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Texas Instruments PGA207UA/1K
- Part No.:
- PGA207UA/1K
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
PGA207UA/1K.pdf
- Description:
- IC INST AMP 1 CIRCUIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,026
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Product details
Overview
PGA207UA/1K from Texas Instruments (originally Burr-Brown) is a high-speed, digitally programmable gain instrumentation amplifier with FET inputs, ±40V input protection, 1.5mV max offset voltage, and selectable gains of 1, 2, 5, and 10 V/V - used in multiplexed data acquisition systems for medical sensors and PC-based analog input boards.
For engineers reviewing the PGA207UA/1K datasheet, PGA207UA/1K pinout, PGA207UA/1K application, or PGA207UA/1K equivalent, key selection criteria include gain-switching speed (500 ns), settling time to 0.01% (3.5 µs), input bias current (≤100 pA), common-mode rejection at G=10 (≥84 dB), and SOIC-16 package compatibility with automated SMT assembly.
Technical Context
The PGA207UA/1K implements a three-op-amp instrumentation architecture with digitally controlled feedback networks routed via two TTL/CMOS-compatible address lines (A0, A1). Its FET-input stages enable ultra-low input bias current and high input impedance (10¹³ Ω || 1 pF), critical for high-impedance sensor interfaces.
Input overvoltage protection operates independently of power supply status, clamping to ±40V without damage. Gain switching is asynchronous and immediate - no internal latching - with output settling governed solely by the selected gain's bandwidth (600 kHz at G=10) and slew rate (25 V/µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gains | 1, 2, 5, 10 V/V - discrete, laser-trimmed ratios enabling precise scaling without external resistors |
| Settling Time (0.01%) | 3.5 µs - supports ≥285 kSPS multiplexed sampling with full accuracy across all gains |
| Input Bias Current | ≤100 pA max - minimizes voltage error from sensor source resistance up to 10 MΩ |
| Input Protection | ±40V continuous - survives sensor disconnect transients and field wiring faults without power applied |
| CMRR (G=10) | ≥84 dB - maintains signal integrity in noisy industrial environments with common-mode interference |
| Bandwidth (G=10) | 600 kHz - enables accurate amplification of physiological signals (e.g., ECG, EMG) up to ~100 kHz |
| Offset Voltage | ±1.5 mV max - reduces DC calibration burden in multi-channel DAQ systems |
Pinout & Package
SOL-16 surface-mount package (SOIC-16, DW package drawing), 10.75 mm × 10.7 mm footprint, 1.75 mm height, moisture sensitivity level 3 (260°C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 13 | VO1 / VO2 | Outputs of input-stage amplifiers A1 and A2 - accessible for overload detection and shield drive circuits |
| 2, 3 | VIN– / VIN+ | Differential instrumentation inputs - FET-based, protected to ±40V, 10¹³ Ω input impedance |
| 4, 5 | VOS Adj | Offset trim terminals - support independent input/output stage adjustment per gain setting |
| 6, 9 | V– / V+ | Negative/positive supply pins - operate from ±4.5V to ±18V; quiescent current ±13.5 mA |
| 7, 16 | A1 / A0 | Digital gain select inputs - TTL/CMOS compatible; 500 ns switching time, no internal latch |
| 8 | Digital Ground | Separate digital reference node - carries ~1.2 mA return current; must be isolated from analog ground |
| 10, 11 | Ref / VO | Output reference and main output - Ref sets output common-mode; VO delivers final amplified signal |
| 12 | Sense | Output sense feedback - must connect directly to VO pin for accurate load regulation and CMR preservation |
| 14, 15 | NC | No internal connection - left unconnected; not bonded or functional |
Key Features
| Feature | Design Value |
|---|---|
| FET input stage | 100 pA max input bias current enables direct interfacing with thermocouples, piezoelectric sensors, and high-Z bridges without guard traces |
| Digital gain control | Two-pin (A0/A1) interface eliminates need for external DACs or microcontroller GPIO expansion in compact DAQ modules |
| Overvoltage survival | ±40V input tolerance with supplies off prevents field-repair failures in industrial sensor nodes and medical equipment |
| Laser-trimmed offset | ±1.5 mV max initial offset reduces system-level zeroing cycles and improves channel-to-channel matching in 16-channel DAQ cards |
| Fast settling | 3.5 µs to 0.01% allows interleaved gain switching across 4+ channels at >200 kSPS aggregate throughput |
Applications
| Medical Physiological Monitoring | Industrial Multiplexed DAQ |
|---|---|
Use Scenario: Amplifying low-amplitude, high-impedance bio-signals (ECG, EEG, EMG) from dry electrodes or needle sensors in portable patient monitors. IC Role / Device Role / Timing Role: Primary signal conditioning stage - provides programmable gain, input protection, and high CMRR before ADC digitization. Use Value: ±40V input protection prevents damage during electrode attachment/detachment; 100 pA bias current avoids signal degradation from skin-electrode interface impedance. | Use Scenario: Scanning 8–16 sensor channels (RTDs, strain gauges, thermocouples) on a single PCB using an analog multiplexer and shared PGA. IC Role / Device Role / Timing Role: Channel-specific gain scaling element - gain reconfigured per channel read cycle to optimize ADC dynamic range usage. Use Value: 3.5 µs settling enables full-scale accuracy at 285 kSPS per channel; digital address interface simplifies FPGA or microcontroller control logic. |
| PC-Based Analog Input Boards | Shield Drive Circuits |
Use Scenario: OEM data acquisition cards for LabVIEW or MATLAB-based test systems requiring software-selectable gain per measurement task. IC Role / Device Role / Timing Role: Precision front-end amplifier - accepts differential sensor inputs and outputs to successive-approximation ADCs with minimal external components. Use Value: Gains of 1/2/5/10 V/V cover standard sensor output ranges (±10 mV to ±10 V); SOIC-16 package supports high-density layout on PCIe or USB DAQ boards. | Use Scenario: Driving coaxial cable shields in low-noise measurement setups to reduce triboelectric and capacitive coupling errors. IC Role / Device Role / Timing Role: Active shield driver - VO1 or VO2 outputs sourced from internal A1/A2 amplifiers replicate common-mode voltage onto cable shield. Use Value: Direct access to VO1/VO2 eliminates need for external op amps; preserves phase-matched drive due to shared input-stage topology. |
