MAX2035 Datasheet – Ultrasound Variable Gain Amplifier

Part Number: MAX2035

Function: Ultrasound Variable Gain Amplifier

Package: 100-pin TQFP Type

Manufacturer: Maxim Integrated


MAX2035 datasheet



The MAX2035 8-channel variable-gain amplifier (VGA) is designed for high linearity, high dynamic range, and low-noise performance targeting ultrasound imaging and Doppler applications. Each amplifier features differential inputs and outputs and a total gain range of typically 50dB. In addition, the VGAs offer very low output-referred noise performance suitable for interfacing with 10-bit ADCs. The MAX2035 VGA is optimized for less than ±0.5dB absolute gain error to ensure minimal channel-to-chan nel ultrasound beamforming focus error. The device’s differential outputs are designed to directly drive ultra sound ADCs through an external passive anti-aliasing filter.

A switchable clamp is also provided at each amplifier’s outputs to limit the output signals, thereby  revent ing ADC overdrive or saturation. Dynamic performance of the device is optimized to reduce  istortion to support second-harmonic imaging. The device achieves a second-harmonic distortion  pecification of -62dBc at VOUT= 1.5VP-Pand fIN =5MHz, and an ultrasound-specific- two-tone third-order intermodulation distortion specification of -52dBc at VOUT= 1.5VP-Pand fIN = 5MHz. The  AX2035 operates from a +5.0V power supply, consuming only 127mW/channel. The device is available in a 100-pin TQFP package with an exposed pad. Electrical performance is guaranteed over a 0°C to
+70°C temperature range.


1. 8-Channel Configuration
2. High Integration for Ultrasound Imaging Applications
3. Pin Compatible with the MAX2036 Ultrasound VGA Plus CW Doppler Beamformer
4. Maximum Gain, Gain Range, and Output-Referred Noise Optimized for Interfacing with 10-Bit ADCs
(1) Maximum Gain of 39.5dB
(2) Total Gain Range of 50dB
(3) 60nV/√HzUltra-Low Output-Referred Noise at 5MHz
(4) Pin-for-Pin 12-Bit Compatibility Supported By MAX2037/MAX2038
5. ±0.5dB Absolute Gain Error
6. Switchable Output VGA Clamp Eliminating ADC Overdrive
7. Fully Differential VGA Outputs for Direct ADC Drive
8. Variable Gain Range Achieves 50dB Dynamic Range
9. -62dBc HD2 at VOUT= 1.5VP-Pand fIN = 5MHz
10.Two-Tone Ultrasound-Specific- IMD3 of -52dBc at VOUT= 1.5VP-Pand fIN = 5MHz
11. 127mW Consumption per Channel

Other data sheets are available within the file: MAX2035CCQ+D ,MAX2035CCQ+TD, MAX2035CCQ-D, MAX2035CCQ-TD

MAX2035 Datasheet PDF Download

MAX2035 pdf