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Texas Instruments PGA207UA
- Part No.:
- PGA207UA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
PGA207UA.pdf
- Description:
- IC INST AMP 1 CIRCUIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:107
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Product details
Overview
PGA207UA 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, or 10 V/V - used in multiplexed data acquisition systems for medical sensors and PC-based analog input boards.
For engineers reviewing the PGA207UA datasheet, PGA207UA pinout, PGA207UA application, or PGA207UA equivalent, key selection criteria include its 3.5µs settling time to 0.01%, ±100pA input bias current, SOL-16 SOIC package, and compatibility with CMOS/TTL address lines A0/A1 for gain control in noise-sensitive, high-impedance signal chains.
Technical Context
The PGA207UA implements a three-op-amp instrumentation architecture with digitally switched internal feedback networks, enabling precise gain selection without external resistors. Its FET-input stages deliver ultra-low input bias current (≤100pA), critical for thermocouple and bridge sensor interfaces where series resistance causes error.
Input over-voltage protection operates independently of power supply status, clamping ±40V transients at both inputs. Gain switching occurs in 500ns, followed by full settling in ≤3.5µs - supporting high-throughput channel multiplexing while maintaining DC accuracy via laser-trimmed offset and drift (±2µV/°C typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gains | 1, 2, 5, 10 V/V - digitally selected via A0/A1 logic inputs; no external components required. |
| Settling Time (0.01%) | 3.5 µs - enables ≥285 kSPS effective sampling rate in multiplexed DAQ systems. |
| Input Bias Current | ≤100 pA - preserves signal integrity with high-impedance sources (e.g., pH electrodes, piezoelectric sensors). |
| Input Protection | ±40 V - survives fault conditions even with supplies off; no external TVS needed. |
| Offset Voltage (max) | ±2.5 mV - laser-trimmed for precision DC measurements without manual calibration. |
| Bandwidth (G=10) | 600 kHz - supports bandwidth-limited physiological signals (ECG, EEG) without aliasing. |
| Supply Range | ±4.5 V to ±18 V - compatible with standard dual-rail industrial and medical power rails. |
Pinout & Package
SOL-16 surface-mount package (SOIC-DW, 16-pin), RoHS-compliant, moisture sensitivity level 3 (260°C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | VO1 / VO2 | Outputs of internal input amplifiers A1 and A2; used for overload detection and shield drive circuits. |
| 2, 3 | VIN– / VIN+ | Differential analog inputs with ±40V protection and 10¹³ Ω || 1 pF impedance. |
| 4, 5 | V– / V+ | Negative and positive supply pins; support ±4.5 V to ±18 V operation. |
| 6 | A1 | MSB gain select input; TTL/CMOS-compatible, referenced to digital ground (pin 14). |
| 7 | A0 | LSB gain select input; controls gain per truth table (00=1×, 01=2×, 10=5×, 11=10×). |
| 8, 9 | VOS Adj / Ref | Offset adjustment node and output reference; Ref must be low-impedance for >90 dB CMR. |
| 10, 11 | VO / Sense | Main output and sense connection; Sense (pin 12) must tie directly to VO (pin 11) for accurate load regulation. |
| 12 | Sense | Output sense terminal - connects to pin 11 for Kelvin sensing; improves accuracy under varying load conditions. |
| 13, 15 | NC / NC | No internal connection - left unconnected per datasheet; no routing or grounding required. |
| 14 | Digital Ground | Dedicated return path for digital logic current (~1.2 mA); must be isolated from analog ground to prevent noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| FET-input architecture | Enables ≤100 pA input bias current - eliminates errors from high-source-impedance sensors like thermocouples. |
| Laser-trimmed offset & drift | ±2.5 mV max offset and ±2 µV/°C typical drift - reduces need for system-level calibration in medical devices. |
| Integrated over-voltage protection | Withstands ±40 V on either input - protects downstream ADCs and eliminates discrete clamp diodes in field-connected systems. |
| Fast gain switching & settling | 500 ns logic propagation + 3.5 µs full settling - supports >250 kSPS channel scan rates in 16-channel DAQ modules. |
| Dedicated digital ground pin | Isolates 1.2 mA digital current from analog ground - prevents CMR degradation caused by shared ground impedance. |
Applications
| Medical Physiological Monitoring | PC-Based Data Acquisition Boards |
|---|---|
Use Scenario: Amplifying low-level ECG or EMG signals from dry electrodes with high source impedance and variable common-mode interference. IC Role / Device Role / Timing Role: Instrumentation amplifier providing programmable gain, DC-coupled signal conditioning, and ±40V defibrillation pulse tolerance. Use Value: Maintains >90 dB CMR at 60 Hz while rejecting electrode half-cell potentials up to ±300 mV - enabling clean baseline capture without AC coupling. | Use Scenario: Channel-multiplexed analog front-end for industrial test equipment requiring software-selectable gain per sensor type (RTD, strain gauge, thermocouple). IC Role / Device Role / Timing Role: Digitally reconfigurable gain stage synchronized to multiplexer address changes and ADC sampling clock. Use Value: 3.5 µs settling ensures <0.01% gain error across all four gains - eliminating per-channel calibration in 16-bit DAQ systems. |
| Multiplexed Sensor Arrays | Bridge-Based Transducer Interfaces |
Use Scenario: Scanning 8–16 pressure or flow sensors in HVAC control panels using a single PGA207UA and analog multiplexer. IC Role / Device Role / Timing Role: High-Z input buffer and gain selector that maintains signal fidelity during rapid channel switching. Use Value: FET inputs prevent charge injection errors from multiplexer switching; ±40V tolerance allows direct connection to unconditioned field wiring. | Use Scenario: Conditioning Wheatstone bridge outputs from load cells or pressure sensors with mismatched arm impedances. IC Role / Device Role / Timing Role: Precision instrumentation amplifier rejecting common-mode bridge excitation noise while amplifying differential strain signals. Use Value: 100 dB CMR at G=10 suppresses 5 V bridge excitation ripple - achieving <1 µV/°C thermal drift in weigh-scale electronics. |
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 | Fixed gain (5–10,000 V/V), no digital control; higher offset (±125 µV), slower settling (16 µs @ 0.01%). | Requires external gain-setting resistor; unsuitable for dynamic gain switching in multiplexed systems. | Select when fixed, high-precision gain suffices and digital interface is unnecessary. |
| AD8253ARMZ | Gain of 1/2/4/8/16/32/64/128 V/V; SPI interface; higher bandwidth (3 MHz @ G=1); 20-lead LFCSP package. | Requires serial communication overhead; not pin-compatible; better for wide-gain-range, high-speed applications. | Select when >128× gain range or SPI-controlled sequencing is required; avoid if board space or logic simplicity is constrained. |
Compared with INA128UA and AD8253ARMZ, the PGA207UA uniquely balances TTL/CMOS-compatible parallel gain control, ±40V ruggedness, and sub-4 µs settling - making it optimal for cost-sensitive, high-channel-count DAQ where fast, deterministic gain changes are essential without microcontroller intervention.
