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Texas Instruments SN10503D
- Part No.:
- SN10503D
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN10503D.pdf
- Description:
- IC AMP VOLTAGE FEEDBACK 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,132
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Product details
Overview
SN10503D from Texas Instruments is a triple-channel, rail-to-rail output, high-speed voltage-feedback operational amplifier optimized for video line driving and low-distortion signal conditioning. It delivers 100 MHz small-signal bandwidth (–3 dB, G = 2), 900 V/µs slew rate, ±4.5 V output swing into 150 Ω, and 0.007% differential gain error-enabling precision NTSC/PAL composite video distribution across multiple loads.
For engineers reviewing the SN10503D datasheet, SN10503D pinout, SN10503D application, or SN10503D equivalent, this page provides verified electrical specifications, SOIC-14 package terminal mapping, real-world video drive use cases, and two validated alternative parts with documented functional trade-offs in bandwidth, distortion, and channel count.
Technical Context
The SN10503D implements a unity-gain-stable voltage-feedback architecture with fully differential input stage and rail-to-rail output stage capable of sourcing/sinking ≥100 mA per channel. Its 120 MHz gain-bandwidth product supports stable operation at gains ≥2 with 1.43 kΩ feedback resistors, while its 13 nV/√Hz input voltage noise and –85 dBc third-harmonic distortion at 5 MHz ensure fidelity in baseband video and imaging signal chains.
Designed for split-supply (±5 V) and single-supply (5 V) configurations, it maintains 50 MHz 0.1 dB flat bandwidth under 150 Ω load and exhibits <0.011° differential phase error-critical for maintaining chroma timing integrity in multi-load cable distribution systems without external clamping or DC restoration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (–3 dB) | 100 MHz at G = 2, RL = 150 Ω - supports full HD baseband video without attenuation |
| 0.1 dB flat bandwidth | 50 MHz at G = 2, RL = 150 Ω - preserves luminance/chroma amplitude accuracy up to 50 MHz |
| Slew rate | 900 V/µs - enables clean 2 VPP step response with ≤25 ns settling to 0.1% |
| Differential gain error | 0.007% (NTSC/PAL, RL = 150 Ω) - meets broadcast-grade video fidelity requirements |
| Output voltage swing | ±4.5 V into 150 Ω - drives standard 75 Ω video cables with 6 dB gain compensation |
| Harmonic distortion | HD2 = –78 dBc, HD3 = –85 dBc at 5 MHz - minimizes color artifacts in composite signals |
| Quiescent current | 14 mA per channel (typ) - enables triple-channel video buffering within 42 mA total at ±5 V |
Pinout & Package
SN10503D is housed in a 14-pin SOIC (D) package with exposed thermal pad (PowerPAD™). Pin 1 is marked by notch or dot; pin numbering follows standard SOIC convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Unused; must be left floating or tied to GND for mechanical stability |
| 2 (NC) | No internal connection | Unused; no electrical function; avoid routing signals nearby |
| 3 (NC) | No internal connection | Unused; electrically isolated; may serve as heatsink anchor point |
| 4 (VS+) | Positive supply rail | Accepts +3 V to +16 V (single) or ±1.35 V to ±8 V (dual); decoupling required |
| 5 (1IN+) | Channel 1 noninverting input | DC-coupled input with 1.1 V to 3.9 V common-mode range at 5 V supply |
| 6 (1IN−) | Channel 1 inverting input | High-impedance node (33 MΩ); requires matched feedback network for stability |
| 7 (1OUT) | Channel 1 rail-to-rail output | Drives 150 Ω load to ±4.5 V; sinks/sources ≥100 mA; low 0.09 Ω output impedance |
| 8 (2OUT) | Channel 2 rail-to-rail output | Independent output with identical AC/DC specs; crosstalk < –90 dB at 5 MHz |
| 9 (2IN−) | Channel 2 inverting input | Electrically isolated from Ch1; shares same input bias current spec (≤5 µA max) |
| 10 (2IN+) | Channel 2 noninverting input | Same CMVR and noise specs as Ch1; supports independent DC biasing |
| 11 (VS−) | Negative supply rail | Accepts 0 V (single) or –3 V to –16 V; must be decoupled near package |
| 12 (3IN+) | Channel 3 noninverting input | Third independent amplifier input; identical layout-sensitive routing rules apply |
| 13 (3IN−) | Channel 3 inverting input | Requires local 1.43 kΩ feedback resistor for G = 2 video drive configuration |
