My Inquiry
My Account
Texas Instruments OPA209AIDGKR
- Part No.:
- OPA209AIDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA209AIDGKR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,710
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA209AIDGKR from Texas Instruments is a precision single-channel operational amplifier optimized for low-noise, low-power signal conditioning in high-resolution data acquisition systems. It delivers 2.2 nV/√Hz input voltage noise at 1 kHz, 130 nVPP 0.1-Hz to 10-Hz noise, 18 MHz gain bandwidth, and rail-to-rail output swing with only 2.5 mA quiescent current per channel - enabling high-fidelity amplification in battery-powered instrumentation and sensor front-ends.
For engineers reviewing the OPA209AIDGKR datasheet, OPA209AIDGKR pinout, OPA209AIDGKR application, or OPA209AIDGKR equivalent, key selection criteria include its ultra-low voltage noise performance below 3 nV/√Hz, guaranteed 150 µV max offset voltage over temperature, ±2.25 V to ±18 V dual-supply operation, and compatibility with fast-settling 16-bit ADC driver topologies requiring <2.6 µs settling to 0.0015%.
Technical Context
The OPA209AIDGKR uses a SiGe bipolar process to achieve unity-gain stability without phase reversal, supporting precision closed-loop configurations down to G = 1. Its input stage features back-to-back diodes for differential input protection, and it maintains 120 dB CMRR and 132 dB open-loop gain across –40°C to 125°C.
Designed for demanding analog signal chains, the device achieves 6.4 V/µs slew rate and 2.1 µs 0.1% settling time on 10-V steps while driving 100 pF loads - critical for high-speed DAC output buffering and active filter implementations where transient fidelity and low distortion (<0.000025% THD+N) are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Noise Density | 2.2 nV/√Hz at 1 kHz - enables sub-1 µV RMS noise in bandwidth-limited sensor interfaces with source impedances <2 kΩ |
| 0.1–10 Hz Noise | 130 nVPP - supports DC-coupled precision measurement in weigh scales and medical front-ends without high-pass filtering |
| Gain Bandwidth | 18 MHz - allows stable G = 100 closed-loop gain up to ~180 kHz for anti-aliasing filter design |
| Quiescent Current | 2.5 mA max per channel - permits dual-channel operation from 3.3-V or 5-V rails with <50 mW total dissipation |
| Input Offset Voltage | ±150 µV max - ensures ≤0.0015% full-scale error in 16-bit systems with ±10-V output range |
| Slew Rate | 6.4 V/µs - sustains 10-Vpp signals at ≥100 kHz without slewing-induced distortion |
| Supply Range | ±2.25 V to ±18 V (or 4.5 V to 36 V single) - supports industrial 24-V systems and portable 3.3-V/5-V designs |
Pinout & Package
OPA209AIDGKR is packaged in an 8-pin VSSOP (DGK) with 3.00 mm × 3.00 mm body size and 0.65 mm lead pitch. This thermally enhanced, surface-mount package provides improved thermal resistance (RθJA = 142.6°C/W) versus SOIC and supports high-density PCB layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output - rail-to-rail capable, drives ≥10 kΩ loads to within 200 mV of rails at 2.2 mA |
| 2 | –IN | Inverting input - high-impedance node (10⁹ Ω || 2 pF); requires matched trace impedance in differential configurations |
| 3 | +IN | Noninverting input - same impedance as –IN; common-mode range extends 1.5 V beyond rails |
| 4 | V– | Negative supply terminal - must be decoupled with 0.1 µF ceramic capacitor placed ≤2 mm from pin |
| 5 | NC | No internal connection - left unconnected; not usable as thermal pad or ground tie |
| 6 | NC | No internal connection - electrically isolated; no routing or soldering required |
| 7 | NC | No internal connection - floating; does not affect ESD rating or thermal performance |
| 8 | V+ | Positive supply terminal - accepts up to 36 V total supply; requires local 0.1 µF decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 200 mV of either rail at 2.2 mA load - maximizes dynamic range in single-supply 3.3-V or 5-V systems |
| Unity-gain stable | No external compensation required for G ≥ 1 - simplifies layout and eliminates stability risks in buffer applications |
| No phase reversal | Output remains monotonic during input overdrive - prevents latch-up in PLL loop filters and transducer interfaces |
| Low 1/f noise corner | 0.1–10 Hz noise of 130 nVPP - enables accurate DC measurements without chopper stabilization artifacts |
| High PSRR | ≥120 dB at DC, >80 dB up to 100 kHz - rejects ripple from switching supplies in mixed-signal PCBs |
Applications
| PLL Loop Filter | High-Performance ADC Driver |
|---|---|
Use Scenario: Integrator stage in frequency synthesizer feedback path, filtering reference spurs and VCO phase noise. IC Role / Device Role / Timing Role: Precision integrator with ultra-low 1/f noise and minimal offset drift to maintain loop stability and jitter performance. Use Value: 130 nVPP 0.1–10 Hz noise and 150 µV max offset ensure sub-100 fs integrated jitter in 1–100 MHz synthesizers. |
Use Scenario: Driving SAR or sigma-delta ADC inputs with full-scale 10-Vpp differential signals at ≥1 MSPS. IC Role / Device Role / Timing Role: High-speed, low-distortion buffer that settles to 16-bit accuracy in 2.6 µs after 10-V step. Use Value: 6.4 V/µs slew rate and 18 MHz GBW enable clean acquisition windows with <0.000025% THD+N at 1 kHz. |
| Low-Noise Instrumentation Amplifier | Ultrasound Amplifier |
Use Scenario: First-stage gain block in medical-grade ECG or strain gauge signal chains with 10–100 kΩ source impedance. IC Role / Device Role / Timing Role: Low-noise, low-drift preamplifier providing initial gain before programmable gain stage. Use Value: 2.2 nV/√Hz noise dominates system noise floor below 2 kΩ source impedance, preserving SNR in 24-bit systems. |
