My Inquiry
My Account
Texas Instruments INA101HPG4
- Part No.:
- INA101HPG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
INA101HPG4.pdf
- Description:
- IC INST AMP 1 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,917
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
INA101HPG4 from Texas Instruments (formerly Burr-Brown) is a high-accuracy instrumentation amplifier designed for precision low-level signal amplification in data acquisition systems. It delivers 0.25 µV/°C max drift, 25 µV max input offset voltage, and 0.002% nonlinearity, with 106 dB CMR at 60 Hz - enabling reliable measurement of strain gages, thermocouples, and RTDs in industrial sensor interfaces.
For engineers reviewing the INA101HPG4 datasheet, INA101HPG4 pinout, INA101HPG4 application, or INA101HPG4 equivalent, key selection criteria include its laser-trimmed resistor network for gain accuracy, dual offset adjustment capability (input and output), TO-100/DIP/SOL-16 package options, and guaranteed performance over 0°C to +70°C for commercial-grade deployment.
Technical Context
The INA101HPG4 integrates three precision op amps and laser-trimmed metal-film resistors on a single monolithic IC to achieve high common-mode rejection and low gain error. Its gain is set by a single external resistor RG via G = 1 + 40 kΩ/RG, with gain error contributions explicitly specified across 1–1000 V/V range and temperature.
It features separate input offset adjustment pins (pins 5 & 6) and output offset trimming via the Common terminal, enabling independent nulling of amplifier-stage offsets without degrading thermal drift. The device requires a low-impedance Common connection (<0.1 Ω) to maintain rated CMR performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | 1 to 1000 V/V - supports scalable amplification of microvolt-level transducer outputs without changing topology. |
| Input Offset Voltage | ±25 µV max at +25°C - enables accurate DC-coupled measurement of low-amplitude signals without significant baseline error. |
| Offset Drift | 0.25 µV/°C max - ensures stable calibration over temperature in unregulated environments. |
| CMR @ 60 Hz | 106 dB at G = 100–1000 - rejects line-frequency interference in noisy industrial settings with balanced source impedances. |
| Input Impedance | 10¹⁰ Ω || 3 pF differential and common-mode - minimizes loading on high-Z sensors like piezoresistive bridges. |
| Input Voltage Noise | 13 nV/√Hz at 1 kHz (G = 1000) - preserves signal integrity in low-noise front-end stages for medical or test equipment. |
| Small-Signal Bandwidth | 2.5 kHz at G = 1000 - sufficient for static and quasi-static sensor measurements including load cells and pressure transducers. |
Pinout & Package
INA101HPG4 is supplied in a 14-pin plastic DIP (PDIP) package per TI's ordering information (package code N). Pin assignments are identical to the INA101HP variant and validated per Figure 2 and PIN CONFIGURATIONS section of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 14 | Offset Adjust | Inputs to internal trim circuitry; connected to potentiometer wiper for input offset nulling at high gain (G ≥ 100). |
| 2 | –Input | Inverting input of first-stage differential pair; connects to negative side of bridge or thermocouple. |
| 3 | –VCC | Negative supply rail; must be decoupled locally to minimize noise coupling into sensitive analog core. |
| 4 | +Input | Non-inverting input of first-stage differential pair; connects to positive side of transducer. |
| 5, 6 | Gain Set | Terminals for external RG resistor; sets gain per G = 1 + 40 kΩ/RG with direct impact on accuracy and drift. |
| 7 | Common | Output reference node; must be tied to low-impedance ground to preserve CMR; used for output offset trimming. |
| 8 | Output | Differential output referenced to Common; drives ADC inputs or downstream signal conditioning stages. |
| 9, 10 | Gain Sense | Optional Kelvin connections (DIP/SOL-16 only); reduce gain error from socket/wiring resistance at G ≥ 100. |
| 11, 12 | +VCC | Positive supply rail; supports ±5 V to ±20 V operation; requires local 1 µF tantalum decoupling. |
| 13 | NC | No connect - not bonded internally; left unconnected in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed thin-film resistors | Enables <0.1% gain error and <22 ppm/°C gain tempco at G = 100 without external trimming. |
| Dual offset adjustment | Separate input (pins 5/6) and output (via Common pin) nulling allows optimization of both stage-specific drift contributions. |
| High CMR with imbalance tolerance | Maintains >90 dB CMR even with 1 kΩ source impedance mismatch - critical for real-world transducer wiring. |
| Low 1/f noise | 0.8 µV p-p (0.01–10 Hz) enables stable DC measurements in weigh scales and biomedical front-ends. |
| Gain sense terminals | Available on DIP and SOL-16 packages to eliminate gain error from trace/solder joint resistance in production assemblies. |
Applications
| Strain Gage Bridge Interface | Thermocouple Signal Conditioning |
|---|---|
Use Scenario: Amplifying mV-level differential output from a full-bridge load cell in an industrial weighing system. IC Role / Device Role: Precision instrumentation amplifier providing gain, common-mode rejection, and offset stability before ADC digitization. Use Value: Delivers 0.002% nonlinearity and 0.25 µV/°C drift to ensure repeatability within ±0.01% FS across ambient temperature swings. | Use Scenario: Cold-junction compensated amplification of Type-K thermocouple output in furnace temperature control. IC Role / Device Role: High-input-impedance, low-drift gain block rejecting EMI while preserving µV/°C sensitivity. Use Value: 106 dB CMR at 60 Hz suppresses AC line noise; 13 nV/√Hz input noise avoids masking thermocouple's 41 µV/°C signal. |
| RTD Measurement Front-End | Medical Biopotential Acquisition |
Use Scenario: Exciting and amplifying 3-wire Pt100 RTD in a precision temperature transmitter. IC Role / Device Role: Differential amplifier rejecting lead resistance errors and common-mode noise from excitation current source. Use Value: 10¹⁰ Ω input impedance prevents current leakage errors; laser-trimmed resistors ensure stable 2-wire/3-wire ratio matching. | Use Scenario: Low-noise amplification of ECG electrode signals in portable patient monitors. IC Role / Device Role: First-stage IA rejecting 50/60 Hz mains interference while preserving sub-µV biopotential waveforms. Use Value: 0.8 µV p-p 0.01–10 Hz noise and 0.25 µV/°C drift enable diagnostic-quality ST-segment resolution without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD620ARZ | Higher input bias current (1 nA vs 15 nA typ), lower CMR (100 dB at 60 Hz), no output offset trim. | Better suited for battery-powered, low-quiescent-current designs where output trimming is unnecessary. | Select AD620ARZ when board space is constrained and gain stability over temperature is less critical than power efficiency. |
| INA128UA | Lower max gain (1000 vs 1000), higher offset drift (0.5 µV/°C), but improved PSRR (110 dB) and wider supply range (±2.25 V to ±18 V). | Preferred for mixed-signal systems with noisy digital supplies or wide-voltage rails. | Choose INA128UA when operating from split supplies below ±12 V or requiring superior power supply noise rejection. |
Compared with AD620ARZ and INA128UA, the INA101HPG4 offers the lowest offset drift and highest CMR at 60 Hz - making it optimal for metrology-grade industrial sensing where long-term calibration stability is mandatory, despite its fixed ±15 V nominal supply requirement.