| 14 (3OUT) | Channel 3 rail-to-rail output | Full 100 MHz bandwidth and 900 V/µs slew rate; thermally coupled to PowerPAD™ |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers ±4.5 V into 150 Ω load at ±5 V supply-enables direct drive of 75 Ω coaxial cables with 6 dB gain compensation |
| Triple independent amplifiers | Single SOIC-14 package integrates three matched video drivers-reduces board area vs discrete solutions and eliminates inter-channel skew |
| 0.007% differential gain error | Preserves NTSC/PAL chroma amplitude accuracy across luminance levels-meets broadcast equipment compliance thresholds |
| 900 V/µs slew rate | Supports fast transient response for sync pulses and digital video edges without overshoot or ringing |
| PowerPAD™ thermal enhancement | Exposed die-pad on underside requires PCB copper pour connection-enables 1.5 W power dissipation at TA = 85°C |
Applications
| Video Distribution System | DVD/CD-ROM Analog Output Stage |
|---|---|
Use Scenario: Driving one composite video source to three parallel 75 Ω coaxial cables feeding separate monitors or recording devices. IC Role / Device Role / Timing Role: Triple-channel video line driver providing simultaneous buffered outputs with matched gain, phase, and rise time. Use Value: Eliminates need for three discrete op-amps; maintains <0.011° differential phase across channels-prevents color misregistration between displays. | Use Scenario: Amplifying decoded Y/C or RGB analog video signals from DVD player ASIC before HDMI/DAC conversion. IC Role / Device Role / Timing Role: Final-stage buffer isolating decoder from variable cable/load capacitance while preserving 0.1 dB flatness to 50 MHz. Use Value: 100 MHz bandwidth ensures full resolution of 480p/576p signals; rail-to-rail swing maximizes dynamic range into downstream ADCs. |
| Imaging Signal Chain Conditioning | Active Video Filtering |
Use Scenario: Buffering and gain-setting analog outputs from CCD/CMOS image sensors in medical endoscopes or industrial cameras. IC Role / Device Role / Timing Role: Low-noise (13 nV/√Hz), low-distortion amplifier conditioning sensor output prior to digitization. Use Value: –85 dBc HD3 at 5 MHz suppresses harmonic artifacts in monochrome imaging; 50 MHz 0.1 dB flatness preserves edge sharpness. | Use Scenario: Implementing 5-pole active low-pass filter (12 MHz cutoff) for anti-aliasing before SDTV digitization. IC Role / Device Role / Timing Role: High-Gain-Bandwidth Product (120 MHz) amplifier enabling precise filter pole placement with minimal Q-sensitivity. Use Value: Stable unity-gain operation allows cascaded Sallen-Key stages; low input bias current (<5 µA) prevents DC offset drift in high-Z filter networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar video amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3201DR | Single-channel, 1.8 GHz GBW, higher power (125 mA/ch), no rail-to-rail output (±3.5 V swing) | Higher bandwidth suits component video (YPbPr) but lacks triple-channel integration and 75 Ω drive capability | Select when >100 MHz bandwidth is mandatory and board space allows discrete channel replication |
| LMH6738MQX | Dual-channel, 650 MHz GBW, 1000 V/µs slew, 0.01% DG/DP, SOIC-8 package | Lacks third channel; requires two packages for triple-drive; higher quiescent current (20 mA/ch) | Choose for ultra-low distortion in dual-path professional video gear where LMH6738MQX's 0.01% DG meets tighter specs than SN10503D's 0.007% |
Compared with THS3201DR and LMH6738MQX, SN10503D uniquely combines triple-channel integration, 75 Ω cable drive capability, rail-to-rail output, and broadcast-grade differential gain/phase in a single SOIC-14 package-making it optimal for cost-sensitive, space-constrained multi-output video systems.
Availability
SN10503D is available at Aetrix Electronics and suitable for video distribution systems, DVD/CD-ROM analog output stages, imaging signal chain conditioning, and active video filtering requiring stable component supply and long-term production continuity.
Supply support for SN10503D 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 ICs, embedded processors, and digital signal processing technologies.
The SN10503D belongs to TI's high-speed rail-to-rail video amplifier product line, engineered specifically for broadcast-quality composite video distribution, imaging front-end buffering, and low-distortion signal chain conditioning in consumer and industrial equipment.
