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Semtech Corporation GS1528-CKAE3
- Part No.:
- GS1528-CKAE3
- Manufacturer:
- Semtech Corporation
- Category:
- Video Processing
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
GS1528-CKAE3.pdf
- Description:
- IC VIDEO CABLE DRIVER 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,437
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Product details
Overview
GS1528-CKAE3 from Gennum is a dual-output, multi-rate SDI cable driver IC designed for SMPTE 259M/344M/292M-compliant coaxial serial digital video transmission. It delivers 800 mVp-p differential output into 75Ω, supports up to 1.485 Gb/s data rate, features dual slew-rate selection via SD/HD pin, and operates from a single 3.3 V supply with 160 mW typical power consumption in broadcast-grade video routing equipment.
For engineers reviewing the GS1528-CKAE3 datasheet, pinout, applications, or equivalent options, this page provides verified electrical specifications, validated SOIC-8 pin mapping, confirmed SMPTE compliance scope, real-world slew-rate control behavior, and direct alternatives for HD/SD video interface design and cable driver replacement.
Technical Context
The GS1528-CKAE3 implements a bipolar current-mode output stage with on-chip biasing and external RSET-controlled amplitude tuning. Its dual slew-rate architecture uses the SD/HD logic input to switch between SMPTE 259M (400–800 ps rise/fall) and SMPTE 292M (≤220 ps rise/fall) timing profiles - enabling one device to serve both SD and HD video standards without hardware change.
It accepts 50Ω differential PECL-level inputs (300–2200 mVp-p, AC-coupled), drives two independent 75Ω coaxial cables, and guarantees ≥15 dB output return loss from 5 MHz to 1.485 GHz. Internal ESD protection and RoHS-compliant construction support industrial video infrastructure deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 1.485 Gb/s - supports full SMPTE 292M HD-SDI and SMPTE 344M dual-link SDI operation. |
| Output Swing | 800 mVp-p (typ.) into 75Ω - meets SMPTE 259M/292M output amplitude requirements with RSET = 750Ω. |
| Rise/Fall Time | 220 ps (typ., SD/HD = 0) or 400–800 ps (SD/HD = 1) - selectable to match SD or HD timing masks without redesign. |
| Supply Voltage | 3.3 V ±5% - single-rail operation simplifies power delivery in video processing boards. |
| Power Consumption | 160 mW (typ. at 25°C) - enables thermal management in dense video I/O modules. |
| Operating Temp | 0°C to 70°C - qualified for commercial broadcast equipment environments. |
| Input Type | 50Ω differential PECL - compatible with standard LVPECL serializer outputs without level-shifting. |
Pinout & Package
GS1528-CKAE3 is housed in an 8-pin SOIC package (JEDEC MS-012, 150 mil width) with gull-wing leads, RoHS-compliant matte tin finish, and 0.050" pitch. Pin 1 is marked by a notch or dot; device orientation follows standard top-view labeling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 (SDI, SDI) | Differential Input | High-impedance PECL-compatible inputs; accept AC-coupled 300–2200 mVp-p signals; self-biased - no external termination resistors required. |
| 3 (VEE) | Ground Reference | Most negative supply connection; must be tied directly to system ground plane for stable biasing and noise immunity. |
| 4 (RSET) | Amplitude Control | External resistor sets output current; 750Ω yields 800 mVp-p; placement adjacent to pin minimizes parasitic capacitance. |
| 5 (VCC) | Positive Supply | +3.3 V DC input; decoupling capacitor (≥10 nF) required near pin for high-frequency stability. |
| 6 (SD/HD) | Slew-Rate Select | Logic-level control: HIGH → SMPTE 259M/344M timing; LOW → SMPTE 292M timing; TTL/CMOS compatible. |
| 7, 8 (SDO, SDO) | Differential Output | Current-mode outputs drive 75Ω coax; require external 75Ω series termination and AC-coupling capacitor (4.7 µF typical). |
Key Features
| Feature | Design Value |
|---|---|
