Specifications
| Type | Description |
|---|---|
| Part Number | INA333 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | 8-pin VSSOP (DGK) 3.00 mm x 3.00 mm; 8-pin WSON (DRG) 3.00 mm x 3.00 mm |
| Supply voltage range | 1.8 to 5.5 V; Recommended operating conditions; Source page 4 |
| Specified temperature range | -40 to 125 °C; Recommended operating conditions; Source page 4 |
| Absolute maximum supply voltage | 7 V; Over operating free-air temperature range; Source page 4 |
| Absolute maximum analog input voltage | (V-) - 0.3 to (V+) + 0.3 V; Over operating free-air temperature range; Source page 4 |
| Output short-circuit rating | Continuous; Short-circuit to ground; Source page 4 |
| Absolute maximum operating temperature | -40 to 150 °C; Absolute maximum ratings; Source page 4 |
| Junction temperature | 150 °C; Absolute maximum ratings; Source page 4 |
| Storage temperature range | -65 to 150 °C; Absolute maximum ratings; Source page 4 |
| HBM ESD rating | ±4000 V; ANSI/ESDA/JEDEC JS-001; Source page 4 |
| CDM ESD rating | ±1000 V; JEDEC JESD22-C101; Source page 4 |
| Machine model ESD rating | ±200 V; Machine model; Source page 4 |
| Junction-to-ambient thermal resistance | 169.5 °C/W; DGK VSSOP, 8 pins; Source page 4 |
| Junction-to-ambient thermal resistance | 60 °C/W; DRG WSON, 8 pins; Source page 4 |
| Input offset voltage RTI | typ ±10±25/G µV; max ±25±75/G µV; VS=1.8 V to 5.5 V, TA=25°C, RL=10 kΩ, VREF=VS/2, G=1 unless otherwise noted; Source page 5 |
| Input offset voltage drift | typ ±0.1±0.5/G µV/°C; TA=-40°C to +125°C; Source page 5 |
| Power-supply rejection | typ ±1±5/G µV/V; max ±5±15/G µV/V; 1.8 V ≤ VS ≤ 5.5 V; Source page 5 |
| Differential input impedance | 100||3 GΩ||pF; Electrical characteristics; Source page 5 |
| Common-mode input impedance | 100||3 GΩ||pF; Electrical characteristics; Source page 5 |
| Common-mode voltage range | (V-) + 0.1 to (V+) - 0.1 V; VO=0 V; Source page 5 |
| Common-mode rejection ratio | min 80 dB; typ 90 dB; G=1, DC to 60 Hz, VCM=(V-)+0.1 V to (V+)-0.1 V; Source page 5 |
| Common-mode rejection ratio | min 100 dB; typ 110 dB; G=10, DC to 60 Hz, VCM=(V-)+0.1 V to (V+)-0.1 V; Source page 5 |
| Common-mode rejection ratio | min 100 dB; typ 115 dB; G=100, DC to 60 Hz, VCM=(V-)+0.1 V to (V+)-0.1 V; Source page 5 |
| Common-mode rejection ratio | min 100 dB; typ 115 dB; G=1000, DC to 60 Hz, VCM=(V-)+0.1 V to (V+)-0.1 V; Source page 5 |
| Input bias current | typ ±70 pA; max ±200 pA; Electrical characteristics; Source page 5 |
| Input offset current | typ ±50 pA; max ±200 pA; Electrical characteristics; Source page 5 |
| Input voltage noise density | 50 nV/√Hz; G=100, RS=0 Ω, f=10 Hz; Source page 5 |
| Input voltage noise density | 50 nV/√Hz; G=100, RS=0 Ω, f=100 Hz; Source page 5 |
| Input voltage noise density | 50 nV/√Hz; G=100, RS=0 Ω, f=1 kHz; Source page 5 |
| Input voltage noise | 1 µVPP; G=100, RS=0 Ω, f=0.1 Hz to 10 Hz; Source page 5 |
| Input current noise density | 100 fA/√Hz; f=10 Hz; Source page 5 |
| Input current noise | 2 pAPP; f=0.1 Hz to 10 Hz; Source page 5 |
| Gain equation | G = 1 + (100 kΩ / RG) V/V; External resistor between RG pins; Source page 5 |
| Gain range | 1 to 1000 V/V; Electrical characteristics; Source page 5 |
| Gain error | typ ±0.01%; max ±0.1%; G=1, VS=5.5 V, (V-)+100 mV ≤ VO ≤ (V+)-100 mV; Source page 5 |
| Gain error | typ ±0.05%; max ±0.25%; G=10, VS=5.5 V, (V-)+100 mV ≤ VO ≤ (V+)-100 mV; Source page 5 |
| Gain error | typ ±0.07%; max ±0.25%; G=100, VS=5.5 V, (V-)+100 mV ≤ VO ≤ (V+)-100 mV; Source page 5 |
| Gain error | typ ±0.25%; max ±0.5%; G=1000, VS=5.5 V, (V-)+100 mV ≤ VO ≤ (V+)-100 mV; Source page 5 |
| Gain drift | typ ±1 ppm/°C; max ±5 ppm/°C; G=1, TA=-40°C to +125°C; Source page 5 |
| Gain drift | typ ±15 ppm/°C; max ±50 ppm/°C; G>1, TA=-40°C to +125°C, excludes external RG effects; Source page 5 |
| Gain nonlinearity | 10 ppm; G=1 to 1000, RL=10 kΩ, VS=5.5 V, (V-)+100 mV ≤ VO ≤ (V+)-100 mV; Source page 5 |
| Output voltage swing from rail | 50 mV; VS=5.5 V, RL=10 kΩ; Source page 5 |
| Capacitive load drive | 500 pF; Electrical characteristics; Source page 5 |
| Short-circuit current | -40, +5 mA; Continuous to common; Source page 5 |
| Bandwidth | 150 kHz; G=1, -3 dB; Source page 6 |
