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Texas Instruments TL026CPSR
- Part No.:
- TL026CPSR
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TL026CPSR.pdf
- Description:
- IC AMP AGC 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,561
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Product details
Overview
TL026CPSR from Texas Instruments is a monolithic two-stage differential high-frequency amplifier with AGC, designed for RF/IF signal conditioning in analog front-ends. It delivers 38 dB typical peak gain, 50 MHz −3 dB bandwidth, and 50 dB typical AGC range while maintaining low harmonic distortion and stable gain across temperature (0°C to 70°C). Its emitter-follower outputs drive capacitive loads in TV IF, magnetic tape, and video AGC circuits.
For engineers reviewing the TL026CPSR datasheet, TL026CPSR pinout, TL026CPSR application, or TL026CPSR equivalent, key selection criteria include differential voltage amplification (55–115 V/V), AGC-controlled gain attenuation, common-mode output voltage stability (3.25–4.25 V), and SO package compatibility with automated SMT assembly.
Technical Context
The TL026CPSR implements internal current-source biasing for high supply-voltage and common-mode rejection (CMRR ≥50 dB at 100 kHz), enabling robust operation in noisy analog signal chains. Its AGC control operates differentially via VAGC – Vref, where Vref is internally generated (1.3–1.5 V) at the REF OUT pin and tracks thermally across devices.
Gain variation is achieved through signal summation-based variable attenuation-not resistive divider or FET-based methods-ensuring wide-bandwidth linearity up to 50 MHz and low phase distortion. All stages are fully DC-coupled, requiring no external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Gain | 38 dB typ - provides sufficient open-loop amplification for multi-stage AGC loops without cascaded instability |
| −3 dB Bandwidth | 50 MHz - supports VHF/UHF IF stages and fast-pulse video amplification |
| AGC Range | 50 dB typ - enables >300 mV total VAGC swing (±180 mV around Vref) for wide dynamic-range signal leveling |
| Supply Voltage Range | ±3 V to ±8 V - accommodates dual-rail systems from low-power portable to full-swing industrial designs |
| Common-Mode Output Voltage | 3.25–4.25 V - centers output near mid-supply for optimal headroom into downstream ADCs or comparators |
| Input Resistance (AGC/IN±) | 8–30 kΩ - ensures predictable loading of AGC feedback networks and source impedances |
| Supply Current | 22–30 mA - defines thermal budget for compact PCB layouts with multiple channels |
Pinout & Package
TL026CPSR is housed in an 8-pin Small Outline (SO) package (PS drawing), 3.9 mm width, 1.75 mm max height, RoHS-compliant NIPDAU lead finish, MSL Level-1 (unlimited floor life), and optimized for high-speed analog layout with ground-plane routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Differential input inverting terminal | Accepts balanced RF/IF signal; matched impedance to IN+ for common-mode noise rejection |
| 2 (REF OUT) | Internal reference voltage output | Provides 1.3–1.5 V DC reference for AGC biasing; must be used to generate VAGC = Vref ± ΔV |
| 3 (VCC+) | Positive supply rail | Connects to +3 V to +8 V; bypass with 0.1 µF capacitor near pin for high-frequency stability |
| 4 (OUT−) | Differential output inverting terminal | Emitter-follower output; drives 2 kΩ load with 3–4 VPP swing; requires short trace routing |
| 5 (OUT+) | Differential output non-inverting terminal | Complementary emitter-follower output; maintains amplitude/phase symmetry with OUT− |
| 6 (AGC) | Automatic gain control input | Accepts differential control voltage (VAGC – Vref); gain decreases as VAGC rises above Vref |
| 7 (IN+) | Differential input non-inverting terminal | Primary signal input; matched to IN− for >60 dB CMRR at 100 kHz |
| 8 (VCC−) | Negative supply rail | Connects to −3 V to −8 V; symmetric rail required for full differential operation |
Key Features
| Feature | Design Value |
|---|---|
| Differential input/output architecture | Enables rejection of common-mode interference in RF/IF signal paths without external baluns |
| Voltage-controlled AGC with internal Vref | Eliminates need for external precision reference; Vref tracks thermally and device-to-device |
| Emitter-follower output stage | Drives up to 2 kΩ load or 100 pF capacitance directly-no external buffer required for scope probing or ADC interfacing |
| No external compensation required | Reduces BOM count and layout area; simplifies design validation for production-grade analog modules |
| Current-source biasing | Delivers >50 dB supply-voltage rejection ratio (kSVR) and stable quiescent current over temperature |
Applications
| TV IF Amplifier | Magnetic Tape Playback AGC |
|---|---|
|
Use Scenario: Amplifying intermediate frequency signals in analog television tuners before demodulation. IC Role / Device Role / Timing Role: Differential IF amplifier with real-time gain adjustment to maintain constant video envelope despite antenna signal fluctuations. Use Value: 50 MHz bandwidth preserves chroma/luma separation; 50 dB AGC range compensates for multipath fading and weak-channel reception. |
Use Scenario: Stabilizing playback signal amplitude from analog magnetic tape heads with varying tape speed and oxide wear. IC Role / Device Role / Timing Role: High-linearity AGC amplifier in the analog signal path prior to A/D conversion or analog processing. Use Value: Low harmonic distortion (<0.5% THD typical) prevents audible artifacts; differential inputs reject head crosstalk and motor noise. |
| Video Signal Amplifier | Disk File Read Channel |
|
Use Scenario: Boosting composite or component video signals in broadcast equipment or test instrumentation. IC Role / Device Role / Timing Role: Wideband differential driver ensuring flat group delay and minimal phase shift across 0–50 MHz. Use Value: 6 ns propagation delay and 4.5 ns rise time support NTSC/PAL timing integrity; emitter-follower outputs interface directly to 75 Ω coaxial lines. |
Use Scenario: Amplifying low-level analog readback signals from magnetic disk drive heads before equalization and decoding. IC Role / Device Role / Timing Role: First-stage gain block with programmable attenuation to accommodate varying head sensitivities and media defects. Use Value: Input offset voltage ≤1.5 V ensures DC-coupled operation; low broadband noise (12 µV rms) preserves SNR in high-density storage channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential high-frequency amplifier with AGC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NE592N | PDIP-8 only; wider supply range (±4 V to ±18 V); higher ICC (35 mA typ); no integrated Vref pin | Requires external reference for AGC; better suited for high-voltage legacy RF designs with discrete biasing | Choose NE592N when operating above ±8 V or needing higher output drive capability at cost of increased power and layout complexity |
| TL592CP | Same pinout as TL026C but includes internal AGC rectifier; lower bandwidth (30 MHz); fixed 40 dB AGC range | Integrated AGC detection reduces external components but sacrifices bandwidth and control flexibility | Choose TL592CP for simplified single-chip AGC loop where 30 MHz bandwidth suffices and Vref generation is not needed |
Compared with NE592N and TL592CP, TL026CPSR offers superior bandwidth (50 MHz vs. ≤30 MHz), tighter Vref tracking for stable AGC bias, and SO packaging for modern SMT production-making it optimal for space-constrained, high-fidelity analog signal conditioning where precision gain control is critical.
