Semtech Corporation GS1528ACTAE3
- Part No.:
- GS1528ACTAE3
- Manufacturer:
- Semtech Corporation
- Category:
- Video Processing
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
GS1528ACTAE3.pdf
- Description:
- IC VIDEO CABLE DRIVER 8SOIC
- Quantity:
- Payment:

- Shipping:

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Product details
Overview
GS1528ACTAE3 from Semtech is a dual-channel, multi-rate HD/SD-SDI coaxial cable driver IC with selectable slew rate for SMPTE 292M (1.485 Gb/s), SMPTE 344M, and SMPTE 259M compliance. It features 50Ω differential PECL input, dual 75Ω output drivers, RSET-controlled output swing (800 mVp-p typ.), and operates from a single 3.3 V supply. It is used in broadcast video routing, camera back-end interfaces, and HD-SDI distribution amplifiers.
For engineers reviewing the GS1528ACTAE3 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, SMPTE-compliant timing behavior, SOIC-8 package layout guidance, and real-world SDI signal integrity considerations including return loss interpolation and slew-rate control logic.
Technical Context
The GS1528ACTAE3 implements a BiCMOS current-mode output stage with on-chip biasing and external RSET resistor control of output amplitude. Its SD/HD pin enables dynamic selection between SMPTE 259M/344M (400–800 ps rise/fall) and SMPTE 292M (≤220 ps) timing profiles - a hardware-controlled function not present in the pin-compatible GS9068A.
It accepts AC-coupled LVPECL differential inputs (300–2000 mVp-p) without external biasing, drives 75Ω coaxial loads with ≥15 dB return loss (5 MHz–1.485 GHz), and delivers <22 psp-p additive jitter at 1.485 Gb/s. Power consumption is 168 mW typical at 3.3 V and 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 1.485 Gb/s - supports full SMPTE 292M HD-SDI operation without retiming or reclocking. |
| Rise/Fall Time | ≤220 ps (SD/HD = LOW) or 400–800 ps (SD/HD = HIGH) - hardware-selectable to meet exact SMPTE standard requirements. |
| Output Swing | 800 mVp-p (typ., RSET = 750 Ω) into 75 Ω - adjustable ±7% via precision RSET resistor for impedance matching and eye diagram optimization. |
| Additive Jitter | 22 psp-p at 1.485 Gb/s - ensures sufficient timing margin for serial digital video transmission over long coax runs. |
| Supply Voltage | 3.3 V ±5% - single-rail operation simplifies power design and eliminates level-shifting for 3.3 V FPGA/ASIC interfaces. |
| Operating Temp | 0°C to 70°C - validated for commercial broadcast equipment environments, excluding extended industrial or automotive use. |
| Input Type | 50 Ω differential PECL - compatible with standard SDI serializer outputs and requires no external termination or bias network. |
Pinout & Package
GS1528ACTAE3 is housed in an 8-pin SOIC package (JEDEC MS-012AA, 150 mil width) with RoHS-compliant Pb-free finish and moisture sensitivity level 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - SDI, SDI | Differential analog input | Accepts AC-coupled LVPECL serial data; self-biased, no external resistors required; 300–2000 mVp-p swing range. |
| 3 - VEE | Power ground | Most negative supply node; must be connected directly to system ground plane with low-inductance path. |
| 4 - RSET | Analog control input | External resistor sets output current and voltage swing; placement adjacent to pin minimizes parasitic capacitance. |
| 5 - VCC | Positive supply | 3.3 V main supply; decoupling capacitor (≥100 nF) required within 5 mm of pin for high-frequency stability. |
| 6 - SD/HD | Digital control input | Active-HIGH selects SMPTE 259M/344M timing; LOW selects SMPTE 292M; not connected on GS9068A. |
| 7, 8 - SDO, SDO | Differential analog output | Current-mode 75 Ω drivers; require external AC-coupling (4.7 µF tantalum) and PCB layout per Figure 6-1 for return loss compliance. |
Key Features
| Feature | Design Value |
|---|---|
| SMPTE multi-standard compliance | Hardware-selectable timing meets SMPTE 259M, 344M, and 292M simultaneously - eliminates need for separate SD/HD driver variants. |
| Dual independent coax drivers | Two fully buffered, matched-output channels enable redundant or split-path HD-SDI distribution without external splitters. |
