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Texas Instruments RFQ AVAILABLE

OPA211IDGKR

IC OPAMP GP 1 CIRCUIT 8VSSOP

Part Number: OPA211IDGKR

Manufacturer: Texas Instruments

Category: Instrumentation, Op Amps, Buffer Amps

Package: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: OPA211IDGKR.pdf

Description: IC OPAMP GP 1 CIRCUIT 8VSSOP

Select Quantity Stock: 12,500

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Qty.	Unit Price	Ext. Price
2500+	$5.14696	$12867.40

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

OPA211IDGKR 1.1nV/√Hz Noise, Low Power, Precision Operational Amplifier

A comprehensive technical overview of the OPA211IDGKR, a low-power precision operational amplifier from Texas Instruments featuring 1.1nV/√Hz voltage noise density, 80 MHz gain bandwidth product (G = 100), 27 V/µs slew rate, and rail-to-rail output. Covers device function, core features, electrical specifications, 8-lead VSSOP package, pin configuration, typical applications, and replacement selection guidance.

Texas Instruments 8-VSSOP 4.5V to 36V

Device Classification Precision Operational Amplifier

Part Number: OPA211IDGKR

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +125°C

PRODUCT OVERVIEW

What Is the OPA211IDGKR?

OPA211IDGKR is a low-power precision operational amplifier from Texas Instruments, part of the OPAx211 family. The device achieves an exceptionally low voltage noise density of 1.1 nV/√Hz with a supply current of only 3.6 mA, making it ideal for low-noise, power-sensitive applications.

The OPA211IDGKR operates with a wide supply voltage range of 4.5 V to 36 V single supply, or ±2.25 V to ±18 V dual supply. It features a gain bandwidth product of 80 MHz (G = 100) and 45 MHz (G = 1), a slew rate of 27 V/µs, and rail-to-rail output swing that maximizes dynamic range.

The device delivers 700 ns settling time to 16-bit accuracy over a 10 V output swing, making it suitable for driving high-precision 16-bit ADCs or buffering high-resolution DAC outputs. Additional features include a shutdown function for power savings, unity-gain stability, and a wide common-mode rejection ratio (CMRR) of 114 dB. The OPA211IDGKR is offered in an 8-lead VSSOP package and is rated for operation from –40°C to +125°C. The device is RoHS3 compliant, REACH unaffected, and in active production.

Low Noise 1.1 nV/√Hz voltage noise density at 1 kHz for noise-sensitive signal chains.

Wide Supply Range 4.5 V to 36 V single supply or ±2.25 V to ±18 V dual supply.

Rail-to-Rail Output Maximizes dynamic range with rail-to-rail output swing.

DEVICE HIGHLIGHTS

Key Features and Benefits of OPA211IDGKR

Ultralow Noise

1.1 nV/√Hz voltage noise density at 1 kHz and 80 nVPP (0.1 Hz to 10 Hz) input voltage noise for precision low-noise signal chains.

High Speed & Bandwidth

80 MHz gain bandwidth product (G = 100), 45 MHz (G = 1), and 27 V/µs slew rate provide excellent AC performance.

Low Power

Operates with only 3.6 mA supply current per channel, making it suitable for power-sensitive applications.

Rail-to-Rail Output

Rail-to-rail output swing maximizes dynamic range, ideal for driving ADCs and DACs.

Precision DC Performance

Input offset voltage of 30 µV (typ) and 125 µV (max), offset drift of 0.35 µV/°C, and 114 dB CMRR ensure high accuracy.

Compact VSSOP-8 Package

Available in an 8-lead VSSOP package with a 3.00mm × 3.00mm footprint, ideal for space-constrained designs.

REFERENCE DATA

Technical Specifications for OPA211IDGKR

Part Number	OPA211IDGKR	Manufacturer	Texas Instruments
Device Type	Precision Operational Amplifier	Number of Circuits	1
Amplifier Type	General Purpose	Output Type	Rail-to-Rail
Gain Bandwidth Product (G = 100)	80 MHz	Gain Bandwidth Product (G = 1)	45 MHz
Slew Rate	27 V/µs	Settling Time (16-bit, 10V)	700 ns
Voltage Noise Density	1.1 nV/√Hz (1 kHz)	Input Voltage Noise (0.1-10 Hz)	80 nVPP
Input Bias Current	60 nA	Input Offset Voltage	30 µV (typ), 125 µV (max)
Offset Voltage Drift	0.35 µV/°C (typ)	CMRR	114 dB
PSRR	140 dB	THD+N (G=1, 1 kHz)	-136 dB
Supply Current (Iq)	3.6 mA	Output Current per Channel	30 mA
Single Supply Voltage Range	4.5 V to 36 V	Dual Supply Voltage Range	±2.25 V to ±18 V
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	Supplier Device Package	8-VSSOP
Package Body Size	3.00mm × 3.00mm	Mounting Type	Surface Mount
Operating Temperature	-40°C to +125°C	Moisture Sensitivity Level	MSL 2 (1 Year)
RoHS	ROHS3 Compliant	REACH Status	REACH Unaffected
Packaging	Tape & Reel (2,500 per Reel)	Product Status	Active
Device Marking	OPA211	Lead Free / Pb-Free	Lead Free

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use.

