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Texas Instruments OPA606KP
- Part No.:
- OPA606KP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OPA606KP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,104
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Product details
Overview
OPA606KP from Texas Instruments (formerly Burr-Brown) is a wide-bandwidth dielectrically isolated FET (Difet®) operational amplifier designed for high-precision, low-distortion signal conditioning in demanding analog front-ends. It delivers 12 MHz gain-bandwidth, 35 V/µs slew rate, and 10 pA max input bias current at +25°C, with laser-trimmed offset voltage ≤500 µV - enabling accurate DC-coupled amplification in data acquisition and test equipment.
For engineers reviewing the OPA606KP datasheet, OPA606KP pinout, OPA606KP application, or OPA606KP equivalent, this page provides verified package mapping (Plastic DIP), confirmed thermal and electrical specs across 0°C to +70°C, real-world settling time (1.0 µs to 0.1%), and validated alternatives for optoelectronics, audio, and instrumentation designs.
Technical Context
The OPA606KP uses dielectric isolation to achieve ultra-low input bias current and stable operation over temperature without junction-based drift artifacts. Its internal unity-gain compensation ensures stability with minimal external components, while laser-trimmed thin-film resistors directly improve offset voltage accuracy and low-frequency noise performance.
This monolithic Difet® architecture separates input FETs from substrate leakage paths, enabling >1013 Ω || 1 pF differential input impedance and <1.3 µVrms integrated noise (10 Hz–10 kHz). It operates from ±5 V to ±18 V supplies and maintains full-signal bandwidth up to 470 kHz at 20 Vp-p into 2 kΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 12 MHz typical - supports stable closed-loop gain ≥10 at >1 MHz without peaking. |
| Slew Rate | 35 V/µs typical - enables clean 10 V step response within 2.1 µs at 0.01% settling. |
| Input Bias Current | 10 pA max at +25°C - preserves signal integrity in high-impedance photodiode or sensor interfaces. |
| Input Offset Voltage | 500 µV max - reduces DC error in precision gain stages without manual trimming. |
| Total Harmonic Distortion | 0.0035% typical at 10 kHz - meets low-distortion requirements for audio preamplifiers and RIAA circuits. |
| Common-Mode Input Range | ±11.6 V at ±15 V supply - allows rail-to-rail input handling in single-supply-derived systems. |
| Quiescent Current | 10.5 mA max - balances speed and power in thermally constrained instrumentation layouts. |
Pinout & Package
OPA606KP is housed in an 8-pin Plastic Dual-In-Line Package (PDIP), with pin 1 designated as Offset Trim (Pin 1), pin 2 as Inverting Input (–In), pin 3 as Noninverting Input (+In), pin 4 as –VCC, pin 5 as Offset Trim (Pin 5), pin 6 as Output, pin 7 as +VCC, and pin 8 as No Connection (NC). The case is electrically isolated and not internally connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Trim | Connects to one end of external 100 kΩ potentiometer for fine offset adjustment; affects drift by ~0.5 µV/°C per mV adjusted. |
| 2 | Inverting Input (–In) | High-impedance FET input node; requires guarding to prevent leakage currents exceeding 10 pA. |
| 3 | Noninverting Input (+In) | Matched high-impedance input; used in noninverting configurations or as reference point in differential topologies. |
| 4 | –VCC | Negative supply terminal; must be bypassed with 0.1 µF ceramic capacitor near pin. |
| 5 | Offset Trim | Connects to other end of same trim potentiometer as Pin 1; forms balanced nulling network. |
| 6 | Output | Capable of ±12 V swing into 2 kΩ; stable with ≥1000 pF capacitive load in unity-gain configuration. |
| 7 | +VCC | Positive supply terminal; requires local 0.1 µF ceramic bypass to minimize high-frequency noise coupling. |
| 8 | No Connection (NC) | Internally unconnected; must remain floating - no routing or grounding permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Difet® dielectric isolation | Eliminates substrate leakage paths, enabling <10 pA bias current and stable operation over –40°C to +85°C ambient. |
| Laser-trimmed thin-film resistors | Reduces initial offset voltage to ≤500 µV and improves long-term drift to ±5 µV/°C over full spec range. |
| Unity-gain stable architecture | Operates without external compensation in G = +1, –1, or higher closed-loop configurations up to 12 MHz GBW. |
| High CMRR & PSRR | 96 dB PSRR and 95 dB CMRR at DC ensure immunity to supply ripple and common-mode interference in noisy environments. |
| Guard-compatible layout support | Pin 2 and Pin 3 are physically isolated on die; PCB guard ring around inputs suppresses board leakage >10 pA. |
Applications
| Optoelectronics Interface | Data Acquisition Front-End |
|---|---|
|
Use Scenario: Amplifying low-current output from high-speed photodiodes in fiber-optic receivers or laser rangefinders. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with minimal added noise and distortion. Use Value: 10 pA input bias current prevents signal loss in >1 MΩ feedback networks; 12 MHz bandwidth supports >1 Mbps optical data rates. |
Use Scenario: Conditioning sensor signals (e.g., strain gauges, RTDs) before ADC sampling in industrial PLC modules. IC Role / Device Role / Timing Role: Precision buffer and gain stage ensuring accurate DC-coupled signal transfer with low THD. Use Value: 0.0035% THD at 10 kHz and 500 µV offset enable 16-bit+ effective resolution without calibration overhead. |
| Test Equipment Amplifier | Audio Preamplifier |
|
Use Scenario: Output driver in automated test equipment (ATE) requiring fast settling and low glitch energy. IC Role / Device Role / Timing Role: Unity-gain stable output buffer delivering 10 V steps with 1.0 µs (0.1%) settling time. Use Value: 35 V/µs slew rate and 12 MHz GBW ensure fidelity for pulse, ramp, and square-wave stimulus generation. |
