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Texas Instruments PGA203KP
- Part No.:
- PGA203KP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
PGA203KP.pdf
- Description:
- IC INST AMP 1 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,989
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Product details
Overview
PGA203KP 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 at +25°C, 2 µs settling time to 0.01%, and ±15 V dual supply operation - deployed in auto-ranging data acquisition front-ends requiring precision, speed, and low drift.
For engineers reviewing the PGA203KP datasheet, PGA203KP pinout, PGA203KP application, or PGA203KP equivalent, key selection criteria include its 14-pin plastic DIP package, industrial-grade temperature range (–25°C to +85°C), gain accuracy (±0.05% typ at G=1), CMRR ≥80 dB (G=1), and compatibility with TTL/CMOS digital control lines A0/A1.
Technical Context
The PGA203KP uses a differential transconductance front end with four parallel FET-input stages, each laser-trimmed for offset and gain; gain switching occurs via current-steering logic that preserves bandwidth stability across gain settings. Its output stage is a differential transimpedance amplifier with laser-trimmed resistors to minimize output offset and drift.
Digital control is implemented through two TTL/CMOS-compatible inputs (A0, A1) referenced to a dedicated Digital Common pin (Pin 14), enabling microprocessor interface without level-shifting. The architecture decouples common-mode input range from gain - supporting ±13 V CMR at ±15 V supplies regardless of output voltage or gain setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Options | Binary-selectable: 1, 2, 4, 8 - enables precise scaling for multi-range ADC interfaces without external gain resistors. |
| Input Bias Current | ≤50 pA 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-switching in multiplexed DAQ systems with ≤100 kSPS effective throughput. |
| CMRR | ≥80 dB at G=1, ≥92 dB at G=100 - maintains signal integrity in noisy industrial environments with unbalanced source impedances. |
| Nonlinearity | ≤0.012% max - guarantees <120 ppm total harmonic distortion in precision measurement paths. |
| Supply Range | ±6 V to ±18 V - allows operation from standard ±12 V or ±15 V rails, with quiescent current of 6.5 mA typical. |
| Temp Range | –25°C to +85°C (specified) - validated for industrial embedded applications without derating. |
Pinout & Package
PGA203KP is housed in a 14-pin plastic DIP (PDIP-N) package with 2.54 mm pitch, 0.3" width, and through-hole mounting. Pin 1 is top-left corner (notch side), with pins numbered counter-clockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7 | NC / Filter A / VREF / Sense / Filter B / Adjust / –VCC | Pins 1–2, 4–7 are functional: VREF (Pin 4) sets reference level; Sense (Pin 11) enables remote load sensing; Filter A/B (Pins 5, 10) allow external capacitor-based bandwidth limiting. |
| 8, 9, 10, 11, 12, 13, 14 | +VCC / VADJ / Filter B / Sense / VOUT / –VCC / Digital Common | +VCC (Pin 8) and –VCC (Pin 13) power analog section; Digital Common (Pin 14) is isolated reference for A0/A1 logic; VOUT (Pin 12) drives loads up to ±5 mA. |
| A0, A1 (Pins 11, 12) | Digital Gain Select Inputs | TTL/CMOS-compatible inputs controlling gain per Table I: A1A0 = 00→G=1, 01→G=2, 10→G=4, 11→G=8. |
| +VIN, –VIN (Pins 2, 3) | Differential Analog Inputs | FET-buffered inputs with 10 GΩ || 1 pF common-mode impedance - require return path (e.g., 1–10 MΩ to common) to prevent saturation. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed gain and offset | Eliminates need for external calibration components; initial gain error ≤0.05% at G=1, G=2, G=4, G=8. |
| Output sense (Pin 11) | Enables Kelvin connection to load - cancels IR drop errors in high-current or long-trace applications. |
| Internal diode clamping | Protects inputs against overvoltage transients up to ±(VCC + 0.5 V); simplifies external ESD filtering design. |
| Transconductance front end | Maintains near-constant bandwidth (1000 kHz at G<1000) across all gains - avoids trade-off between gain and speed. |
| Dedicated Digital Common (Pin 14) | Isolates logic ground from analog ground - prevents digital noise coupling into sensitive analog signal paths. |
Applications
| Data Acquisition Front-End | Auto-Ranging Instrumentation |
|---|---|
Use Scenario: High-resolution sensor signal conditioning in modular DAQ modules with multiplexed thermocouple, RTD, or strain gauge inputs. IC Role / Device Role / Timing Role: Programmable-gain instrumentation amplifier providing selectable amplification before 16-bit SAR ADC sampling. Use Value: Enables single-channel hardware to support ±10 mV to ±10 V input ranges without manual gain switches or reconfiguration delays. | Use Scenario: Embedded test equipment that dynamically adjusts gain based on input signal amplitude to maximize ADC dynamic range utilization. IC Role / Device Role / Timing Role: Digitally controlled gain block synchronized with microcontroller's ADC conversion trigger and gain decision logic. Use Value: Achieves >100 dB effective dynamic range using only one PGA203KP and 16-bit ADC - no analog switches or relays required. |
| Remote Sensor Interface | Low-Noise Differential Amplifier |
Use Scenario: Industrial field transmitter with 4–20 mA loop-powered remote sensors located >100 m from control room. IC Role / Device Role / Timing Role: Precision instrumentation amplifier with output sense (Pin 11) connected directly at sensor terminal block. Use Value: Compensates for voltage drop across long twisted-pair wiring - maintains <0.01% gain accuracy despite 2 Ω line resistance. | Use Scenario: Low-noise signal chain for audio or vibration monitoring where input signals are below 100 µV RMS. IC Role / Device Role / Timing Role: First-stage gain element with G=100 configured via external attenuator (Figure 3), leveraging PGA203KP's 12 nV/√Hz input noise density. Use Value: Delivers 1.7 µVp-p 0.1–10 Hz noise floor - sufficient for detecting sub-micron mechanical displacements. |
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 |
|---|---|---|---|
| INA118P | Fixed-gain (1–1000) with external resistor set; no digital gain control; 100 pA max IB; slower 10 µs settling. | Requires external DAC/resistor network for programmability; unsuitable for fast gain-switching. | Select when cost sensitivity outweighs need for digital control and speed. |
| PGA205AU | Pin-compatible successor with improved specs: 25 pA IB, 1.5 µs settling, wider temp range (–40°C to +125°C), same 14-pin SOIC/DIP footprint. | Direct upgrade path with identical pinout and logic interface; supports higher reliability automotive/industrial use cases. | Select for new designs requiring extended temperature capability and lower drift. |
Compared with INA118P, PGA203KP delivers faster settling and integrated digital control but requires separate logic lines; versus PGA205AU, it offers proven legacy performance at lower cost but with higher bias current and narrower temperature specification.
