My Inquiry
My Account
Analog Devices Inc. LT1252CN8#PBF
- Part No.:
- LT1252CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Video Amps and Modules
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1252CN8#PBF.pdf
- Description:
- IC AMP CURRENT FEEDBACK 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,819
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1252CN8#PBF from Analog Devices (formerly Linear Technology) is a low-cost current feedback video amplifier optimized for RGB and composite video cable driving at ±5V supply. It delivers 100MHz bandwidth, 250V/µs output slew rate at AV = 2, 0.01% differential gain and 0.09° differential phase (RL = 150Ω), enabling high-fidelity analog video signal distribution in PC workstation interconnects.
For engineers reviewing the LT1252CN8#PBF datasheet, LT1252CN8#PBF pinout, LT1252CN8#PBF application, or LT1252CN8#PBF equivalent, key selection criteria include its ±2V to ±14V dual-supply flexibility, 85mW power dissipation at ±5V, DIP-8 package thermal resistance (θJA = 150°C/W), and verified NTSC video performance with cascaded stage resolution down to 0.01%.
Technical Context
The LT1252CN8#PBF employs a current feedback architecture with high-impedance noninverting input (RIN = 1–10MΩ) and low-impedance inverting input, enabling stable gain-setting via external RF/RG resistors without degrading bandwidth. Its wide supply range (±2V to ±14V) supports both legacy ±5V and higher-voltage video systems.
It achieves flat frequency response (0.1dB gain flatness to 30MHz) and low distortion (–60dBc 2nd harmonic at 10MHz) through optimized internal compensation and high slew rate (250V/µs at AV = 2), making it suitable for driving 75Ω coaxial cables and reactive video loads without peaking or settling errors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 100MHz at ±5V supply - supports full HD baseband video signal integrity up to ~30MHz fundamental with margin. |
| Differential Gain / Phase | 0.01% / 0.09° at RL = 150Ω, ±5V - meets NTSC broadcast-grade linearity for composite video. |
| Slew Rate | 250V/µs at AV = 2 - ensures <5.2ns rise/fall time for 1VP-P signals, minimizing edge distortion in RGB timing. |
| Supply Range | ±2V to ±14V dual supply - enables operation from low-power ±5V embedded systems to high-swing ±12V broadcast gear. |
| Power Dissipation | 85mW at ±5V - allows use in thermally constrained DIP-8 PCB layouts without forced cooling. |
| Input Offset Voltage | 5–15mV typical - contributes <±15mV DC error in DC-coupled video paths; AC-coupling recommended for precision. |
| Output Current | 30–55mA max - drives two parallel 75Ω cables (150Ω load) while maintaining linearity and settling. |
Pinout & Package
LT1252CN8#PBF uses an 8-lead plastic DIP (N8) package with 0.300″ wide body, θJA = 150°C/W, and operating junction temperature up to 150°C. Pin 1 is top-left corner marker; pins 3 and 6 are no-connect (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | –IN (Inverting Input) | Low-impedance node for feedback network connection; sets gain with RG/RF ratio in inverting configuration. |
| 2 | +IN (Noninverting Input) | High-impedance input (1–10MΩ); used for noninverting gain stages or as reference point in single-supply biasing. |
| 3 | NC | No internal connection; must be left unconnected per datasheet to avoid parasitic coupling. |
| 4 | V– (Negative Supply) | Connects to negative rail (e.g., –5V); defines lower common-mode input range and output swing limit. |
| 5 | VOUT (Output) | Low-impedance buffered output capable of sourcing/sinking ≥30mA into 75Ω loads. |
| 6 | NC | No internal connection; electrically isolated; no routing or grounding required. |
| 7 | V+ (Positive Supply) | Connects to positive rail (e.g., +5V); determines upper output voltage swing and power consumption. |
| 8 | NC | No internal connection; confirmed unused in N8 package per Linear Technology SS schematic and package drawing. |
Key Features
| Feature | Design Value |
|---|---|
| Current Feedback Architecture | Enables constant bandwidth across gain settings (e.g., 100MHz at AV = 1 or AV = 10), unlike voltage-feedback op-amps. |