| Adjustable output amplitude | RSET resistor allows precise 608–1040 mVp-p swing tuning to compensate for PCB trace loss or connector mismatch. |
| No external input biasing | On-chip biasing eliminates 50 Ω Thevenin termination networks, reducing BOM count and board space vs. legacy SDI drivers. |
| Return loss optimization support | Interpolated measurement method (RH/RL) enables accurate validation of ≥15 dB return loss across full operating voltage swing. |
Applications
| Broadcast Camera Interface | HD-SDI Distribution Amplifier |
|---|---|
|
Use Scenario: Transmitting uncompressed 1080p60 video from a professional broadcast camera head to a remote production unit over 100 m coaxial cable. IC Role / Device Role / Timing Role: Final-stage cable driver providing SMPTE 292M-compliant output with ≤220 ps rise/fall time and <22 psp-p jitter to preserve eye opening. Use Value: Enables direct connection to SMPTE-compliant receivers without equalization or retiming, reducing latency and component count. |
Use Scenario: Splitting one HD-SDI source to feed four downstream monitors or recorders in a studio control room. IC Role / Device Role / Timing Role: Dual-output driver replicating and re-driving the same serial stream with matched channel skew (<30 ps) and amplitude uniformity. Use Value: Eliminates passive splitters that degrade return loss and introduces insertion loss; maintains full SMPTE 292M compliance on all outputs. |
| Video Router Output Stage | Medical Imaging Video Link |
|
Use Scenario: Driving multiple destinations from a 32×32 broadcast video router's output cards using point-to-point coax links. IC Role / Device Role / Timing Role: High-reliability cable driver with RSET-adjustable swing to compensate for varying cable lengths and connector quality across ports. Use Value: Ensures consistent signal integrity across all 32 outputs without custom per-port tuning, simplifying calibration and maintenance. |
Use Scenario: Transmitting real-time 4K endoscopic video from surgical equipment to display and recording systems in OR environments. IC Role / Device Role / Timing Role: Low-jitter, high-swing driver supporting SMPTE 292M/344M standards for diagnostic-grade image fidelity over medical-grade coax. Use Value: Meets strict EMI and signal integrity requirements for Class II medical devices while maintaining zero-frame-latency transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI cable driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GS9068ACTAE3 | Same SOIC-8 package and pinout, but lacks SD/HD pin and max data rate limited to 540 Mb/s (SMPTE 259M/344M only). | Not suitable for SMPTE 292M HD-SDI; usable only in SD-SDI or lower-rate multi-rate systems. | Select GS9068ACTAE3 only if HD-SDI capability is unnecessary and cost reduction is prioritized. |
| LMH0384MT/NOPB | Single-channel, 3G-SDI capable (2.97 Gb/s), integrated reclocker, requires external reference clock; different pinout and power sequencing. | Supports higher bandwidth and jitter cleanup, but adds complexity and cost; not drop-in compatible. | Choose LMH0384MT/NOPB when 3G-SDI or jitter attenuation is required, not for direct GS1528ACTAE3 replacement. |
Compared with GS9068ACTAE3, GS1528ACTAE3 adds SMPTE 292M support via hardware slew-rate control; compared with LMH0384MT/NOPB, it offers simpler single-supply operation and lower power but no reclocking - making it optimal for fixed-rate, low-latency HD-SDI driver stages.
Availability
GS1528ACTAE3 is available at Aetrix Electronics and suitable for broadcast video infrastructure, medical imaging video links, and HD-SDI distribution amplifier designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for GS1528ACTAE3 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
Semtech Corporation is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for communications, industrial, and consumer markets.
The GS1528ACTAE3 belongs to Semtech's HD-LINX® II family, engineered specifically for robust, multi-standard serial digital video interface applications in broadcast, medical, and professional AV equipment.
FAQ
What is the maximum data rate supported by the GS1528ACTAE3?