Availability
PGA207UA is available at Aetrix Electronics and suitable for medical physiological monitoring, PC-based data acquisition boards, and multiplexed sensor array applications requiring stable component supply and long-term industrial lifecycle support.
Supply support for PGA207UA 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 analog product lines including precision instrumentation amplifiers.
The PGA207UA belongs to TI's legacy programmable-gain instrumentation amplifier family, designed specifically for high-accuracy, multiplexed data acquisition in medical, industrial, and test equipment where input protection, low bias current, and fast settling are critical.
FAQ
What gain settings does the PGA207UA support, and how are they selected?
The PGA207UA supports four discrete gains: 1, 2, 5, and 10 V/V. These are selected using two CMOS/TTL-compatible digital inputs - A0 (pin 7) and A1 (pin 6) - with logic states interpreted per the datasheet truth table. No external resistors or configuration registers are needed; gain changes take effect within 500 ns of address transition, followed by full output settling in ≤3.5 µs. This behavior is intrinsic to the PGA207UA's internal switched-feedback architecture.
Does the PGA207UA require external components for basic operation?
No, the PGA207UA operates with only power supplies (±4.5 V to ±18 V), digital address lines (A0/A1), and a low-impedance connection on the Ref pin (pin 8). Decoupling capacitors (e.g., 1 µF) are recommended near V+/V– pins for noisy supplies, and the Sense pin (12) must be tied directly to VO (11) for specified load regulation. The PGA207UA integrates laser-trimmed resistors, over-voltage protection, and FET inputs - eliminating need for external gain-setting networks or protection diodes in most applications.
Can the PGA207UA withstand input voltages beyond its supply rails?
Yes, the PGA207UA features robust ±40 V input protection on both VIN+ and VIN– pins - functional even when power supplies are disconnected. This protection uses internal clamping circuitry that limits input current to safe levels without damaging the device or degrading performance. It is explicitly validated per Absolute Maximum Ratings and typical curves in the datasheet, making the PGA207UA suitable for industrial field wiring and defibrillator-tolerant medical designs where transient over-voltages are expected.
What is the purpose of the VO1 and VO2 pins on the PGA207UA?
Pins 1 and 16 (VO1 and VO2) provide access to the outputs of the two internal input amplifiers (A1 and A2). They are not main signal outputs but serve diagnostic and advanced configuration functions: detecting input overload (e.g., saturation of A1 or A2), implementing shield drive circuits to reduce cable capacitance effects, and enabling custom offset compensation topologies. Their use is optional in basic configurations but critical in high-accuracy or noise-sensitive applications - a capability unique to the PGA207UA's three-op-amp architecture.
Is the PGA207UA still in active production, and what packaging options are available?
The PGA207UA is marked "Last Time Buy" by Texas Instruments but remains actively stocked and supported by Aetrix Electronics for legacy design continuity. It is supplied exclusively in the SOL-16 (SOIC-DW) surface-mount package, 16-pin, with tape-and-reel packaging (1000 units per reel, Q1 pin 1 orientation). The device meets RoHS requirements, has MSL Level-3 rating (260°C reflow), and carries the marking "PGA207UA" on the top surface - consistent with TI's official packaging addendum for this orderable part number.
PGA207UA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- 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 FAQ
1.How can I place an order for PGA207UA through Aetrix?
Please submit a Request for Quotation (RFQ) for PGA207UA 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 reliable?
The price and inventory of PGA207UA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PGA207UA is usually 5 days.
3.What payment methods are accepted for PGA207UA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PGA207UA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PGA207UA?
PGA207UA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PGA207UA 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?
For technical support, including PGA207UA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PGA207UA requirements.
6.How does Aetrix verify that PGA207UA is sourced from the original manufacturer or authorized distributors?
All PGA207UA 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 meets industry standards.
7.What is the process for return or replacement of PGA207UA?
All PGA207UA units undergo pre-shipment inspection (PSI). If there is an issue with PGA207UA, 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 part is unused and in its original packaging.
Return procedure for PGA207UA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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