| NTSC-Optimized Linearity | 0.01% differential gain error ensures minimal color saturation shift in composite video transmission. |
| 75Ω Cable Drive Capability | Stable into reactive 75Ω coaxial loads without external isolation resistors or ferrite beads. |
| Wide Supply Flexibility | Operates from ±2V (4V total) to ±14V (28V total), supporting legacy and industrial video equipment rails. |
| Low Power Consumption | 8.5–18mA supply current at ±5V enables integration into multi-channel video boards without thermal overload. |
Applications
| RGB Video Distribution | Composite Video Driver |
|---|---|
Use Scenario: Driving RGBHV signals from GPU outputs to monitor inputs over 1–3m coaxial cables in desktop workstations. IC Role / Device Role / Timing Role: Final-stage buffer amplifier providing gain (AV = 2), impedance matching, and slew-limited edge control. Use Value: Maintains 0.1dB flatness to 30MHz and <5.2ns edge fidelity, preventing color fringing and sync pulse jitter. |
Use Scenario: Amplifying NTSC composite video from set-top box encoders to RF modulators or CRT display inputs. IC Role / Device Role / Timing Role: Precision gain block with calibrated differential gain/phase for Y/C signal path integrity. Use Value: Achieves 0.01% differential gain and 0.09° phase error-meeting FCC Part 15 subcarrier fidelity requirements. |
| IF Stage Gain Block | Single-Supply Video Interface |
Use Scenario: Fixed-gain amplification in 30–70MHz intermediate frequency stages of analog TV tuners or CATV demodulators. IC Role / Device Role / Timing Role: Wideband current-feedback gain stage with minimal group delay variation across IF band. Use Value: 100MHz bandwidth and 3.5ns propagation delay ensure phase coherence in cascaded IF filters and mixers. |
Use Scenario: AC-coupled video amplification in 5V-only embedded systems (e.g., kiosk displays, medical imaging UIs). IC Role / Device Role / Timing Role: Noninverting amplifier biased via resistor divider on +IN, with output DC-blocking capacitor. Use Value: Supports 14Hz–60MHz bandwidth (per TA03) using 5V rail only, eliminating need for negative supply generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar video amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1252CS8#TRPBF | Same die, SO-8 package (θJA = 100°C/W), surface-mount compatible, identical electrical specs. | Required for automated SMT assembly; better thermal performance but requires PCB rework for through-hole designs. | Select when board space or assembly process mandates SOIC; not drop-in for DIP footprints. |
| LMH6702MF/NOPB | Higher bandwidth (1.8GHz), higher supply current (14.5mA), no guaranteed differential gain spec; voltage-feedback topology. | Better for >100MHz sampling or ADC driver roles; lacks NTSC-validated linearity data for composite video. | Choose for wideband test equipment or digitization front-ends-not for broadcast video fidelity-critical paths. |
Compared with LT1252CN8#PBF, LT1252CS8#TRPBF offers identical video performance in a smaller footprint with improved thermal resistance, while LMH6702MF/NOPB trades NTSC linearity guarantees for raw speed-making the LT1252CN8#PBF optimal for cost-sensitive, standards-compliant analog video systems.
Availability
LT1252CN8#PBF is available at Aetrix Electronics and suitable for RGB video distribution, composite video driver circuits, IF stage gain blocks, and single-supply video interfaces requiring stable component supply across industrial and embedded design cycles.
Supply support for LT1252CN8#PBF 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 acquired Linear Technology in 2017 and maintains full product support, datasheet archives, and application engineering for legacy Linear parts including the LT1252 family.
The LT1252 series was designed specifically for cost-sensitive analog video signal conditioning-emphasizing NTSC/PAL linearity, 75Ω cable drive, and wide-supply operation without sacrificing bandwidth or slew rate.
FAQ
What is the maximum load capacitance the LT1252CN8#PBF can drive stably?