The GS1528ACTAE3 supports up to 1.485 Gb/s, enabling full compliance with SMPTE 292M HD-SDI standards. This maximum rate is achieved when the SD/HD pin is set LOW to select the fast slew-rate mode. At this rate, the device delivers ≤220 ps rise/fall time and 22 psp-p additive jitter - critical for maintaining eye diagram integrity over 100 m coaxial cable runs. The GS1528ACTAE3 does not support 3G-SDI (2.97 Gb/s) or higher rates.
How does the SD/HD pin affect GS1528ACTAE3 operation?
The SD/HD pin on the GS1528ACTAE3 is a dedicated hardware control input that selects output slew rate: when driven HIGH, it configures the GS1528ACTAE3 for SMPTE 259M/344M compliance (400–800 ps rise/fall); when driven LOW, it enables SMPTE 292M operation (≤220 ps). This pin is unconnected (NC) on the pin-compatible GS9068A. Pull-up or pull-down resistors must be used to ensure defined logic states during power-up and idle conditions to avoid undefined timing behavior in the GS1528ACTAE3.
Can the GS1528ACTAE3 drive two independent coaxial cables simultaneously?
Yes, the GS1528ACTAE3 integrates two fully independent, matched-current-output drivers (SDO/SDO pins) capable of driving separate 75 Ω coaxial cables concurrently. Each channel supports identical SMPTE-compliant timing and amplitude characteristics. Channel-to-channel skew is specified at <30 ps, and amplitude matching is maintained via shared RSET control - making the GS1528ACTAE3 ideal for dual-output applications like redundant video paths or split distribution without external splitters or buffers.
What is the role of the RSET resistor in GS1528ACTAE3 circuit design?
The RSET resistor on pin 4 of the GS1528ACTAE3 sets the output current and thus the differential output voltage swing into a 75 Ω load. With RSET = 750 Ω, the GS1528ACTAE3 delivers 800 mVp-p (±7% typ.). Values from 573 Ω to 995 Ω adjust swing from 1040 mVp-p down to 608 mVp-p. To maintain signal integrity, the resistor must be a ±1% SMT type placed adjacent to the RSET pin, with the PCB ground plane removed beneath both the pin and resistor to minimize parasitic capacitance - a requirement explicitly called out in the GS1528ACTAE3 datasheet.
Is the GS1528ACTAE3 compatible with AC-coupled LVPECL inputs?
Yes, the GS1528ACTAE3 accepts AC-coupled LVPECL differential inputs (pins 1 and 2) without requiring external biasing resistors. Its internal biasing circuitry establishes the correct common-mode voltage (1.6 V + ΔVSDI/2 to VCC − ΔVSDI/2) automatically. For pathological test signals at 270 Mb/s or 1.485 Gb/s, a minimum 4.7 µF tantalum coupling capacitor is recommended to prevent DC wander and maintain baseline stability - a design detail confirmed in the GS1528ACTAE3 application circuits and input interfacing section.
GS1528ACTAE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Driver
- Applications:
- Professional Video
- Standards:
- SMPTE
- Control Interface:
- Serial
- Voltage - Supply:
- 3.135V ~ 3.465V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
GS1528ACTAE3 FAQ
1.How can I place an order for GS1528ACTAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for GS1528ACTAE3 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 GS1528ACTAE3 reliable?
The price and inventory of GS1528ACTAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GS1528ACTAE3 is usually 5 days.
3.What payment methods are accepted for GS1528ACTAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GS1528ACTAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GS1528ACTAE3?
GS1528ACTAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GS1528ACTAE3 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 GS1528ACTAE3?
For technical support, including GS1528ACTAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GS1528ACTAE3 requirements.
6.How does Aetrix verify that GS1528ACTAE3 is sourced from the original manufacturer or authorized distributors?
All GS1528ACTAE3 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 GS1528ACTAE3 meets industry standards.
7.What is the process for return or replacement of GS1528ACTAE3?
All GS1528ACTAE3 units undergo pre-shipment inspection (PSI). If there is an issue with GS1528ACTAE3, 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 GS1528ACTAE3 part is unused and in its original packaging.
Return procedure for GS1528ACTAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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