Overview
The AD9273BSVZ-25, produced by Analog Devices Inc., is a highly integrated, low-power, and compact analog-to-digital converter (ADC) system. This device is designed for applications requiring multiple channels of signal processing with low noise, high dynamic range, and flexible configuration. It contains eight channels of a low noise preamplifier (LNA), a variable gain amplifier (VGA), an antialiasing filter (AAF), and a 12-bit ADC. Each channel is optimized for dynamic performance and low power consumption, making it ideal for use in medical imaging, ultrasound, and automotive radar systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| LNA Gain (Single-ended input to differential output) | 15.6/17.9/21.3 | 15.6/17.9/21.3 | 15.6/17.9/21.3 | dB | |
| LNA Input-referred Noise Voltage | Gain = 21.3 dB | 1.26 nV/√Hz | nV/√Hz | ||
| VGA Gain Range | -6 dB to +24 dB | dB | |||
| AAF Cutoff Frequency | 8 MHz to 18 MHz | MHz | |||
| ADC Resolution and Sample Rate | 12 bits, 10 MSPS to 50 MSPS | ||||
| Power Consumption per Channel | 12 bits/40 MSPS (TGC) | 109 mW | mW | ||
| Package Type | 100-Lead TQFP (14mm x 14mm) | ||||
| Operating Temperature Range | -40°C to 85°C | °C |
Key Features
- Eight channels of LNA, VGA, AAF, and ADC for comprehensive signal processing.
- Low noise preamplifier (LNA) with input-referred noise voltage of 1.26 nV/√Hz at a gain of 21.3 dB.
- Variable gain amplifier (VGA) with a gain range of -6 dB to +24 dB and linear-in-dB gain control.
- Programmable antialiasing filter (AAF) with a 2nd-order low-pass filter cutoff from 8 MHz to 18 MHz.
- 12-bit ADC with sample rates from 10 MSPS to 50 MSPS.
- Includes an 8 × 8 differential crosspoint switch for continuous wave (CW) Doppler applications.
- Low power consumption: 109 mW per channel at 12 bits/40 MSPS (TGC) and 70 mW per channel in CW Doppler mode.
- Flexible power-down modes and fast recovery from low power standby mode (<2 μs).
- Overload recovery in less than 10 ns.
- Serial LVDS (ANSI-644, IEEE 1596.3 reduced range link) data and frame clock outputs.
Applications
- Medical imaging and ultrasound systems, where high dynamic range and low noise are critical.
- Automotive radar systems, requiring multiple channels of signal processing with low power consumption.
Q & A
- What is the primary function of the AD9273BSVZ-25?
The AD9273BSVZ-25 is an octal-channel ADC system that includes low noise preamplifiers (LNA), variable gain amplifiers (VGA), antialiasing filters (AAF), and 12-bit ADCs, designed for low-power and high-dynamic-range applications.
- What is the input-referred noise voltage of the LNA?
The input-referred noise voltage of the LNA is typically 1.26 nV/√Hz at a gain of 21.3 dB.
- What is the gain range of the VGA?
The VGA has a gain range of -6 dB to +24 dB with linear-in-dB gain control.
- What are the programmable frequencies of the AAF?
The AAF is programmable from 8 MHz to 18 MHz.
- What is the resolution and sample rate of the ADC?
The ADC has a resolution of 12 bits and a sample rate range of 10 MSPS to 50 MSPS.
- How much power does each channel consume?
Each channel consumes 109 mW at 12 bits/40 MSPS (TGC) and 70 mW in CW Doppler mode.
- What type of package does the AD9273BSVZ-25 use?
The AD9273BSVZ-25 is packaged in a 100-Lead TQFP (14mm x 14mm).
- What is the operating temperature range of the AD9273BSVZ-25?
The operating temperature range is -40°C to 85°C.
- What applications is the AD9273BSVZ-25 suited for?
The AD9273BSVZ-25 is suited for medical imaging, ultrasound, and automotive radar applications.
- Does the AD9273BSVZ-25 support continuous wave (CW) Doppler applications?
