Calculation tool
PGA849-CALC — PGA849 Input and Output Range Calculator
Excel based calculator tool to provide user friendly, visual interface to support customer calculate inout and out range of the PGA849 based on user inputs of Supply voltage.
Data sheet
PGA849
- Differential to single-ended conversion
- Eight pin-programmable binary gains
- G (V/V) = ⅛, ¼, ½, 1, 2, 4, 8, and 16
- Low gain error drift: 2ppm/°C (max)
- Faster signal processing:
- Wide bandwidth: 10MHz at all gains
- High slew rate: 35V/µs
- Settling time: 500ns to 0.01%, 950ns to 0.0015%
- Input stage noise: 7.8nV/√Hz at G = 16V/V
- Filter option to achieve better SNR
- Input overvoltage protection to ±40V beyond supplies
- Input-stage supply range:
- Single supply: 8V to 36V
- Dual supply: ±4V to ±18V
- Independent output power-supply pins
- Output-stage supply range:
- Single supply: 4.5V to 36V
- Dual supply: ±2.25V to ±18V
- Specified temperature range: –40°C to +125°C
- Small package: 3mm × 3mm QFN
The PGA849 is a wide-bandwidth, low-noise programmable gain instrumentation amplifier for differential-to-single-ended conversion. The PGA849 is equipped with eight binary gain settings, from an attenuating gain of 0.125V/V to a maximum of 16V/V, using three digital gain selection pins.
The PGA849 architecture is optimized to drive inputs of high-resolution, precision analog-to-digital converters (ADCs) with sampling rates up to 1MSPS without the need for an additional ADC driver. The output-stage power supplies are decoupled from the input stage to protect the ADC or downstream device against overdrive damage.
The super-beta input transistors offer an impressively low input bias current, which in turn provides a very low input current noise density of 0.3pA/√Hz, making the PGA849 a versatile choice for virtually any sensor type. The low-noise current-feedback front-end architecture offers exceptional gain flatness even at high frequencies, making the PGA849 an excellent high-impedance sensor readout device. Integrated protection circuitry on the input pins handles overvoltages of up to ±40V beyond the power-supply voltages.
Technical documentation
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View all 4 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | PGA849 Low-Noise, Wide-Bandwidth, Precision Programmable Gain Instrumentation Amplifier datasheet | PDF | HTML | 29 Mar 2024 |
| Product overview | PGA855 and PGA849 Product Overview (Rev. A) | PDF | HTML | 11 Jul 2024 | |
| Application note | Achieve High SNR with the PGA855, Fully Differential Programmable-Gain Amplifier | PDF | HTML | 21 Mar 2024 | |
| EVM User's guide | PGA849 Evaluation Module User's Guide | PDF | HTML | 20 Mar 2024 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
PGA849EVM — PGA849 evaluation module
The PGA849EVM provides access to the features and measures the performance of the PGA849 device. The PGA849 is a precision, wide-bandwidth programmable gain instrumentation amplifier (PGA) for differential to single-ended conversion optimized to drive high-performance analog-to-digital converters (...)
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
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User guide: PDF
Reference designs
TIDA-010945 — Precision signal chain for digital multimeters reference design
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Design guide: PDF
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RGT) | 16 | Ultra Librarian |
Ordering & quality
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Support & training
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