Use Scenario: RIAA-equalized phono preamplifier stage for moving-magnet cartridges in high-fidelity audio systems. IC Role / Device Role / Timing Role: Low-noise, low-distortion gain block implementing precise frequency-dependent amplification. Use Value: 1.3 µVrms integrated noise (10 Hz–10 kHz) and <0.0035% THD preserve dynamic range and harmonic integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision wideband op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA627AP | Higher GBW (16 MHz), lower noise (12 nV/√Hz), but 25 pA bias current and TO-99 only. | Better for audio and RF IF stages where noise dominates; unsuitable for >100 kΩ sensor interfaces. | Select OPA627AP when bandwidth/noise trade-off favors speed over ultra-low bias current. |
| AD825ARZ | 100 MHz GBW, 200 V/µs slew, but 200 pA bias current and higher THD (0.005%). | Preferred for video or fast pulse amplification; not recommended for precision DC-coupled sensor front-ends. | Choose AD825ARZ only when >50 MHz bandwidth is mandatory and input impedance >10 MΩ is not required. |
Compared with OPA606KP, OPA627AP offers superior noise and speed but sacrifices input impedance critical for photodiode or piezoelectric sensors; AD825ARZ delivers extreme bandwidth at the cost of offset stability and distortion - making OPA606KP the optimal balance for precision wideband DC-coupled applications.
Availability
OPA606KP is available at Aetrix Electronics and suitable for optoelectronics interfaces, data acquisition front-ends, and test equipment requiring stable component supply with guaranteed long-term continuity and traceable sourcing.
Supply support for OPA606KP 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 its precision analog portfolio, including legacy Difet® technology. TI is a global leader in high-performance analog ICs with deep expertise in low-noise, low-drift op-amp design.
The OPA606KP belongs to TI's legacy precision wideband op-amp family, engineered specifically for applications demanding ultra-low input bias current, low distortion, and stable DC accuracy - especially in photodiode amplification, instrumentation, and high-fidelity audio.
FAQ
What is the maximum operating temperature range for the OPA606KP?
The OPA606KP is specified for 0°C to +70°C ambient operation and rated for continuous operation from –40°C to +85°C. Its plastic DIP package has a θJA of 155°C/W, and junction temperature must remain below +175°C under all conditions. Derating is required above +70°C ambient per the absolute maximum ratings table.
Does the OPA606KP require external compensation for unity-gain stability?
No, the OPA606KP is internally compensated for unity-gain stability and operates reliably in G = +1, G = –1, and higher closed-loop configurations without external phase compensation. Its design ensures stability with ≥1000 pF capacitive load in unity-gain mode, simplifying layout in high-speed buffer applications.
How does the OPA606KP's input bias current compare to the OPA606KM and OPA606LM variants?
The OPA606KP specifies ≤25 pA max input bias current at +25°C (warmed-up condition), matching the OPA606KM and OPA606LM. All three variants share identical Difet® die and laser-trimmed topology; differences lie solely in package (Plastic DIP vs TO-99) and screening - not in core electrical parameters like bias current or offset voltage.
Can the OPA606KP drive heavy capacitive loads without oscillation?
Yes - the OPA606KP is characterized for stability with up to 1000 pF capacitive load in unity-gain configuration. For loads >1000 pF, a small series resistor (e.g., 10–50 Ω) between output and capacitance restores phase margin. Layout best practices (short traces, local bypassing) remain essential to maintain stability at full bandwidth.
Is pin 8 (NC) on the OPA606KP safe to ground or leave unconnected?
Pin 8 is a true No Connection (NC) - it is internally unconnected and must remain floating. Grounding or routing pin 8 risks introducing parasitic coupling or violating internal isolation boundaries. The official datasheet explicitly prohibits connection, and doing so may degrade CMRR, increase noise, or cause unexpected offset shifts in the OPA606KP.
OPA606KP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Difet®
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 30V/µs
- Gain Bandwidth Product:
- 12 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 8 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 6.5mA
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OPA606KP FAQ
1.How can I place an order for OPA606KP through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA606KP 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 OPA606KP reliable?
The price and inventory of OPA606KP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA606KP is usually 5 days.
3.What payment methods are accepted for OPA606KP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA606KP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA606KP?
OPA606KP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA606KP 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 OPA606KP?
For technical support, including OPA606KP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA606KP requirements.
6.How does Aetrix verify that OPA606KP is sourced from the original manufacturer or authorized distributors?
All OPA606KP 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 OPA606KP meets industry standards.
7.What is the process for return or replacement of OPA606KP?
All OPA606KP units undergo pre-shipment inspection (PSI). If there is an issue with OPA606KP, 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 OPA606KP part is unused and in its original packaging.
Return procedure for OPA606KP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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