The LT1252CN8#PBF is characterized for stable operation into 75Ω resistive loads and standard coaxial cables (typically ≤100pF/m). While not explicitly rated for capacitive loads, application note AN47 shows stable behavior with ≤100pF total capacitance when using proper layout practices and series output resistors. For >100pF, consider adding a 10–22Ω series resistor at the LT1252CN8#PBF output to isolate capacitive reactance.
Does the LT1252CN8#PBF support single-supply operation?
Yes, the LT1252CN8#PBF supports single-supply operation using AC-coupled configurations, as shown in Typical Application TA03 and TA04. With a 5V rail, biasing the +IN pin to VCC/2 via resistor divider and AC-coupling input/output enables 14Hz–60MHz bandwidth. However, DC-coupled single-supply use is not recommended due to limited input common-mode range near rails.
What is the thermal resistance (θJA) of the LT1252CN8#PBF package?
The LT1252CN8#PBF uses an 8-lead plastic DIP (N8) package with a specified junction-to-ambient thermal resistance (θJA) of 150°C/W under standard JEDEC 2S2P test conditions. This value assumes no copper pour or heatsinking; adding 1-inch² of 2oz copper on the V+ and V– pads reduces effective θJA by ~30°C/W in typical layouts.
Can the LT1252CN8#PBF replace the LT1227 in existing designs?
No-the LT1227 includes an enable/shutdown pin and higher performance (lower distortion, wider bandwidth), while the LT1252CN8#PBF has no shutdown function and is optimized for cost-sensitive video rather than precision instrumentation. The pinouts differ: LT1227 uses pin 5 for SHDN, whereas LT1252CN8#PBF pin 5 is VOUT. Direct replacement would require PCB modification and functional validation.
Is the LT1252CN8#PBF RoHS compliant and lead-free?
Yes, the LT1252CN8#PBF is RoHS compliant and features lead-free (Pb-free) terminations per Analog Devices' product change notice PCN-14-001. The "#PBF" suffix explicitly denotes Pb-free packaging, with matte tin plating over copper leads and halogen-free molding compound meeting IEC 61249-2-21 standards.
LT1252CN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- Current Feedback
- Output Type:
- -
- Number of Circuits:
- 1
- -3db Bandwidth:
- 282 MHz
- Slew Rate:
- 125V/µs
- Current - Supply:
- 8.5 mA
- Current - Output / Channel:
- 55 mA
- Voltage - Supply, Single/Dual (±):
- 4V ~ 28V, ±2V ~ 14V
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-PDIP
LT1252CN8#PBF FAQ
1.How can I place an order for LT1252CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1252CN8#PBF 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 LT1252CN8#PBF reliable?
The price and inventory of LT1252CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1252CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1252CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1252CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1252CN8#PBF?
LT1252CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1252CN8#PBF 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 LT1252CN8#PBF?
For technical support, including LT1252CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1252CN8#PBF requirements.
6.How does Aetrix verify that LT1252CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1252CN8#PBF 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 LT1252CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1252CN8#PBF?
All LT1252CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1252CN8#PBF, 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 LT1252CN8#PBF part is unused and in its original packaging.
Return procedure for LT1252CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1252CN8#PBF Tags
-
LT6552CS8#PBF
Analog Devices Inc.
-
LT6205IS5#TRPBF
Analog Devices Inc.
-
LT6206IMS8#TRPBF
Analog Devices Inc.
-
LT6552CDD#PBF
Analog Devices Inc.
-
LT6552IS8#PBF
Analog Devices Inc.
-
LT1252CS8#PBF
Analog Devices Inc.
-
AD818ARZ-REEL7
Analog Devices Inc.
-
MAX4310EUA+
Analog Devices Inc./Maxim Integrated
-
AD829ARZ
Analog Devices Inc.
-
AD810ARZ
Analog Devices Inc.
-
MAX4310ESA+
Analog Devices Inc./Maxim Integrated
-
MAX4313ESA+
Analog Devices Inc./Maxim Integrated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
