My Inquiry
My Account
Texas Instruments PGA203KPG4
- Part No.:
- PGA203KPG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
PGA203KPG4.pdf
- Description:
- IC INST AMP 1 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,944
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PGA203KPG4 from Texas Instruments (originally Burr-Brown) is a digitally programmable instrumentation amplifier with binary-selectable gains of 1, 2, 4, and 8. It features FET inputs, laser-trimmed gain/offset, 50 pA max input bias current, 2 µs settling time to 0.01%, and operates from ±6 V to ±18 V supplies. It is used in auto-ranging data acquisition front-ends where precision, speed, and low input current are critical.
For engineers reviewing the PGA203KPG4 datasheet, PGA203KPG4 pinout, PGA203KPG4 application, or PGA203KPG4 equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with functional and selection guidance.
Technical Context
The PGA203KPG4 implements a differential transconductance front end with four parallel FET-input stages, each laser-trimmed for offset and gain. Gain selection uses 2-bit TTL/CMOS-compatible digital inputs (A0/A1) referenced to a dedicated Digital Common pin, enabling microprocessor-controlled gain switching without external components.
Its output stage is a differential transimpedance amplifier with output sense (pin 11) and reference (pin 4) terminals, supporting remote load sensing and buffered output filtering via external capacitors on pins 5 and 10. Bandwidth remains nearly constant across gain settings due to its transconductance architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Options | Binary-selectable: 1×, 2×, 4×, 8× - enables precise dynamic range scaling without analog trimming. |
| Input Bias Current | 50 pA max at +25°C - ensures negligible voltage error with high-impedance sources (e.g., thermocouples, piezoelectric sensors). |
| Settling Time | 2 µs to 0.01% - supports rapid gain changes in multiplexed DAQ systems with minimal dead time. |
| CMRR | 80 dB min at G = 1 - maintains signal integrity in noisy industrial environments with common-mode interference. |
| Supply Range | ±6 V to ±18 V - allows operation from standard dual-rail lab supplies or industrial ±15 V rails. |
| Input Offset Voltage | ±(2 + 24/G) mV max (0°C to +70°C) - laser-trimmed for use without external nulling circuitry. |
| Nonlinearity | 0.012% max - preserves measurement fidelity in precision sensor conditioning and calibration loops. |
Pinout & Package
PGA203KPG4 is housed in a 14-pin plastic DIP (PDIP-N) package, rated for 0°C to +70°C operation, with through-hole mounting and industry-standard 0.3" wide body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | Digital Input A0, A1 | 2-bit binary gain select lines; TTL/CMOS compatible; referenced to Pin 14 (Digital Common). |
| 3, 4 | +VIN, VREF | Differential input positive; reference node for gain-setting network - any resistance here causes gain error. |
| 5, 10 | Filter A, Filter B | Internal summing node access points - adding matched capacitors lowers bandwidth to reduce noise. |
| 6, 9 | VADJ, Sense | Offset adjust (pin 6); output sense feedback (pin 9) - enables IR-drop compensation at remote loads. |
| 7, 8, 13 | –VCC, +VCC, –VIN | Negative supply, positive supply, differential input negative - requires local 1 µF tantalum decoupling. |
| 11, 12, 14 | VOUT, OS, Digital Common | Main output; output offset adjust; return for digital logic - must be short and low-impedance to avoid CMR degradation. |
Key Features
| Feature | Design Value |
|---|---|
| FET-input transconductance architecture | Maintains ~1 MHz bandwidth across all gains (G < 1000), eliminating gain-dependent bandwidth trade-offs in DAQ channel design. |
| Laser-trimmed gain and offset | Enables direct connection to ADCs without external calibration components - reduces BOM count and layout area. |
| Dedicated Digital Common pin (Pin 14) | Isolates logic ground noise from analog ground paths - prevents digital switching transients from modulating gain accuracy. |
| Output sense (Pin 11) and VREF (Pin 4) | Supports 4-wire remote sensing to eliminate PCB trace resistance errors - critical for high-accuracy load monitoring. |
| Internal diode-clamped analog inputs | Allows simple RC input filtering without risk of latch-up - simplifies ESD protection and anti-aliasing design. |
Applications
| Data Acquisition Front-End | Auto-Ranging Instrumentation |
|---|---|
Use Scenario: Multiplexed sensor array (e.g., strain gauges, RTDs) feeding a 16-bit SAR ADC in an industrial PLC. IC Role / Device Role / Timing Role: Programmable-gain instrumentation amplifier providing gain switching synchronized with channel scan timing. Use Value: 2 µs settling enables full-scale step response within one ADC conversion cycle at 100 kSPS, eliminating inter-channel crosstalk. | Use Scenario: Benchtop multimeter measuring signals from 100 µV to 10 V full-scale with single ADC range. IC Role / Device Role / Timing Role: Core gain-scaling element in closed-loop auto-ranging circuit controlled by comparator and up/down counter. Use Value: Binary gain steps (1/2/4/8×) match typical decade-scaling requirements while minimizing control logic complexity. |
| Remote Sensor Signal Conditioning | Low-Noise Differential Amplifier Stage |
Use Scenario: Thermocouple measurement over 10 m twisted-pair cable in factory-floor environment. IC Role / Device Role / Timing Role: First-stage signal conditioner with remote output sensing to compensate for cable voltage drop. Use Value: Output sense (Pin 11) and VREF (Pin 4) eliminate up to 100 mΩ of series resistance error - improves absolute accuracy by >0.1%. | Use Scenario: Low-noise preamplifier for MEMS microphone or hydrophone with 100 dB dynamic range requirement. IC Role / Device Role / Timing Role: Primary gain block before anti-alias filter and ADC, leveraging low 12 nV/√Hz input noise density. Use Value: 0.012% nonlinearity and 80 dB CMRR preserve harmonic integrity in audio-band signal chains up to 10 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable-gain instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA2332AP | Fixed gain (10×, 100×); no digital gain control; rail-to-rail output; lower quiescent current (1.1 mA). | Suitable only for static-gain sensor interfaces; lacks auto-ranging capability of PGA203KPG4. | Select when gain is fixed and power budget is constrained; not a functional replacement for digital gain switching. |
| PGA205AU | Same pinout and gain options (1/2/4/8×); improved specs - 0.002% nonlinearity, 1 µs settling, wider temp range (–40°C to +85°C). | Drop-in upgrade path for new designs requiring higher precision and extended temperature support. | Prefer PGA205AU for new designs needing tighter linearity and faster settling; PGA203KPG4 remains valid for legacy cost-sensitive commercial-range applications. |
Compared with INA2332AP, PGA203KPG4 provides essential digital gain control for dynamic range adaptation, while PGA205AU offers a direct performance upgrade with identical interface and pin compatibility - making it the preferred migration path where enhanced accuracy and speed are required.
