Texas Instruments SN10502DGN

Overview

SN10502DGN from Texas Instruments is a dual-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, 0.014% differential gain, and ±4.5 V output swing into 150 Ω with ±5 V supplies - enabling precise composite video distribution in DVD players and imaging systems.

For engineers reviewing the SN10502DGN datasheet, SN10502DGN pinout, SN10502DGN application, or SN10502DGN equivalent, key selection criteria include its dual-channel MSOP-8-PP package with PowerPAD™ thermal enhancement, 50 MHz 0.1 dB flat bandwidth for NTSC/PAL fidelity, crosstalk of –90 dB at 5 MHz, and compatibility with single-supply (3–15 V) or split-supply (±1.35–±8 V) operation.

Technical Context

The SN10502DGN implements a unity-gain-stable voltage-feedback architecture with fully differential input stage and rail-to-rail output stage. Its design supports wideband noninverting (G = 2 typical) and inverting configurations using feedback resistors from 1 kΩ to 2 kΩ, with internal compensation enabling stable operation into capacitive loads up to 100 pF.

It features matched channel performance: 14 mA max quiescent current per channel, 96 dB min CMRR at 25°C, and –90 dB crosstalk between channels at 5 MHz - critical for dual-path video buffering and active filtering where inter-channel isolation and gain flatness across 4.43 MHz (PAL) or 3.58 MHz (NTSC) subcarriers must be preserved.

Key Specifications

Pinout & Package

SN10502DGN uses an 8-pin MSOP-PP (PowerPAD™) package with exposed thermal pad on underside requiring PCB copper connection for thermal management. Pin 1 is top-left corner (notch-marked), pin 8 is top-right.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed video amplifier applications.

Compared with THS3202DR and LMH6702MA, SN10502DGN uniquely balances broadcast-grade video linearity (0.014% DG), rail-to-rail output swing, and thermally robust MSOP-PP packaging - making it the only option among the three qualified for cost-sensitive, standards-compliant composite video output stages.

Availability

SN10502DGN is available at Aetrix Electronics and suitable for video line driver, imaging signal chain, DVD/CD-ROM video output, and active filtering applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for SN10502DGN 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 and embedded processing technologies, with decades of expertise in high-performance amplifiers and signal-chain solutions.

The SN1050x family was designed specifically for high-fidelity video distribution and low-distortion analog signal conditioning - targeting applications where differential gain/phase accuracy, rail-to-rail output, and thermal reliability in compact packages are critical.

FAQ

What is the maximum operating supply voltage for SN10502DGN?

The SN10502DGN supports dual-supply operation up to ±8 V or single-supply operation up to 16 V. Absolute maximum ratings specify 16.5 V total supply voltage (VS+ to VS−), but recommended operating conditions limit continuous use to ±8 V or 16 V to ensure long-term reliability and maintain specified AC performance such as 100 MHz bandwidth and –82 dBc harmonic distortion. Exceeding these limits risks parametric shift or permanent damage.

Does SN10502DGN require external compensation components?

No, SN10502DGN is internally compensated and unity-gain stable. It does not require external compensation capacitors for standard configurations. However, when driving capacitive loads >100 pF (e.g., long PCB traces or cables), a small series resistor (10–50 Ω) at the output is recommended to maintain phase margin. The datasheet confirms stability with 1 kΩ to 2 kΩ feedback resistors and no additional compensation networks needed for G ≥ 1.

How is the PowerPAD™ thermal pad on SN10502DGN implemented on the PCB?

The PowerPAD™ on SN10502DGN must be soldered to a dedicated, thermally robust copper pour connected to VS− (or ground in single-supply designs). TI recommends a minimum 10 mm² exposed pad area with ≥4 thermal vias (0.3 mm diameter) to an inner ground plane. Failure to connect the PowerPAD™ results in junction temperature exceeding 125°C under load, degrading distortion performance and risking long-term reliability - as confirmed by θJC = 4.7 °C/W and 1.71 W power rating at TA ≤25°C.

Can SN10502DGN drive multiple 75 Ω video loads simultaneously?

Yes, SN10502DGN can drive up to three 75 Ω video loads in parallel while maintaining <0.02% differential gain error, as verified in Figure 16/17 of the datasheet. This is enabled by its linear high-frequency output impedance and ±100 mA output current capability. For four or more loads, gain must be increased to compensate for cable loss, and layout must minimize trace inductance to preserve 50 MHz 0.1 dB flatness - confirmed by test data showing <0.02% DG/DP with three 150 Ω loads (equivalent to two 75 Ω in parallel).

What is the input common-mode voltage range for SN10502DGN on a +5 V single supply?

On a +5 V single supply, the input common-mode voltage range for SN10502DGN is specified as VS− + 1.1 V to VS+ − 1.1 V, i.e., +1.1 V to +3.9 V. This excludes the rails - so inputs cannot be tied directly to ground or +5 V without external biasing. For video applications, a DC-bias network (e.g., resistor divider to +2.5 V) is required at both IN+ pins to center the 1 VPP signal within this range, as shown in Figure 38 and Figure 39 of the SN10502DGN datasheet.