Availability
PGA203KP is available at Aetrix Electronics and suitable for industrial data acquisition systems, automated test equipment, and remote sensor interface modules requiring stable component supply across extended production lifecycles.
Supply support for PGA203KP 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 acquired Burr-Brown in 2000 and maintains full technical support and manufacturing continuity for legacy precision analog products including the PGA20x series.
The PGA20x family was designed specifically for high-accuracy, digitally programmable signal conditioning in data acquisition and instrumentation - prioritizing gain stability, low drift, and microprocessor-compatible digital control over raw speed or power efficiency.
FAQ
What is the maximum operating temperature range specified for the PGA203KP?
The PGA203KP is specified over an operating temperature range of –25°C to +85°C, with storage range from –40°C to +100°C. This industrial-grade rating is confirmed in the "PACKAGE INFORMATION" table and "TEMPERATURE RANGE" specifications section of the datasheet, and applies specifically to the KP (plastic DIP) variant.
Does the PGA203KP require external components for basic operation?
No, the PGA203KP requires no external components for basic operation. Its gain and offset are laser-trimmed at wafer level, enabling direct connection of analog inputs (+VIN/–VIN), power supplies (±VCC), digital control lines (A0/A1), and Digital Common (Pin 14). External components are optional - e.g., filter capacitors on Pins 5/10 or offset adjust resistors on Pins 6/9 - only for advanced performance tuning.
How does the PGA203KP achieve constant bandwidth across different gain settings?
The PGA203KP achieves nearly constant bandwidth using a transconductance-based front end with four parallel, laser-trimmed FET input stages. Gain is selected by steering bias current among these stages rather than altering feedback networks - preserving output stage dominance in frequency response. As a result, small-signal bandwidth remains ~1000 kHz for G < 1000, verified in the "DYNAMIC RESPONSE" table and "GAIN vs FREQUENCY" curve.
Can the PGA203KP drive heavy loads, and what is its rated output current?
Yes, the PGA203KP can deliver ±5 mA continuous output current into loads, with rated output voltage swing of ±10 V at |IOUT| ≤ 5 mA (±15 V supplies). Its output stage includes internal current limiting and overload recovery (5 µs typical), and the Output Sense (Pin 11) feature allows direct feedback at the load to maintain accuracy under varying load conditions - critical for driving cables or actuators.
Is the PGA203KP pin-compatible with other members of the PGA202/203 family?
Yes, the PGA203KP shares identical pinout and footprint with all PGA202/203 variants (e.g., PGA202KP, PGA203AG, PGA203BG), including the 14-pin DIP configuration and function assignment per the "PIN CONFIGURATION" diagram. However, gain tables differ: PGA203KP implements binary gains (1, 2, 4, 8), while PGA202KP provides decade gains (1, 10, 100, 1000); electrical specs like offset voltage trim also vary by suffix (KP vs AG/BG).
PGA203KP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- 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
PGA203KP FAQ
1.How can I place an order for PGA203KP through Aetrix?
Please submit a Request for Quotation (RFQ) for PGA203KP 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 PGA203KP reliable?
The price and inventory of PGA203KP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PGA203KP is usually 5 days.
3.What payment methods are accepted for PGA203KP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PGA203KP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PGA203KP?
PGA203KP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PGA203KP 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 PGA203KP?
For technical support, including PGA203KP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PGA203KP requirements.
6.How does Aetrix verify that PGA203KP is sourced from the original manufacturer or authorized distributors?
All PGA203KP 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 PGA203KP meets industry standards.
7.What is the process for return or replacement of PGA203KP?
All PGA203KP units undergo pre-shipment inspection (PSI). If there is an issue with PGA203KP, 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 PGA203KP part is unused and in its original packaging.
Return procedure for PGA203KP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PGA203KP Tags
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