Use Scenario: Time-gain compensation (TGC) amplifier in portable ultrasound beamformers processing 1–15 MHz echo signals. IC Role / Device Role / Timing Role: Wideband, low-distortion gain stage with fast overload recovery (<1 µs) for pulse-echo timing integrity. Use Value: 18 MHz GBW and 6.4 V/µs slew rate support linear amplification of 10-MHz bursts with minimal group delay variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA211AIDGKR | Lower 1/f noise (110 nVPP), higher GBW (45 MHz), but higher IQ (3.6 mA) and narrower supply range (±4.5 V to ±18 V) | Better for wideband AC-coupled applications >1 MHz; less suitable for ultra-low-power DC systems | Select OPA211AIDGKR when bandwidth >25 MHz or 0.1–10 Hz noise <120 nVPP is required |
| OPA189AIDBVR | Zero-drift architecture (0.005 µV/°C drift), lower offset (±5 µV), but higher voltage noise (4.2 nV/√Hz) and lower GBW (10 MHz) | Preferred for millivolt-level DC measurements over wide temperature ranges; not optimal for high-frequency signal integrity | Select OPA189AIDBVR when long-term offset stability <1 µV over –40°C to 125°C is critical |
Compared with OPA209AIDGKR, OPA211AIDGKR trades higher power for wider bandwidth and lower 1/f noise, while OPA189AIDBVR sacrifices voltage noise performance to achieve near-zero drift - making OPA209AIDGKR the balanced choice for general-purpose low-noise, low-power precision amplification.
Availability
OPA209AIDGKR is available at Aetrix Electronics and suitable for high-precision data acquisition, medical instrumentation, and industrial sensor signal conditioning requiring stable component supply and guaranteed long-term availability.
Supply support for OPA209AIDGKR 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 is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision op amp design and manufacturing.
The OPA209 series was engineered for high-resolution signal chains in test equipment, medical devices, and industrial automation - balancing ultra-low noise, low power, and robust DC precision without zero-drift complexity.
FAQ
What is the maximum supply voltage for OPA209AIDGKR?
The OPA209AIDGKR supports a total supply voltage range of ±2.25 V to ±18 V (dual) or 4.5 V to 36 V (single). Absolute maximum ratings specify 40 V total supply; exceeding this may cause permanent damage. Operation at ±18 V is fully characterized and supported across the full –40°C to 125°C temperature range.
Does OPA209AIDGKR require external compensation for unity-gain stability?
No, the OPA209AIDGKR is internally compensated for unity-gain stability. It operates reliably with closed-loop gains ≥1 without external capacitors or resistors. This eliminates layout sensitivity and ensures consistent phase margin (>80°) across process, voltage, and temperature variations.
What is the typical 0.1-Hz to 10-Hz noise performance of OPA209AIDGKR?
The OPA209AIDGKR delivers 130 nVPP typical 0.1-Hz to 10-Hz noise, with a maximum of 150 nVPP specified. This low 1/f noise enables high-accuracy DC and low-frequency measurements in applications such as precision weigh scales, thermopile amplifiers, and bridge sensor interfaces without chopper artifacts.
Can OPA209AIDGKR drive capacitive loads without oscillation?
Yes, the OPA209AIDGKR is characterized for stable operation with capacitive loads up to 100 pF in standard configurations. For loads >100 pF, isolation resistors (e.g., 10–50 Ω in series with the output) are recommended. The device's 6.4 V/µs slew rate and 18 MHz GBW provide robust transient response under capacitive loading.
What package type is used for OPA209AIDGKR?
OPA209AIDGKR is supplied in an 8-pin VSSOP package (DGK), measuring 3.00 mm × 3.00 mm with 0.65 mm lead pitch. This thermally enhanced package offers RθJA = 142.6°C/W and is RoHS-compliant, designed for automated SMT assembly and high-density PCB layouts.
OPA209AIDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 6.4V/µs
- Gain Bandwidth Product:
- 18 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 nA
- Voltage - Input Offset:
- 35 µV
- Current - Supply:
- 2.2mA
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA209AIDGKR FAQ
1.How can I place an order for OPA209AIDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA209AIDGKR 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 OPA209AIDGKR reliable?
The price and inventory of OPA209AIDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA209AIDGKR is usually 5 days.
3.What payment methods are accepted for OPA209AIDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA209AIDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA209AIDGKR?
OPA209AIDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA209AIDGKR 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 OPA209AIDGKR?
For technical support, including OPA209AIDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA209AIDGKR requirements.
6.How does Aetrix verify that OPA209AIDGKR is sourced from the original manufacturer or authorized distributors?
All OPA209AIDGKR 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 OPA209AIDGKR meets industry standards.
7.What is the process for return or replacement of OPA209AIDGKR?
All OPA209AIDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA209AIDGKR, 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 OPA209AIDGKR part is unused and in its original packaging.
Return procedure for OPA209AIDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA209AIDGKR 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…
