Programmable gain amplifier PGA for Industrial process control and low power sensors

Overview

The high-performance PGA is highly integrable with our 24b ADC IP and hence can be combined to form a programmable gain Analog front end for precision application. The high-performance PGA can be programmed to have a gain of 1, 2, 4, 8, 16, 32, 64, or 128. The PGA consists of two stages. For a gain of 1, both stages are bypassed. For gains of 2 to 8, a single stage is used, whereas for gains greater than 8, both stages are used. The analog input range is ±VREF/gain

Key Features

Programmed to have a gain of 1, 2, 4, 8, 16, 32, 64, or 128
Suitable for forming complete AFE by combining with Vervesemi 24b ADC and work up-to 19,200 SPS
RMS noise

High power mode

0.92uV at 10SPS using SINC4 filter at gain=1
0.72uV at 10SPS using SINC3 filter at gain=1
11.2uV at 19.2Ksps using SINC4 at gain =128
22.8uV at 19.2Ksps using SINC4 at gain =128

Mid power mode

1.76uV at 10SPS using SINC4 filter at gain=1
1.5uV at 10SPS using SINC3 filter at gain=1
10.4uV at 4.8Ksps using SINC4 at gain =128
22.5uV at 4.8Ksps using SINC3 at gain =128

Low power mode

2.6uV at 10SPS using SINC4 filter at gain=1
2.25uV at 10SPS using SINC4 filter at gain=1
10.4uV at 2.4Ksps using SINC4 at gain =128
22.8uV at 2.4Ksps using SINC3 at gain =128

Power Supply:

ANALOG (AVDD) = Unipolar(5V) or Bipolar(±2.5V)
DIGITAL (DVDD) = 1.65V to 3.6 V

-40C to 125C operating temperature range
Technology: SMIC 180nm

Benefits

Ultra-low power delta sigma ADC
High performance up-to 124dB dynamic range
Industry best IP specifications

Applications

Low power Sensor measurement
Industrial Process Control
Scientific Instrumentation
Medical

Deliverables

Datasheet
Hard Macro (GDSII)
Characterisation Report (as applicable)
Abstract View (LEF)
Integration and Customer Support

Technical Specifications

Foundry, Node

180nm

Maturity

Silicon validated

Availability

June 2019

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