| Bandwidth | 35 kHz; G=10, -3 dB; Source page 6 |
| Bandwidth | 3.5 kHz; G=100, -3 dB; Source page 6 |
| Bandwidth | 350 Hz; G=1000, -3 dB; Source page 6 |
| Slew rate | 0.16 V/µs; VS=5 V, VO=4 V step, G=1; Source page 6 |
| Slew rate | 0.05 V/µs; VS=5 V, VO=4 V step, G=100; Source page 6 |
| Settling time to 0.01% | 50 µs; VSTEP=4 V, G=1; Source page 6 |
| Settling time to 0.01% | 400 µs; VSTEP=4 V, G=100; Source page 6 |
| Settling time to 0.001% | 60 µs; VSTEP=4 V, G=1; Source page 6 |
| Settling time to 0.001% | 500 µs; VSTEP=4 V, G=100; Source page 6 |
| Overload recovery | 75 µs; 50% overdrive; Source page 6 |
| Reference input resistance | 300 kΩ; Reference input; Source page 6 |
| Reference input voltage range | V- to V+; Reference input; Source page 6 |
| Single supply voltage range | +1.8 to +5.5 V; Power supply; Source page 6 |
| Dual supply voltage range | ±0.9 to ±2.75 V; Power supply; Source page 6 |
| Quiescent current | typ 50 µA; max 75 µA; VIN=VS/2, TA=25°C; Source page 6 |
| Quiescent current over temperature | max 80 µA; VIN=VS/2, TA=-40°C to +125°C; Source page 6 |
| Pin function REF | Reference input; must be driven by low impedance or connected to ground; Pin 5; Source page 3 |
| Pin function RG | Gain setting pins; resistor between pins 1 and 8 for gains greater than 1; Pins 1 and 8; Source page 3 |
| Pin function VOUT | Output; Pin 6; Source page 3 |
| Datasheet Status | request_only |
Product Overview
The INA333 is a Texas Instruments instrumentation amplifier in the Signal_Chain category. It supports low-voltage operation with a recommended 1.8 to 5.5 V supply range, or dual supplies from ±0.9 to ±2.75 V. The specified operating temperature range is -40 to 125 °C, with absolute maximum operating temperature limits of -40 to 150 °C and a 150 °C junction temperature rating.
Gain is configured externally using a resistor between the RG pins, with G = 1 + (100 kΩ / RG) V/V and a supported gain range of 1 to 1000 V/V. Electrical parameters include input offset voltage of typically ±10±25/G µV, 50 pA typical input offset current, 70 pA typical input bias current, and 100||3 GΩ||pF differential and common-mode input impedance.
Package options are 8-pin VSSOP (DGK) and 8-pin WSON (DRG), each 3.00 mm x 3.00 mm. The REF pin is a reference input that must be driven by low impedance or connected to ground, and VOUT is provided on pin 6. Applications align with differential signal measurement where programmable gain, low supply current, high input impedance, and common-mode rejection are required.
Key Features
- 1.8 to 5.5 V recommended supply range
- Specified operation from -40 to 125 °C
- Gain range from 1 to 1000 V/V
- External RG resistor sets gain above 1
- Typical 50 µA quiescent current at 25°C
- 50 nV/√Hz input voltage noise density at G=100
- Typical CMRR reaches 115 dB at G=100 or 1000
- Bandwidth is 150 kHz at G=1
- REF input supports V- to V+ range
- 8-pin VSSOP and WSON package options
Typical Applications
- Differential signal measurement
- Sensor signal amplification
- Bridge signal conditioning
- Low-voltage signal chain inputs
- Programmable-gain analog front ends
- High-impedance signal acquisition
- Single-supply instrumentation circuits
Procurement Notes
When requesting a quote for INA333, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What supply range does the INA333 support?
The INA333 supports a recommended supply voltage range of 1.8 to 5.5 V. The electrical characteristics also list +1.8 to +5.5 V single-supply operation and ±0.9 to ±2.75 V dual-supply operation.
How is gain configured on the INA333?
Gain is configured with an external resistor between the RG pins. The datasheet equation is G = 1 + (100 kΩ / RG) V/V, and the specified gain range is 1 to 1000 V/V.
What packages are listed for INA333?
The listed package options are 8-pin VSSOP (DGK) and 8-pin WSON (DRG). Both package cases are specified as 3.00 mm x 3.00 mm.
What is the INA333 quiescent current?
The quiescent current is typically 50 µA and 75 µA maximum at VIN=VS/2 and TA=25°C. Across -40°C to +125°C, the listed maximum quiescent current is 80 µA.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 7, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.