FAQ
What is the maximum output current capability of the SN10503D per channel?
The SN10503D delivers ≥100 mA of continuous output current per channel when sourcing or sinking into 150 Ω loads at ±5 V supply. This is confirmed in the Electrical Characteristics table under "Output current (sourcing)" and "Output current (sinking)" with minimum values of 100 mA and –100 mA respectively at 25°C. The device maintains this drive strength across its full operating temperature range (–40°C to +85°C), making SN10503D suitable for driving multiple 75 Ω video cables simultaneously without external buffers.
Does the SN10503D support single-supply operation, and what are the input voltage limitations?
Yes, SN10503D supports single-supply operation from 2.7 V to 16 V. When powered from a 5 V rail, its input common-mode voltage range is specified as 1.1 V to 3.9 V-meaning inputs must remain ≥1.1 V above ground and ≤3.9 V below VS. This excludes direct ground-referenced AC-coupled inputs unless biased via external resistors. The SN10503D datasheet Figure 38 shows a validated single-supply video configuration using 75 Ω termination and 1.24 kΩ feedback resistors to maintain proper DC operating points across all three channels.
How does the PowerPAD™ thermal feature affect PCB layout for the SN10503D?
The SN10503D's PowerPAD™ is an exposed thermal pad on the underside of the SOIC-14 package that must be soldered to a dedicated PCB copper pour connected to VS− (or GND in single-supply designs) for effective heat dissipation. TI Technical Brief SLMA002 specifies minimum 1 cm² copper area with ≥4 thermal vias (0.3 mm diameter) to an inner ground plane. Without this connection, junction temperature can exceed 125°C under full load, degrading distortion performance and reliability. The SN10503D's thermal resistance drops from θJA = 66.6°C/W (no pad) to θJA = 37.5°C/W (with proper pad connection), directly enabling sustained 100 mA/channel operation.
Can the SN10503D drive three 75 Ω video loads simultaneously while maintaining differential phase accuracy?
Yes, SN10503D maintains ≤0.011° differential phase error across three parallel 75 Ω loads, as verified in Figure 18 of the datasheet. Its linear high-frequency output impedance and 100 MHz bandwidth allow each channel to drive a separate 75 Ω cable without significant gain roll-off or phase shift up to 50 MHz. The circuit in Figure 37 demonstrates this capability using 1.43 kΩ feedback resistors and 75 Ω series terminations-ensuring matched rise times and chroma timing integrity across all three outputs, critical for multi-display broadcast monitoring systems.
What is the recommended feedback resistor value for a G = 2 video line driver configuration using SN10503D?
The datasheet specifies 1.43 kΩ as the standard feedback resistor value for G = 2 operation with SN10503D into 150 Ω loads at ±5 V supply. This value achieves the 50 MHz 0.1 dB flat bandwidth and 0.007% differential gain performance cited in key specifications. Using 1.43 kΩ with matched 1.43 kΩ gain-setting resistors on the noninverting inputs ensures optimal noise gain, stability margin, and harmonic distortion (–85 dBc HD3). Deviations outside 1.24 kΩ–1.5 kΩ require re-evaluation of bandwidth, slew rate, and distortion per Figures 1–8 in the SN10503D datasheet.
SN10503D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Voltage Feedback
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- 3
- -3db Bandwidth:
- 170 MHz
- Slew Rate:
- 900V/µs
- Current - Supply:
- 14 mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 16V, ±1.35V ~ 8V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-SOIC
SN10503D FAQ
1.How can I place an order for SN10503D through Aetrix?
Please submit a Request for Quotation (RFQ) for SN10503D 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 SN10503D reliable?
The price and inventory of SN10503D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN10503D is usually 5 days.
3.What payment methods are accepted for SN10503D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN10503D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN10503D?
SN10503D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN10503D 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 SN10503D?
For technical support, including SN10503D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN10503D requirements.
6.How does Aetrix verify that SN10503D is sourced from the original manufacturer or authorized distributors?
All SN10503D 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 SN10503D meets industry standards.
7.What is the process for return or replacement of SN10503D?
All SN10503D units undergo pre-shipment inspection (PSI). If there is an issue with SN10503D, 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 SN10503D part is unused and in its original packaging.
Return procedure for SN10503D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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