DESIGN REFERENCE

Circuit Considerations for OPA211IDGKR

Power Supply & Decoupling

The OPA211IDGKR requires careful power supply design for optimal performance:

Supply Voltage: Operates with single supply from 4.5 V to 36 V, or dual supply from ±2.25 V to ±18 V
Decoupling: Place ceramic capacitors (0.1 µF and 10 µF) close to the supply pins (Pin 7 for V+, Pin 4 for V-) to minimize supply noise
Low Quiescent Current: 3.6 mA typical supply current makes the device suitable for low-power designs
Shutdown Function: Pin 8 (SHDN) enables shutdown for additional power savings

PCB and Signal Integrity Guidance

Precision amplifier performance depends on layout and component selection:

Feedback Resistors: Use low-value feedback resistors to minimize noise contribution; keep traces short and close to the inverting input
Ground Plane: Use a solid ground plane to minimize parasitic capacitance and ensure low-inductance return paths
Guard Ring: For high-impedance applications, consider using a guard ring around the inputs to reduce leakage current
Stability: The device is unity-gain stable, but capacitive loads may require an isolation resistor at the output
Thermal Pad: In SON packages (DRG), the exposed thermal pad must be soldered to the PCB and connected to V-
Verify the recommended PCB footprint from the official datasheet prior to production

8-LEAD VSSOP (3mm × 3mm)

Pin Configuration Reference for OPA211IDGKR

OPA211

VSSOP TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The VSSOP package has 8 pins with a 3.00mm × 3.00mm body size. Device marking for the OPA211IDGKR is "OPA211". Pins 1 and 5 are no connects (NC).

1 NC No internal connection; can be left floating or connected to any voltage between V- and V+

2 -IN Inverting Input

3 +IN Noninverting Input

4 V- Negative Power Supply

5 NC No internal connection; can be left floating or connected to any voltage between V- and V+

6 OUT Output

7 V+ Positive Power Supply

8 SHDN Shutdown, active high. Device enabled when V(SHDN) ≤ (V+) - 3 V; disabled when V(SHDN) ≥ (V+) - 0.35 V

APPLICATION AREAS

Typical Applications for OPA211IDGKR

PLL Loop Filters

Low voltage noise and low current noise make this device ideal for phase-locked loop (PLL) loop filter applications.

16-Bit ADC Drivers

700 ns settling time to 16-bit accuracy over a 10 V output swing makes the OPA211 suitable for driving high-precision 16-bit ADCs.

DAC Output Buffers

Buffers high-resolution DAC outputs with low distortion and excellent DC precision.

Active Filters

High bandwidth and low noise make this device ideal for active filter circuits.

Professional Audio Preamplifiers

Low noise and low distortion (THD+N: -136 dB) suit professional audio and instrumentation applications.

Medical Instrumentation

Low noise and precision DC performance suit medical diagnostic equipment including ultrasound and infrared detectors.

REPLACEMENT GUIDANCE

Selecting an Alternative for OPA211IDGKR

A replacement for the OPA211IDGKR should not be selected solely by product category. The electrical characteristics, package, and pin configuration must be evaluated against the specific circuit requirements. The following alternatives are documented in the official Texas Instruments datasheet and product pages.

Low voltage noise: 1.1 nV/√Hz

Low quiescent current: 3.6 mA

Gain bandwidth product: 80 MHz

Slew rate: 27 V/µs

Package: 8-VSSOP (3mm × 3mm)

Temperature range: –40°C to 125°C

Supply: 4.5V–36V single, ±2.25V–±18V dual

Rail-to-rail output, shutdown function

Packaging alternatives (same package, different carrier):

Part Number	Package	Carrier	SPQ
OPA211IDGKR	8-VSSOP	Tape & Reel	2,500
OPA211IDGKT	8-VSSOP	Tape & Reel	250

All alternative part numbers listed above are documented in the official Texas Instruments datasheet. The OPA211IDGKR is the standard tape-and-reel packaging variant (2,500 units per reel). OPA211IDGKT is the small-quantity tape-and-reel variant (250 units per reel) for prototyping or small-batch production. Both share identical electrical specifications and package type.

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MANUFACTURER INFORMATION

Texas Instruments

The OPA211 (OPA211IDGKR) belongs to the OPAx211 family of low-power precision operational amplifiers from Texas Instruments. The device achieves exceptionally low 1.1-nV/√Hz noise density with a supply current of only 3.6 mA, making it ideal for low-noise, power-sensitive signal chain applications. The OPAx211 family offers outstanding AC performance with 80 MHz gain bandwidth, 27 V/µs slew rate, and 700 ns settling time to 16-bit accuracy, making it suitable for driving high-precision ADCs, buffering DAC outputs, and PLL loop filter applications. The OPA211 is available in single-channel (OPA211) and dual-channel (OPA2211) versions across multiple package options.

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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Specifications

Product Attribute: Attribute Value

Part Number: OPA211IDGKR

Manufacturer: Texas Instruments

Package: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

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: 27V/µs

Gain Bandwidth Product: 80 MHz

-3db Bandwidth: -

Current - Input Bias: 60 nA

Voltage - Input Offset: 30 µV

Current - Supply: 3.6mA

Current - Output / Channel: 30 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

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OPA211IDGKR Procurement and Technical Support

OPA211IDGKR is manufactured by Texas Instruments. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

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Submit an RFQ to request the latest stock, price, lead time, batch information, alternative parts, package confirmation or technical documents for OPA211IDGKR.

Part Number: OPA211IDGKR

Manufacturer: Texas Instruments

Package: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Category: Instrumentation, Op Amps, Buffer Amps

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