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Texas Instruments TL026CDR
- Part No.:
- TL026CDR
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL026CDR.pdf
- Description:
- IC AMP AGC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,437
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Product details
Overview
TL026CDR from Texas Instruments is a monolithic differential high-frequency amplifier with integrated automatic gain control (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). It serves as a core gain-control element in TV IF stages, magnetic storage read channels, and video amplifiers.
For engineers reviewing the TL026CDR datasheet, TL026CDR pinout, TL026CDR application, or TL026CDR equivalent, key selection considerations include its differential input/output architecture, AGC voltage-dependent gain attenuation, emitter-follower output drive capability, and SOIC-8 packaging compatible with high-frequency layout practices.
Technical Context
The TL026CDR implements a two-stage monolithic amplifier with internal current-source biasing for high common-mode and supply-voltage rejection. Its gain is electronically controlled via differential voltage applied between AGC and REF OUT pins, enabling wideband (DC to 50 MHz) AGC response without external compensation components.
Emitter-follower outputs provide low-impedance drive into capacitive loads, while input and output impedances remain independent of AGC voltage. The device exhibits low output common-mode sensitivity to AGC control voltages and maintains excellent gain stability under varying supply and temperature conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Gain | 38 dB typ - provides sufficient small-signal amplification before AGC compression in IF/RF chains |
| –3 dB Bandwidth | 50 MHz - supports VHF/UHF IF frequencies and fast video pulse amplification |
| AGC Range | 50 dB typ - enables robust dynamic range compression over multiple decades of input signal variation |
| Supply Voltage | ±3 V to ±8 V - dual-supply operation supports rail-to-rail signal swing and noise margin in analog systems |
| Operating Temperature | 0°C to 70°C - commercial-grade rating suitable for consumer electronics and industrial equipment |
| Input Offset Current | 0.4 µA min / 5 µA typ - ensures stable DC operating point in high-impedance AGC feedback networks |
| Output Resistance | 20 Ω - low impedance enables direct driving of 50 Ω transmission lines or coaxial cables |
Pinout & Package
TL026CDR is housed in an 8-pin SOIC (D) package with 1.27 mm pitch, 3.9 mm width, and 1.75 mm max height-optimized for high-frequency PCB layout with short trace lengths and ground-plane integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting differential input | Accepts complementary input signal; paired with Pin 2 for balanced RF/IF signal reception |
| 2 (IN+) | Non-inverting differential input | Primary signal input node; matched impedance and phase response to Pin 1 |
| 3 (AGC) | Automatic gain control input | Differential voltage relative to REF OUT sets gain level; 360 mV total swing yields full 50 dB AGC range |
| 4 (VCC–) | Negative supply rail | Connects to –3 V to –8 V supply; referenced to midpoint of dual supplies per datasheet note |
| 5 (OUT–) | Inverting differential output | Complementary output terminal; forms differential pair with Pin 6 for noise-rejecting signal delivery |
| 6 (OUT+) | Non-inverting differential output | Main output node; emitter-follower stage provides low-Z drive into 50 Ω or capacitive loads |
| 7 (REF OUT) | Internal reference voltage output | Provides 1.3–1.5 V DC reference for AGC biasing; used to generate thermally tracked VAGC quiescent point |
| 8 (VCC+) | Positive supply rail | Connects to +3 V to +8 V supply; midpoint defines 0 V reference for differential signaling |
Key Features
| Feature | Design Value |
|---|---|
| Differential input/output architecture | Rejects common-mode noise in RF/IF environments and enables balanced signal routing on PCBs |
| Wideband AGC control (DC–50 MHz) | Allows real-time gain adjustment across entire signal bandwidth without phase distortion or peaking |
| No external compensation required | Reduces BOM count and layout complexity; simplifies design of stable high-frequency amplifiers |
| Emitter-follower output stage | Drives 50 Ω coaxial lines or >100 pF capacitive loads directly-eliminates need for external buffer stages |
| Current-source biasing | Delivers high CMRR (60–86 dB) and PSRR (50–70 dB), critical for noisy power supply environments |
Applications
| TV IF Amplifier | Magnetic Storage Read Channel |
|---|---|
Use Scenario: Amplifying intermediate frequency signals in analog television tuners prior to demodulation. IC Role / Device Role / Timing Role: Differential IF amplifier with AGC to maintain constant video output amplitude despite antenna signal fluctuations. Use Value: 50 dB AGC range compensates for multipath fading and variable signal strength; 50 MHz bandwidth preserves chroma/luma fidelity. | Use Scenario: Boosting weak analog readback signals from magnetic tape or disk heads before digitization. IC Role / Device Role / Timing Role: High-speed, low-distortion preamplifier with AGC to normalize signal amplitude across varying head-to-media distances. Use Value: Low input offset current (0.4 µA min) prevents baseline drift in high-impedance head circuits; differential outputs reject motor noise. |
| Video Pulse Amplifier | RF Signal Conditioning |
Use Scenario: Amplifying composite video pulses with minimal rise time degradation and overshoot. IC Role / Device Role / Timing Role: Wideband differential amplifier providing flat group delay and low phase distortion for timing-critical video waveforms. Use Value: 4.5 ns rise time and 6 ns propagation delay ensure sub-microsecond fidelity for sync pulses and active video transitions. | Use Scenario: Front-end gain control in UHF receiver modules where signal levels vary widely due to antenna coupling or environmental factors. IC Role / Device Role / Timing Role: Differential RF amplifier with electronic gain adjustment to prevent ADC saturation and preserve SNR. Use Value: Input/output impedances independent of AGC voltage ensure consistent matching network performance across full gain range. |
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 | Through-hole PDIP-8; slightly lower 45 MHz bandwidth; no REF OUT pin-requires external reference for AGC biasing | Legacy TV tuner designs where board space is unconstrained and manual AGC calibration is acceptable | Choose NE592N only when replacing legacy sockets or when SOIC footprint is incompatible with existing layout |
| TL592CP | Same SOIC-8 package; improved 60 MHz bandwidth; higher 45 mA supply current; REF OUT pin present but Vref = 1.2 V (vs. 1.4 V typ for TL026CDR) | New designs requiring extended bandwidth and tighter thermal tracking of AGC reference voltage | Prefer TL592CP for new designs targeting >45 MHz signal paths; verify AGC loop stability with revised Vref tolerance |
Compared with NE592N and TL592CP, TL026CDR offers optimal balance of bandwidth (50 MHz), AGC linearity, and SOIC-8 manufacturability for cost-sensitive consumer IF stages-while retaining pin-compatible AGC interface topology and identical reference generation methodology.