| Dual slew-rate selection | Single SD/HD pin configures output timing for either SD (SMPTE 259M) or HD (SMPTE 292M) standards - eliminates need for separate drivers per format. |
| Self-biased differential input | Eliminates external bias resistors and simplifies interface to LVPECL serializers - reduces BOM count and layout complexity. |
| Adjustable output amplitude | RSET resistor (573–1100 Ω range) tunes output swing from 608–1040 mVp-p - enables precise matching to downstream receiver sensitivity and cable loss. |
| Guaranteed return loss | ≥15 dB from 5 MHz to 1.485 GHz - ensures signal integrity over full HD-SDI bandwidth without additional matching networks. |
| ESD-hardened design | 500 V HBM input rating and integrated protection diodes - improves robustness during board assembly and field service. |
Applications
| Broadcast Video Routing Switcher | HDTV Camera Interface Module |
|---|---|
|
Use Scenario: Signal distribution across multiple HD-SDI outputs in a 32×32 broadcast router chassis. IC Role / Device Role / Timing Role: Dual-channel cable driver providing SMPTE 292M-compliant outputs with matched rise/fall times and low jitter. Use Value: Enables simultaneous HD-SDI output to monitoring, recording, and transmission paths using one GS1528-CKAE3 per output pair - reducing component count and PCB area vs. discrete solutions. |
Use Scenario: Embedding HD-SDI output capability into a compact camera head electronics module. IC Role / Device Role / Timing Role: Final-stage driver converting serialized video from FPGA-based encoder to 75Ω coaxial cable with controlled slew and amplitude. Use Value: Delivers 800 mVp-p output with <220 ps edge rates and <15 psp-p additive jitter - meeting SMPTE 292M eye diagram mask requirements at 1080p60. |
| Medical Imaging Endoscopy System | Professional Video Production Recorder |
|
Use Scenario: Transmitting uncompressed 1080p video from endoscopic camera to display/processing unit over 15 m coaxial cable. IC Role / Device Role / Timing Role: High-fidelity cable driver compensating for frequency-dependent loss while maintaining SMPTE 292M return loss and amplitude specs. Use Value: Maintains >15 dB return loss up to 1.485 GHz and supports RSET tuning to offset cable attenuation - ensuring diagnostic image fidelity and regulatory compliance. |
Use Scenario: Dual-link SDI input stage in a 4K-capable production recorder accepting SMPTE 372M signals. IC Role / Device Role / Timing Role: Slew-rate configurable driver supporting both legacy SD-SDI (270 Mb/s) and HD-SDI (1.485 Gb/s) inputs via same footprint. Use Value: SD/HD pin allows firmware-selectable timing mode - enabling one hardware revision to support multiple video formats without layout changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SDI cable driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH0384MTX/NOPB | Single-channel, 3.3 V, supports up to 2.97 Gb/s; requires external VREF and has fixed slew rate. | Lacks dual-slew capability and dual-output integration - needs two units for same functionality as GS1528-CKAE3. | Select when higher data rate (3G-SDI) or TI ecosystem compatibility is prioritized over dual-slew flexibility. |
| MAX9516ETE+ | Single-output, 3.3 V, 1.5 Gb/s max; includes integrated 75Ω termination and no RSET control. | Fixed 800 mVp-p output and no SD/HD pin - cannot adapt to SMPTE 259M timing without external circuitry. | Choose for cost-sensitive SD-SDI designs where dual-slew and amplitude tuning are unnecessary. |
Compared with LMH0384MTX/NOPB and MAX9516ETE+, the GS1528-CKAE3 uniquely integrates dual outputs, programmable slew rate, and adjustable amplitude in a single SOIC-8 package - reducing board space and enabling format-agnostic video interface design without performance trade-offs.
Availability
GS1528-CKAE3 is available at Aetrix Electronics and suitable for broadcast video routing switchers, HDTV camera interface modules, medical imaging endoscopy systems, and professional video production recorders requiring stable component supply and long-term obsolescence management.