Availability
TL026CPSR is available at Aetrix Electronics and suitable for TV IF amplifiers, magnetic tape playback systems, and video signal conditioning requiring stable component supply, long-lifecycle support, and RoHS-compliant SO packaging.
Supply support for TL026CPSR 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, embedded processing, and digital signal technologies since 1930.
The TL026CPSR belongs to TI's legacy high-frequency analog amplifier family, engineered for precision AGC in broadcast, data storage, and instrumentation applications where differential signaling and thermal stability are essential.
FAQ
What is the function of the REF OUT pin on the TL026CPSR?
The REF OUT pin on the TL026CPSR provides a stable 1.3–1.5 V internal reference voltage used to bias the AGC control input. This voltage tracks thermally and across devices, allowing external circuitry to generate VAGC as Vref ± ΔV-ensuring consistent AGC behavior without external precision references. The TL026CPSR relies on this pin for accurate differential gain control; leaving it unconnected degrades AGC linearity and temperature stability.
Can the TL026CPSR operate with single-supply configurations?
No, the TL026CPSR requires dual symmetric supplies (e.g., ±6 V) to maintain proper common-mode input/output voltage ranges and internal current-source biasing. Its specified VICR (±1 V) and VOC (3.25–4.25 V) assume balanced rails; single-supply operation violates absolute maximum ratings and causes clipping or latch-up. For single-rail designs, consider alternatives like the TL592CP with modified biasing-but note its reduced bandwidth and different pinout.
What is the maximum recommended peak-to-peak output voltage for the TL026CPSR?
The TL026CPSR delivers up to 4 VPP into a 2 kΩ load under nominal conditions (VCC± = ±6 V), but design guidance recommends limiting peak output to ≤1.5 V to ensure reliable diode-based AGC feedback operation and avoid distortion from output stage saturation. Exceeding 3 VPP risks clipping, especially with capacitive loads or elevated temperatures, and may degrade harmonic performance critical in video and IF applications.
How does the AGC control voltage (VAGC) affect gain in the TL026CPSR?
In the TL026CPSR, gain varies linearly with the differential voltage VAGC – Vref: as VAGC increases above Vref (up to +180 mV), gain decreases from maximum to minimum across a 50 dB range. This relationship is monotonic and repeatable, enabling precise closed-loop AGC design. The TL026CPSR does not respond to absolute VAGC level alone-only its deviation from Vref-so external circuitry must preserve Vref as the AGC bias centerpoint.
Is the TL026CPSR pin-compatible with the TL026CD or TL026CP variants?
Yes, the TL026CPSR shares identical pinout and electrical specifications with TL026CD (SOIC-D) and TL026CP (PDIP), differing only in package type (PS vs. D vs. P) and reel/tube packaging. All three use the same die, same marking (TL026C or T026), and same absolute maximum and recommended operating conditions. Layouts designed for TL026CD can accept TL026CPSR with no footprint changes, though solder profile must match MSL Level-1 requirements.
TL026CPSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Automatic Gain Control (AGC)
- Output Type:
- Differential
- Number of Circuits:
- 1
- -3db Bandwidth:
- 50 MHz
- Slew Rate:
- -
- Current - Supply:
- 22 mA
- Current - Output / Channel:
- 4 mA
- Voltage - Supply, Single/Dual (±):
- ±3V ~ 8V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SO
TL026CPSR FAQ
1.How can I place an order for TL026CPSR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL026CPSR 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 TL026CPSR reliable?
The price and inventory of TL026CPSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL026CPSR is usually 5 days.
3.What payment methods are accepted for TL026CPSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL026CPSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL026CPSR?
TL026CPSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL026CPSR 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 TL026CPSR?
For technical support, including TL026CPSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL026CPSR requirements.
6.How does Aetrix verify that TL026CPSR is sourced from the original manufacturer or authorized distributors?
All TL026CPSR 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 TL026CPSR meets industry standards.
7.What is the process for return or replacement of TL026CPSR?
All TL026CPSR units undergo pre-shipment inspection (PSI). If there is an issue with TL026CPSR, 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 TL026CPSR part is unused and in its original packaging.
Return procedure for TL026CPSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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