SBOSAG3 March 2024 PGA849
ADVANCE INFORMATION
- 1
- 1 Features
- 2 Applications
- 3 Description
- 4 Device Comparison Table
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Device and Documentation Support
- 10Revision History
- 11Mechanical, Packaging, and Orderable Information
Package Options
Refer to the PDF data sheet for device specific package drawings
Mechanical Data (Package|Pins)
- RGT|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information
7.3.1 Gain Control
The PGA849 uses three pins to set the amplifier gain. These gain select pins are set with respect to DGND. This configuration simplifies design when compared to programmable-gain amplifiers requiring an SPI or other digital interface options for gain changes. Figure 7-1 shows the gain-setting block diagram. Table 7-2 lists the gain options. Any gain select pin that is not driven by an external source is automatically biased at DGND using internal pulldown options.
Figure 7-1 PGA849 Gain Setting Block Diagram
Table 7-1 Gain Options
| A2:A0 | GAIN |
|---|---|
| 000 | 0.125 |
| 001 | 0.25 |
| 010 | 0.5 |
| 011 | 1 |
| 100 | 2 |
| 101 | 4 |
| 110 | 8 |
| 111 | 16 |