Availability
TL026CDR is available at Aetrix Electronics and suitable for TV IF amplification, magnetic storage read channel conditioning, and video pulse amplification requiring stable component supply across long-lifecycle consumer electronics programs.
Supply support for TL026CDR 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 company founded in 1930, specializing in analog ICs, embedded processors, and high-reliability components for industrial, automotive, and consumer markets.
The TL026CDR belongs to TI's legacy high-frequency analog amplifier family, engineered specifically for AGC-enabled RF/IF signal chains in broadcast and data storage systems where gain stability and wideband linearity are critical.
FAQ
What is the maximum recommended supply voltage for TL026CDR?
The absolute maximum supply voltage for TL026CDR is ±8 V, but the recommended operating range is ±3 V to ±6 V. Operating at ±6 V ensures optimal gain, bandwidth, and thermal performance while staying within safe dissipation limits (464 mW at TA = 70°C in SOIC-8). Exceeding ±6 V may increase distortion and reduce reliability without meaningful performance benefit.
How does the AGC function work in TL026CDR?
The TL026CDR AGC function adjusts gain by applying a differential voltage (VAGC – Vref) between the AGC pin and REF OUT pin. A 360 mV swing (±180 mV around Vref ≈ 1.4 V) produces full 50 dB gain variation. Vref is internally generated and appears at Pin 7, enabling thermally tracked AGC biasing-no external reference needed. This architecture ensures stable gain control across temperature and unit-to-unit variation.
Can TL026CDR drive a 50 Ω load directly?
Yes, TL026CDR can drive a 50 Ω load directly via its emitter-follower output stage, which has 20 Ω output resistance. Test data confirms 3 VPP output swing into 2 kΩ, and application circuits (Figures 6–7) demonstrate use with 50 Ω terminations. For best high-frequency performance, keep output traces short and use proper RF layout techniques-including ground plane and 0.1 µF bypass capacitors at VCC pins.
What is the purpose of the REF OUT pin on TL026CDR?
The REF OUT pin (Pin 7) provides a stable 1.3–1.5 V internal reference voltage used to bias the AGC control input. It enables differential AGC voltage generation (VAGC – Vref), ensuring thermal tracking and eliminating dependence on absolute Vref value. This allows external AGC circuitry to generate VAGC using a simple resistor divider from Vref-making TL026CDR self-calibrating across process and temperature variations.
Is TL026CDR pin-compatible with TL592CP?
TL026CDR and TL592CP share identical SOIC-8 pinout and functional assignment (IN+, IN–, AGC, VCC–, OUT–, OUT+, REF OUT, VCC+), making them pin-compatible replacements. However, TL592CP has higher bandwidth (60 MHz vs. 50 MHz), higher supply current (45 mA vs. 27 mA typ), and slightly lower Vref (1.2 V vs. 1.4 V typ), requiring verification of AGC loop stability and power budget in existing designs.
TL026CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
TL026CDR FAQ
1.How can I place an order for TL026CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL026CDR 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 TL026CDR reliable?
The price and inventory of TL026CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL026CDR is usually 5 days.
3.What payment methods are accepted for TL026CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL026CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL026CDR?
TL026CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL026CDR 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 TL026CDR?
For technical support, including TL026CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL026CDR requirements.
6.How does Aetrix verify that TL026CDR is sourced from the original manufacturer or authorized distributors?
All TL026CDR 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 TL026CDR meets industry standards.
7.What is the process for return or replacement of TL026CDR?
All TL026CDR units undergo pre-shipment inspection (PSI). If there is an issue with TL026CDR, 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 TL026CDR part is unused and in its original packaging.
Return procedure for TL026CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL026CDR Tags
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LT6205IS5#TRPBF
Analog Devices Inc.
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LT6206IMS8#TRPBF
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LT6552IS8#PBF
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LT1252CS8#PBF
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AD818ARZ-REEL7
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MAX4310EUA+
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AD829ARZ
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AD810ARZ
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MAX4310ESA+
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MAX4313ESA+
Analog Devices Inc./Maxim Integrated
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