Availability
INA101HPG4 is available at Aetrix Electronics and suitable for strain gage interfaces, thermocouple signal conditioning, and RTD measurement systems requiring stable component supply across commercial temperature ranges.
Supply support for INA101HPG4 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 signal chain components dating to Burr-Brown's acquisition in 2000.
The INA101HPG4 belongs to TI's legacy instrumentation amplifier portfolio, engineered specifically for high-accuracy DC-coupled measurement in industrial process control, test equipment, and medical instrumentation where laser-trimmed resistor matching and ultra-low drift are essential.
FAQ
What is the maximum gain achievable with the INA101HPG4, and how is it set?
The INA101HPG4 supports a gain range of 1 to 1000 V/V, set externally using a single resistor RG connected between pins 5 and 6. The gain equation is G = 1 + 40 kΩ/RG; for G = 1000, RG = 40.04 Ω. The device's laser-trimmed internal resistors ensure this relationship holds with minimal deviation across temperature and time, and the gain sense terminals (pins 9–10 on DIP packages) mitigate errors from parasitic resistance in high-gain configurations.
Does the INA101HPG4 require external capacitors for stability, and what are the recommended values?
Yes, the INA101HPG4 requires local decoupling: 1 µF tantalum capacitors from each supply pin (pins 11/12 to +VCC, pin 3 to –VCC) to ground, placed within 5 mm of the device. For capacitive loads exceeding 1000 pF, a series 10 Ω resistor between output (pin 8) and load is recommended to prevent peaking. These values are validated in the "APPLICATION INFORMATION" section of the datasheet and ensure stable operation across all gain settings and supply voltages.
Can the INA101HPG4 operate from a single supply, and what are the limitations?
No, the INA101HPG4 is specified only for dual-supply operation (±5 V to ±20 V). Its architecture relies on symmetric rails to center the output swing and maintain linearity; single-supply use violates absolute maximum ratings and causes clipping or undefined behavior. For single-supply applications, TI recommends alternatives such as the INA333 or INA128, which feature rail-to-rail output and input common-mode range extending to V–.
How does the Common pin (pin 7) function in the INA101HPG4, and why must it be low-impedance?
The Common pin (pin 7) serves as the output reference node and enables output offset trimming. It must be connected to a low-impedance ground (<0.1 Ω) because any series resistance degrades common-mode rejection - for example, a 1 Ω path reduces CMR by >20 dB at 60 Hz. This requirement is explicitly quantified in the datasheet and critical for achieving the rated 106 dB CMR performance in real-world PCB layouts.
Is the INA101HPG4 RoHS-compliant, and what is its moisture sensitivity level?
Yes, the INA101HPG4 is RoHS-compliant (lead-free finish: NiPdAu). As a PDIP (plastic DIP) package, it carries no MSL rating - JEDEC classifies through-hole packages like PDIP as exempt from moisture sensitivity level classification. Per TI's packaging documentation, the device may be stored indefinitely at ambient conditions without baking, and standard wave soldering profiles apply without preconditioning.
INA101HPG4 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:
- 0.4V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 300 kHz
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 125 µV
- Current - Supply:
- 6.7mA
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
INA101HPG4 FAQ
1.How can I place an order for INA101HPG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA101HPG4 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 INA101HPG4 reliable?
The price and inventory of INA101HPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA101HPG4 is usually 5 days.
3.What payment methods are accepted for INA101HPG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA101HPG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA101HPG4?
INA101HPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA101HPG4 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 INA101HPG4?
For technical support, including INA101HPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA101HPG4 requirements.
6.How does Aetrix verify that INA101HPG4 is sourced from the original manufacturer or authorized distributors?
All INA101HPG4 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 INA101HPG4 meets industry standards.
7.What is the process for return or replacement of INA101HPG4?
All INA101HPG4 units undergo pre-shipment inspection (PSI). If there is an issue with INA101HPG4, 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 INA101HPG4 part is unused and in its original packaging.
Return procedure for INA101HPG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA101HPG4 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…