Supply support for GS1528-CKAE3 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
Gennum Corporation was a Canadian semiconductor company specializing in high-speed analog and mixed-signal ICs for video, communications, and data acquisition - acquired by Semtech in 2013. Its products emphasized signal integrity, SMPTE compliance, and system-level interoperability.
The GS1528-CKAE3 belongs to the HD-LINX II family, engineered specifically for robust, multi-standard SDI cable driving in broadcast, medical, and pro-AV equipment - balancing high-frequency performance with ease of integration and thermal efficiency.
FAQ
What is the maximum data rate supported by the GS1528-CKAE3?
The GS1528-CKAE3 supports a maximum serial data rate of 1.485 Gb/s, fully compliant with SMPTE 292M HD-SDI and SMPTE 344M dual-link SDI standards. This specification is verified under VCC = 3.3 V and operating temperature of 0°C to 70°C, with measured rise/fall times ≤220 ps and additive jitter ≤15 psp-p at that rate.
How does the SD/HD pin affect the GS1528-CKAE3 output timing?
The SD/HD pin on the GS1528-CKAE3 selects between two slew-rate modes: when pulled HIGH, it configures the output for SMPTE 259M/344M (400–800 ps rise/fall); when pulled LOW, it enables SMPTE 292M timing (≤220 ps). This logic-level control is internally decoded and directly modifies the output stage's current switching profile - no external components are needed.
Can the GS1528-CKAE3 drive two independent 75Ω coaxial cables simultaneously?
Yes, the GS1528-CKAE3 integrates two fully independent differential output channels (SDO/SDO), each capable of driving a 75Ω coaxial cable with 800 mVp-p swing and ≥15 dB return loss from 5 MHz to 1.485 GHz. Both outputs share the same slew-rate setting and amplitude control (RSET), but operate electrically isolated - verified in the functional block diagram and typical application circuit.
What is the role of the RSET pin on the GS1528-CKAE3?
The RSET pin on the GS1528-CKAE3 connects to an external resistor that sets the output current magnitude and thus the differential output voltage swing. With RSET = 750Ω, the GS1528-CKAE3 delivers 800 mVp-p into 75Ω; values from 573Ω to 1100Ω adjust swing from 1040 mVp-p down to 608 mVp-p. The resistor must be placed adjacent to the pin with minimal PCB capacitance to maintain high-frequency accuracy.
Is the GS1528-CKAE3 RoHS compliant and lead-free?
Yes, the GS1528-CKAE3 is explicitly certified Pb-free and RoHS compliant per its ordering information table and datasheet revision history. The device uses matte tin plating on gull-wing leads and contains no restricted substances above EU RoHS thresholds - confirmed in the "Pb-Free and RoHS Compliant" column for part number GS1528-CKAE3 on page 12 of the August 2010 datasheet.
GS1528-CKAE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- HD-LINX® II
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
GS1528-CKAE3 FAQ
1.How can I place an order for GS1528-CKAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for GS1528-CKAE3 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 GS1528-CKAE3 reliable?
The price and inventory of GS1528-CKAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GS1528-CKAE3 is usually 5 days.
3.What payment methods are accepted for GS1528-CKAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GS1528-CKAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GS1528-CKAE3?
GS1528-CKAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GS1528-CKAE3 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 GS1528-CKAE3?
For technical support, including GS1528-CKAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GS1528-CKAE3 requirements.
6.How does Aetrix verify that GS1528-CKAE3 is sourced from the original manufacturer or authorized distributors?
All GS1528-CKAE3 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 GS1528-CKAE3 meets industry standards.
7.What is the process for return or replacement of GS1528-CKAE3?
All GS1528-CKAE3 units undergo pre-shipment inspection (PSI). If there is an issue with GS1528-CKAE3, 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 GS1528-CKAE3 part is unused and in its original packaging.
Return procedure for GS1528-CKAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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