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Analog Devices Inc. LT1210CT7#44PBF
- Part No.:
- LT1210CT7#44PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- TO-220-7 Formed Leads
- Datasheet:
-
LT1210CT7#44PBF.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT TO220-7
- Quantity:
- Payment:
- Shipping:
Inventory:930
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Product details
Overview
LT1210CT7#44PBF from Analog Devices is a 1.1A, 35MHz current feedback amplifier in TO-220-7 package, operating from ±5V to ±15V supplies, delivering high-output-current drive with 900V/µs slew rate and stable performance into 10,000pF capacitive loads - used in ADSL line drivers, video amplifiers, and high-current buffer stages.
For engineers reviewing the LT1210CT7#44PBF datasheet, LT1210CT7#44PBF pinout, LT1210CT7#44PBF application, or LT1210CT7#44PBF equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed alternatives, and supply-chain support for industrial and telecom signal-path designs.
Technical Context
The LT1210CT7#44PBF uses a current feedback architecture with separate high-impedance input stage (10MΩ) and low-impedance output stage, enabling wide bandwidth independent of closed-loop gain configuration. Its transresistance gain (75–260kΩ) and fast output stage allow >1V/ns transient response under optimal conditions.
It integrates shutdown control referenced to V+, allowing quiescent current reduction to <200µA via external resistor or logic interface, and includes internal thermal shutdown and short-circuit protection. The COMP pin enables optional compensation for capacitive loads up to 10,000pF without instability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 35MHz at AV = 2, RL = 10Ω - supports high-fidelity video and broadband communication signals up to ~17MHz fundamental frequency. |
| Slew Rate | 900V/µs at AV = 2, RL = 10Ω - enables clean 20VP-P output at 1MHz without slewing distortion. |
| Output Drive | 1.1A min into RL = 1Ω - drives low-Z cables (e.g., 75Ω coax) and reactive loads without gain compression. |
| Supply Range | ±5V to ±15V - compatible with legacy analog test equipment rails and telecom line card power domains. |
| Input Impedance | 10MΩ - minimizes loading on high-impedance sensor or DAC output stages. |
| Cap Load Stability | Stable with CL = 10,000pF - eliminates need for external isolation resistors when driving long traces or connector parasitics. |
| Shutdown Current | <200µA - reduces system standby power in multi-channel line driver modules. |
Pinout & Package
LT1210CT7#44PBF uses the T7 (7-lead TO-220) package with metal tab electrically connected to V+. Thermal resistance θJC = 5°C/W enables direct heatsink mounting for continuous 1.1A output operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier Output | Low-impedance current-source/sink node capable of ±1.1A; connects directly to load or cable. |
| 2 (V–) | Negative Supply Rail | Return path for internal bias and output stage; must be decoupled with ≥4.7µF tantalum + 100nF ceramic. |
| 3 (COMP) | Compensation Terminal | Optional connection point for 0.01µF capacitor to OUT to stabilize large capacitive loads (e.g., 10,000pF). |
| 4 (V+) | Positive Supply Rail | Primary power rail; tab is internally tied to V+, requiring insulated mounting if heatsink is grounded. |
| 5 (SHUTDOWN) | Shutdown Control Input | Voltage-referenced-to-V+ input; open or pulled to V+ disables amplifier (IS < 200µA); grounded enables full operation. |
| 6 (+IN) | Noninverting Input | High-Z (10MΩ), low-noise node; differential swing limited to ±6V by internal ESD clamp. |
| 7 (–IN) | Inverting Input | Current-summing node for feedback network; requires resistive feedback (no capacitive dominance) for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Supply Current | Quiescent current scaled from 9mA to 50mA using external RSD from SHUTDOWN to ground - enables bandwidth/power trade-off per channel. |
| Thermal Shutdown Protection | Junction temperature limit at 150°C with automatic cycling - prevents permanent damage during overload or poor heatsinking. |
| Short-Circuit Robustness | Thermally limited output short-circuit duration - survives sustained 0Ω load at ±15V with adequate heatsinking. |
| Wide Supply Compatibility | Operates from ±5V to ±15V without reconfiguration - simplifies reuse across 10V and 30V system rails. |
| High Input Impedance | 10MΩ input resistance - preserves signal integrity when buffering high-output-impedance sources like precision DACs. |
Applications
| ADSL Line Driver | Video Distribution Amplifier |
|---|---|
Use Scenario: Driving twisted-pair telephone lines in DSLAM line cards with 10–30MHz upstream/downstream signals and 100Ω characteristic impedance. IC Role / Device Role / Timing Role: Final-stage current feedback amplifier providing 1.1A peak output current and 35MHz bandwidth to meet ITU-T G.992.1 spectral mask requirements. Use Value: Eliminates need for discrete transistor output stages while maintaining THD < –70dB at 1MHz due to low distortion and high slew rate. | Use Scenario: Distributing composite NTSC video (4.2MHz BW) to multiple monitors or recording devices over 75Ω coaxial cables. IC Role / Device Role / Timing Role: Unity-gain buffer with differential phase < 0.1° and differential gain < 0.3% ensuring broadcast-grade color fidelity. Use Value: Maintains signal integrity across 4+ outputs without gain mismatch or timing skew, enabled by low output impedance and capacitive-load stability. |
| Test Equipment Output Stage | High-Current Precision Buffer |
Use Scenario: Generating programmable high-slew-rate waveforms (square, pulse) in automated test equipment for semiconductor validation. IC Role / Device Role / Timing Role: Output driver delivering 20VP-P, 1MHz signals into 10Ω loads with 900V/µs slew rate and minimal overshoot. Use Value: Achieves sub-10ns edge fidelity without external current boosters, reducing board area and calibration complexity. | Use Scenario: Isolating and amplifying low-noise sensor outputs (e.g., strain gauge bridges) before ADC sampling in industrial data acquisition systems. IC Role / Device Role / Timing Role: Low-drift, high-Z buffer with ±3mV offset and 3.0nV/√Hz input noise, configured for ×10 gain with precision resistors. Use Value: Preserves microvolt-level signal resolution while sourcing 1.1A to drive long PCB traces or multiplexed inputs without settling error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM6172IM/NOPB | Lower output current (100mA), higher GBW (100MHz), SO-8 package only - no TO-220 option or shutdown pin. | Not suitable for >100mA load or thermal-heavy environments; lacks capacitive-load compensation and adjustable supply current. | Select only for low-power, high-bandwidth small-signal buffering where 1.1A drive is unnecessary. |
| THS3091D | Higher slew rate (2000V/µs), same 1.1A output, but requires ±15V minimum and has no shutdown mode - SO-14 package only. | Cannot operate from ±5V; unsuitable for low-voltage telecom or portable test gear; no thermal shutdown or CL compensation. | Choose only when maximum slew rate is critical and ±15V rails and SO-14 footprint are acceptable. |
Compared with LM6172IM/NOPB and THS3091D, the LT1210CT7#44PBF uniquely combines TO-220 thermal robustness, ±5V compatibility, shutdown control, and 10,000pF capacitive-load stability - making it the only viable choice for high-current, thermally constrained, multi-rail line driver applications.
