Overview
The AD8285WBCPZ-RL, produced by Analog Devices Inc., is a highly integrated radar receive path analog front-end (AFE) IC. It is designed for low cost, low power, compact size, flexibility, and ease of use. The device features four channels of a low noise preamplifier (LNA) with a programmable gain amplifier (PGA) and an antialiasing filter (AAF), along with one direct-to-ADC channel. All these components are integrated with a single 12-bit analog-to-digital converter (ADC). This IC is particularly optimized for dynamic performance and low power consumption, making it ideal for applications where a small package size is critical.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| ADC Resolution | - | 12 Bits | - | - |
| Maximum Sample Rate | - | 72 MSPS | - | - |
| Signal-to-Noise Ratio (SNR) | - | 68.5 dB | - | - |
| Signal-to-Noise and Distortion (SINAD) | - | 66 dB | - | - |
| Differential Nonlinearity (DNL) | - | 1 LSB | - | - |
| Integral Nonlinearity (INL) | - | 10 LSB | - | - |
| Effective Number of Bits (ENOB) | - | 10.67 | - | - |
| Input Referred Noise Voltage | - | 3.5 nV/√Hz | - | - |
| Power Dissipation per Channel | - | 185 mW | - | - |
| Power-Down Dissipation | - | 5 mW | - | - |
| Operating Temperature Range | -40°C | - | 105°C | - |
| Package Type | - | 72-lead LFCSP (10x10mm) | - | - |
Key Features
- Four channels of low noise preamplifier (LNA) with programmable gain amplifier (PGA) and antialiasing filter (AAF)
- One direct-to-ADC channel
- Integrated 12-bit analog-to-digital converter (ADC) with up to 72 MSPS conversion rate
- Programmable gain range of 16 dB to 34 dB in 6 dB increments
- Low input referred noise voltage of 3.5 nV/√Hz at maximum gain
- Low power consumption: 185 mW per channel at 12 bits and 72 MSPS
- Serial peripheral interface (SPI) for programmable gain and other settings
- Antialiasing filter (AAF) with programmable third-order, low-pass elliptic filter (LPF) from 1.0 MHz to 12.0 MHz
- RoHS compliant, 72-lead LFCSP package (10x10mm)
- Specified over the automotive temperature range of −40°C to +105°C
Applications
- Automotive radar systems
- Adaptive cruise control
- Collision avoidance systems
- Blind spot detection
- Self-parking systems
- Electronic bumper systems
Q & A
- What is the primary function of the AD8285WBCPZ-RL?
The AD8285WBCPZ-RL is a radar receive path analog front-end (AFE) IC, integrating four channels of LNA, PGA, and AAF with a 12-bit ADC.
- What is the maximum sample rate of the AD8285WBCPZ-RL?
The maximum sample rate is up to 72 MSPS.
- What is the input referred noise voltage of the AD8285WBCPZ-RL?
The input referred noise voltage is 3.5 nV/√Hz at maximum gain.
- What is the power consumption per channel of the AD8285WBCPZ-RL?
The power consumption per channel is 185 mW at 12 bits and 72 MSPS.
- What is the operating temperature range of the AD8285WBCPZ-RL?
The operating temperature range is from −40°C to +105°C.
- What type of package does the AD8285WBCPZ-RL come in?
The AD8285WBCPZ-RL comes in a 72-lead LFCSP package (10x10mm).
- What are some common applications of the AD8285WBCPZ-RL?
Common applications include automotive radar, adaptive cruise control, collision avoidance, blind spot detection, self-parking, and electronic bumper systems.
- How is the gain of the PGA in the AD8285WBCPZ-RL controlled?
The gain of the PGA is controlled via a serial peripheral interface (SPI).
- What is the resolution of the ADC in the AD8285WBCPZ-RL?
The ADC resolution is 12 bits.
- Is the AD8285WBCPZ-RL RoHS compliant?
Yes, the AD8285WBCPZ-RL is RoHS compliant.