Availability
PGA203KPG4 is available at Aetrix Electronics and suitable for data acquisition systems, auto-ranging test equipment, and remote instrumentation requiring stable component supply across commercial temperature grades.
Supply support for PGA203KPG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments (TI) is a global semiconductor leader specializing in analog and embedded processing technologies, with deep heritage in precision amplifiers dating to Burr-Brown's acquisition in 2000.
The PGA203KPG4 belongs to TI's legacy programmable-gain instrumentation amplifier product line, designed specifically for high-accuracy, microprocessor-controlled signal conditioning in data acquisition and automated test equipment.
FAQ
What gain options does the PGA203KPG4 support, and how are they selected?
The PGA203KPG4 supports binary-selectable gains of 1×, 2×, 4×, and 8×, controlled by two TTL/CMOS-compatible digital inputs (A0 and A1) referenced to the Digital Common pin (Pin 14). The gain is set per Table I in the datasheet: A1A0 = 00 → G = 1, 01 → G = 2, 10 → G = 4, 11 → G = 8. No external resistors or calibration are needed - gain is laser-trimmed to ≤0.05% error at +25°C. This makes PGA203KPG4 ideal for microcontroller-driven gain sequencing in DAQ systems.
Does the PGA203KPG4 require external components for basic operation?
No, the PGA203KPG4 is designed for stand-alone operation: gain and offset are laser-trimmed, eliminating need for external nulling or gain-setting resistors. However, best practice requires 1 µF tantalum decoupling capacitors on both ±VCC pins (7 and 8), short low-impedance traces for VREF (Pin 4) and Sense (Pin 11), and a return path (e.g., 1 MΩ) for input bias current on floating sources. These ensure specified CMRR, settling time, and noise performance - all validated in the PGA203KPG4 datasheet.
What is the operating temperature range for the PGA203KPG4?
The PGA203KPG4 is specified for 0°C to +70°C (commercial range), as indicated by the "KP" suffix in its part number and confirmed in the Ordering Information table. Its plastic DIP package (PDIP-N, 14-pin) is rated for storage from –40°C to +100°C and operating from 0°C to +70°C. For extended temperature operation (–25°C to +85°C), the ceramic-package variants PGA203AG or PGA203BG are required - the PGA203KPG4 itself is not rated beyond +70°C.
Can the PGA203KPG4 drive heavy loads, and what is its output current capability?
Yes, the PGA203KPG4 can deliver ±5 mA continuous output current (±10 mA typ) into loads down to ±10 V swing, with output impedance of 0.5 Ω. Its output stage supports remote sensing via Pin 11 (Sense), allowing accurate regulation at the load despite PCB trace resistance. For higher current demands, the datasheet shows a current-boosting configuration using an external op amp (e.g., OPA633) in the feedback loop - preserving accuracy while extending drive capability beyond PGA203KPG4's native limits.
How does the PGA203KPG4 handle input overvoltage or ESD events?
The PGA203KPG4 features internally diode-clamped analog inputs (per Note 3 in the datasheet), rated for ±(VCC + 0.5 V) absolute maximum. This allows safe operation with standard RC input filters and basic series current-limiting resistors. While not rated to IEC 61000-4-2 ESD levels, the clamps provide robust protection against board-level transients and handling-induced static. For harsh environments, external TVS diodes or series resistors are recommended - but the PGA203KPG4's built-in clamps eliminate need for discrete protection in most lab and industrial DAQ applications.
PGA203KPG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1 MHz
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 6.5mA
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 12 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
PGA203KPG4 FAQ
1.How can I place an order for PGA203KPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for PGA203KPG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PGA203KPG4 reliable?
The price and inventory of PGA203KPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PGA203KPG4 is usually 5 days.
3.What payment methods are accepted for PGA203KPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PGA203KPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PGA203KPG4?
PGA203KPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PGA203KPG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PGA203KPG4?
For technical support, including PGA203KPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PGA203KPG4 requirements.
6.How does Aetrix verify that PGA203KPG4 is sourced from the original manufacturer or authorized distributors?
All PGA203KPG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PGA203KPG4 meets industry standards.
7.What is the process for return or replacement of PGA203KPG4?
All PGA203KPG4 units undergo pre-shipment inspection (PSI). If there is an issue with PGA203KPG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PGA203KPG4 part is unused and in its original packaging.
Return procedure for PGA203KPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PGA203KPG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