Availability
LT1210CT7#44PBF is available at Aetrix Electronics and suitable for ADSL line drivers, video distribution systems, and automated test equipment requiring stable component supply with full industrial temperature range support (0°C to 70°C).
Supply support for LT1210CT7#44PBF 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
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The LT1210CT7#44PBF belongs to ADI's Linear Technology legacy high-speed amplifier product line, designed specifically for demanding current-feedback applications requiring high output current, wide bandwidth, and rugged thermal behavior in telecom and instrumentation.
FAQ
What is the maximum capacitive load the LT1210CT7#44PBF can drive stably?
The LT1210CT7#44PBF is specified stable with up to 10,000pF capacitive load when the COMP pin is connected to OUT via a 0.01µF capacitor. Without compensation, stability degrades rapidly above ~200pF. This capability allows direct driving of long PCB traces, connectors, and coaxial cables without external isolation resistors - a key advantage over voltage-feedback op amps.
Does the LT1210CT7#44PBF support ±5V operation, and what are the performance trade-offs?
Yes, the LT1210CT7#44PBF supports ±5V operation with full functionality. At ±5V, typical output swing is ±2.5V into 10Ω, slew rate drops to ~400V/µs, and bandwidth remains usable (~27MHz at AV=2). The SO-16 variant is recommended for ±5V use due to lower thermal resistance, but the LT1210CT7#44PBF's TO-220 package still delivers reliable 1.1A drive at reduced voltage - ideal for compact, low-voltage line cards.
How does the shutdown feature work on the LT1210CT7#44PBF, and what is its impact on output impedance?
The LT1210CT7#44PBF shutdown pin is referenced to V+. When pulled to V+ or left open, the device enters shutdown with supply current <200µA and output impedance rises to ~70pF (capacitive). When grounded, full operation resumes. This high-impedance shutdown state isolates the output node cleanly - essential for multiplexed or shared-bus architectures where channel disabling must prevent loading or crosstalk.
Can the LT1210CT7#44PBF be used in inverting and non-inverting configurations, and how does slew rate differ?
Yes, the LT1210CT7#44PBF supports both configurations. Slew rate depends on gain topology: in inverting mode (AV = –1), it reaches 1100V/µs; in non-inverting mode (AV = 2), it is 900V/µs; at unity gain (AV = 1), it drops to ~770V/µs. This variation arises from current-feedback architecture - unlike voltage-feedback op amps, slew rate is not constant across gains, requiring careful selection of configuration for transient-critical applications.
What thermal considerations apply to the LT1210CT7#44PBF in TO-220 package during continuous 1.1A output?
The LT1210CT7#44PBF TO-220 package has θJC = 5°C/W. With 1.1A into 10Ω at ±15V, dissipation exceeds 1W - requiring a heatsink to maintain junction temperature below 150°C. Without heatsinking, ambient must stay below ~45°C for safe continuous operation. Thermal shutdown activates cyclically above threshold, protecting the part but disrupting signal integrity - hence heatsink sizing per application power profile is mandatory.
LT1210CT7#44PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-220-7 Formed Leads
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 900V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 35 MHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 35mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-7 Flow 44
LT1210CT7#44PBF FAQ
1.How can I place an order for LT1210CT7#44PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1210CT7#44PBF 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 LT1210CT7#44PBF reliable?
The price and inventory of LT1210CT7#44PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1210CT7#44PBF is usually 5 days.
3.What payment methods are accepted for LT1210CT7#44PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1210CT7#44PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1210CT7#44PBF?
LT1210CT7#44PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1210CT7#44PBF 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 LT1210CT7#44PBF?
For technical support, including LT1210CT7#44PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1210CT7#44PBF requirements.
6.How does Aetrix verify that LT1210CT7#44PBF is sourced from the original manufacturer or authorized distributors?
All LT1210CT7#44PBF 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 LT1210CT7#44PBF meets industry standards.
7.What is the process for return or replacement of LT1210CT7#44PBF?
All LT1210CT7#44PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1210CT7#44PBF, 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 LT1210CT7#44PBF part is unused and in its original packaging.
Return procedure for LT1210CT7#44PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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