Overview
The AD7293BCPZ, produced by Analog Devices Inc., is a highly integrated PA (Power Amplifier) drain current controller designed for comprehensive monitoring and control of current, voltage, and temperature. This device is particularly suited for applications requiring precise control and monitoring in power amplifier systems. It features a robust set of functionalities, including analog-to-digital converters (ADCs), digital-to-analog converters (DACs), high-side current sense amplifiers, and temperature sensors, all integrated into a single chip solution with an SPI-compatible interface.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| ADC Resolution | 12 bits | - | Successive Approximation Register (SAR) ADC |
| ADC Input Ranges | 0 V to 1.25 V, 0 V to 2.5 V, 0 V to 5 V | V | Pseudo Differential and Differential Ranges Available |
| DAC Resolution | 12 bits | - | Eight DACs (four bipolar and four unipolar) |
| DAC Output Ranges | 0 V to +5 V, −4 V to +1 V, −5 V to 0 V (bipolar); 0 V to 5 V, 2.5 V to 7.5 V, 5 V to 10 V (unipolar) | V | Configurable under external pin control |
| Current Sense Amplifiers | 4 high-side current sense amplifiers | - | ±0.1% gain error |
| Temperature Sensors | Internal temperature sensor ±1.25°C, 2 external temperature sensor inputs ±1.1°C | °C | - |
| Reference Voltage | 2.5 V on-chip reference | V | - |
| Interface | SPI-compatible interface with VDRIVE supporting 1.8 V, 3 V, and 5 V | - | - |
| Package | 56-lead LFCSP | - | - |
| Operating Temperature Range | −40°C to +125°C | °C | - |
Key Features
- Four independent closed-loop drain current controllers.
- Built-in monitoring, sequencing, and alert features.
- Compatible with both depletion mode and enhancement mode power amplifiers.
- Four uncommitted 12-bit ADC inputs with ±0.5 LSB typical integral nonlinearity (INL).
- Eight 12-bit DACs with fast settling time (1.3 µs maximum).
- High-side voltage current sensing with adjustable gain.
- Internal and external temperature sensing capabilities.
- Flexible monitoring and control ranges for ADC and DAC inputs.
- SPI-compatible interface with support for various voltage levels.
Applications
- GaN and GaAs power amplifier monitoring and control.
- Base station power amplifiers.
- General-purpose system monitoring and control.
Q & A
- What is the primary function of the AD7293BCPZ?
The AD7293BCPZ is a PA drain current controller designed for monitoring and controlling current, voltage, and temperature in power amplifier systems. - What type of ADC does the AD7293BCPZ feature?
The AD7293BCPZ features a 12-bit successive approximation register (SAR) ADC. - How many DACs are included in the AD7293BCPZ?
The device includes eight 12-bit DACs, with four bipolar and four unipolar DACs. - What are the temperature sensing capabilities of the AD7293BCPZ?
The device has an internal temperature sensor with ±1.25°C accuracy and two external temperature sensor inputs with ±1.1°C accuracy. - What is the operating temperature range of the AD7293BCPZ?
The operating temperature range is −40°C to +125°C. - What interface does the AD7293BCPZ use for communication?
The device uses an SPI-compatible interface with support for 1.8 V, 3 V, and 5 V voltage levels. - What are some common applications of the AD7293BCPZ?
Common applications include GaN and GaAs power amplifier monitoring and control, base station power amplifiers, and general-purpose system monitoring and control. - How many current sense amplifiers are included in the AD7293BCPZ?
The device includes four high-side current sense amplifiers with ±0.1% gain error. - What is the package type of the AD7293BCPZ?
The device is packaged in a 56-lead LFCSP. - Does the AD7293BCPZ support both depletion and enhancement mode power amplifiers?
Yes, the AD7293BCPZ is compatible with both depletion mode and enhancement mode power amplifiers.
