper settings.
- What is the operating temperature range of the ADN2850BCPZ250?
The operating temperature range is -40°C to +85°C.
- How many programming cycles can the ADN2850BCPZ250 handle?
The device can handle 1 million programming cycles.
- What is the typical data retention period for the ADN2850BCPZ250?
The typical data retention period is 100 years.