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 |
|---|---|---|---|
| INA128UA | Analog gain set via external resistor; fixed G=10, 100, 1000; no digital control; lower bandwidth (1.3 MHz @ G=100) | Used where gain is static per board revision; lacks per-channel reconfiguration capability | Select when digital gain switching is unnecessary and higher precision at fixed gain is required |
| AD8253ARMZ | True rail-to-rail output; SPI interface; G=1, 10, 100, 1000; integrated reference buffer; 10 µV/°C drift vs PGA207UA/1K's 6 µV/°C | Preferred in battery-powered or wide-supply designs needing output swing to rails and digital bus integration | Select when SPI control, rail-to-rail output, or higher gain ranges outweigh need for sub-µs settling and ±40V fault tolerance |
Compared with INA128UA and AD8253ARMZ, PGA207UA/1K uniquely balances fast digital gain switching (500 ns), robust ±40V input survivability, and low-drift FET inputs - making it optimal for ruggedized, multiplexed, medium-bandwidth sensor acquisition where reliability and channel agility are prioritized over rail-to-rail output or SPI configurability.
Availability
PGA207UA/1K is available at Aetrix Electronics and suitable for medical device manufacturing, industrial data loggers, and PC-based test equipment requiring stable component supply and long-term obsolescence management.
Supply support for PGA207UA/1K 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 legacy product support, documentation, and qualification for high-reliability analog components.
The PGA207UA/1K belongs to TI's precision instrumentation amplifier portfolio, designed specifically for multiplexed, high-accuracy sensor signal chains in medical, industrial, and test equipment where gain agility, input ruggedness, and low drift are essential.
FAQ
What gain settings does the PGA207UA/1K support, and how are they selected?
The PGA207UA/1K supports four discrete gains: 1, 2, 5, and 10 V/V. These are selected using two digital inputs - A0 and A1 - with logic levels compatible with TTL and CMOS. The gain changes immediately upon address transition (no internal latch), with a guaranteed switching time of 500 ns. For the PGA207UA/1K, the mapping is A1A0 = 00→G=1, 01→G=2, 10→G=5, 11→G=10.
Does the PGA207UA/1K require external components for basic operation?
No, the PGA207UA/1K operates as a complete instrumentation amplifier with internally laser-trimmed feedback networks. Only decoupling capacitors (e.g., 1 µF on V+ and V−) and proper grounding (separate analog/digital ground paths) are required. External offset trim is optional and only needed in ultra-high-accuracy applications; the PGA207UA/1K achieves ±1.5 mV max initial offset without trimming.
Can the PGA207UA/1K withstand input overvoltage when powered down?
Yes - the PGA207UA/1K features robust input protection that remains active even with no power applied. Inputs tolerate continuous ±40V differential or common-mode voltage without damage or latch-up. This is verified in the absolute maximum ratings and confirmed by the "Input Over-Voltage V/I Characteristic" curve in the datasheet, ensuring reliability during sensor hot-plug or field wiring faults.
What is the purpose of the VO1 and VO2 pins on the PGA207UA/1K?
VO1 and VO2 are the buffered outputs of the two input-stage amplifiers (A1 and A2). They are not intended for primary signal output but serve critical diagnostic and circuit-enhancement functions: detecting input-stage saturation during overloads, implementing active shield drive circuits, and supporting custom feedback configurations. In standard use, only VO (pin 11) and Ref (pin 10) are connected to the load.
Is the PGA207UA/1K RoHS compliant and suitable for modern SMT assembly?
Yes - the PGA207UA/1K is RoHS compliant (lead finish: NiPdAuAg), packaged in a SOIC-16 (DW) carrier tape with 1000 units per reel, and rated for moisture sensitivity level 3 (MSL-3, 260°C peak reflow). Its 10.75 mm × 10.7 mm footprint and gull-wing leads are fully compatible with standard pick-and-place and reflow processes used in high-volume electronics manufacturing.
PGA207UA/1K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 25V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 5 MHz
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 12.4mA
- Current - Output / Channel:
- 17 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
PGA207UA/1K FAQ
1.How can I place an order for PGA207UA/1K through Aetrix?
Please submit a Request for Quotation (RFQ) for PGA207UA/1K 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 PGA207UA/1K reliable?
The price and inventory of PGA207UA/1K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PGA207UA/1K is usually 5 days.
3.What payment methods are accepted for PGA207UA/1K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PGA207UA/1K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PGA207UA/1K?
PGA207UA/1K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PGA207UA/1K 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 PGA207UA/1K?
For technical support, including PGA207UA/1K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PGA207UA/1K requirements.
6.How does Aetrix verify that PGA207UA/1K is sourced from the original manufacturer or authorized distributors?
All PGA207UA/1K 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 PGA207UA/1K meets industry standards.
7.What is the process for return or replacement of PGA207UA/1K?
All PGA207UA/1K units undergo pre-shipment inspection (PSI). If there is an issue with PGA207UA/1K, 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 PGA207UA/1K part is unused and in its original packaging.
Return procedure for PGA207UA/1K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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