Overview
The AD8285WBCPZ, produced by Analog Devices Inc., is a highly integrated radar receive path analog front-end (AFE) designed for low cost, low power, compact size, flexibility, and ease of use. This device features four channels of a low noise preamplifier (LNA), a programmable gain amplifier (PGA), and an antialiasing filter (AAF), along with one direct-to-ADC channel, all integrated with a single 12-bit analog-to-digital converter (ADC). It is optimized for dynamic performance and low power consumption, making it ideal for applications where small package size is critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | - |
| ADC Resolution | 12 bits | - |
| Maximum Sample Rate | 72 MSPS | - |
| Gain Range | 16 dB to 34 dB (in 6 dB steps) | - |
| Signal-to-Noise Ratio (SNR) | 68.5 dB | - |
| Spurious-Free Dynamic Range (SFDR) | 68 dB at gain = 16 dB | - |
| Input Referred Noise Voltage | 3.5 nV/√Hz at maximum gain | - |
| Power Consumption per Channel | 185 mW at 12 bits and 72 MSPS | - |
| Package Type | 72-lead LFCSP (10x10mm, 8.5mm exposed pad) | - |
| Operating Temperature Range | −40°C to +105°C | - |
Key Features
- Four channels of low noise preamplifier (LNA), programmable gain amplifier (PGA), and antialiasing filter (AAF)
- One direct-to-ADC channel integrated with a single 12-bit analog-to-digital converter (ADC)
- Programmable gain from 16 dB to 34 dB in 6 dB steps
- Programmable third-order, low-pass elliptic filter (LPF) from 1.0 MHz to 12.0 MHz
- Serial peripheral interface (SPI) for programmable gain and other settings
- Low power consumption: 185 mW per channel at 12 bits and 72 MSPS
- Low noise: 3.5 nV/√Hz maximum of input referred voltage noise
- Fabricated in an advanced CMOS process
- RoHS compliant, 72-lead LFCSP package
Applications
- Automotive radar systems
- Adaptive cruise control
- Collision avoidance
- Blind spot detection
- Self-parking systems
- Electronic bumper systems
Q & A
- What is the primary function of the AD8285WBCPZ?
The AD8285WBCPZ is a radar receive path analog front-end (AFE) that integrates four channels of a low noise preamplifier (LNA), a programmable gain amplifier (PGA), an antialiasing filter (AAF), and a direct-to-ADC channel with a 12-bit ADC.
- What is the maximum sample rate of the AD8285WBCPZ?
The maximum sample rate of the AD8285WBCPZ is 72 MSPS.
- What is the gain range of the PGA in the AD8285WBCPZ?
The gain range of the PGA is from 16 dB to 34 dB in 6 dB increments.
- What is the input referred noise voltage of the AD8285WBCPZ?
The input referred noise voltage is 3.5 nV/√Hz at maximum gain.
- What is the power consumption per channel of the AD8285WBCPZ?
The power consumption per channel is 185 mW at 12 bits and 72 MSPS.
- What is the operating temperature range of the AD8285WBCPZ?
The operating temperature range is from −40°C to +105°C.
- What type of package does the AD8285WBCPZ come in?
The AD8285WBCPZ comes in a 72-lead LFCSP package (10x10mm, 8.5mm exposed pad).
- Is the AD8285WBCPZ RoHS compliant?
Yes, the AD8285WBCPZ is RoHS compliant.
- What are some common applications of the AD8285WBCPZ?
Common applications include automotive radar systems, adaptive cruise control, collision avoidance, blind spot detection, self-parking systems, and electronic bumper systems.
- How is the gain of the AD8285WBCPZ programmed?
The gain is programmed using a serial peripheral interface (SPI).
