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Home > Products > Integrated Circuits (ICs) > Linear > Video Processing

Semtech Corporation GS1524ACKDE3

Name: GS1524ACKDE3
Brand: Semtech Corporation
SKU: GS1524ACKDE3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: GS1524ACKDE3

Manufacturer:: Semtech Corporation

Category:: Video Processing

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: GS1524ACKDE3.pdf

Description:: IC VIDEO CABLE EQUALIZER 16SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

GS1524ACKDE3 from Gennum is a multi-rate SDI adaptive cable equalizer IC designed for serial digital video signal restoration over 75Ω coaxial cable at data rates from 143 Mb/s to 1.485 Gb/s. It supports SMPTE 292M (HD-SDI), SMPTE 344M (ED-SDI), and SMPTE 259M (SD-SDI) standards, delivers 750 mV_p-p differential output swing, and achieves up to 140 m equalized reach on Belden 1694A cable at 1.485 Gb/s in broadcast routing infrastructure.

For engineers reviewing the GS1524ACKDE3 datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world performance metrics, validated pin functions, SDI-specific design value, and confirmed alternative options for HD/SD video signal integrity solutions.

Technical Context

The GS1524ACKDE3 implements an analog adaptive equalization architecture with integrated DC restoration and automatic gain control (AGC) using external 1 µF capacitor feedback. Its equalizer path dynamically compensates for high-frequency cable loss while maintaining signal integrity across SMPTE pathological patterns.

It features dual-mode operation: full adaptive equalization mode and manual bypass mode via BYPASS pin; includes dedicated analog CLI output (0–360 Mb/s) and MCLADJ programmable mute threshold input, both calibrated for SMPTE 259M cable-length estimation and noise-immune muting.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate Range	143 Mb/s to 1.485 Gb/s - supports SD-SDI, ED-SDI, and HD-SDI without reconfiguration.
Equalized Cable Reach	140 m on Belden 1694A at 1.485 Gb/s - enables long-haul HD-SDI distribution in broadcast facilities.
Output Swing	750 mV_p-p differential into 50 Ω - ensures robust PECL-level signal drive for downstream receivers.
Power Supply	+3.3 V single supply - simplifies power rail design and eliminates negative voltage requirements.
Operating Temperature	0°C to +70°C - qualified for commercial broadcast equipment environments.
Max Jitter	0.25 UI at 1.485 Gb/s - maintains eye opening compliance for SMPTE 292M timing budgets.
CLI Voltage Range	1.9 V (no signal) to 2.5 V (0 m cable) - provides analog cable-length feedback for system diagnostics.

Pinout & Package

GS1524ACKDE3 is housed in a 16-pin SOIC package (JEDEC MS-012AA, 7.5 mm × 10.3 mm body, 1.27 mm pitch) with exposed thermal pad not connected internally; pins are arranged in dual-row configuration with VEE (ground) on pins 3, 6, 11, and 14, and VCC (+3.3 V) on pins 2 and 15.

Pin/Terminal	Circuit Role	Design Meaning
1	CLI	Analog output indicating estimated cable length for ≤360 Mb/s signals; used for diagnostics or auto-muting logic.
4,5	SDI / SDI	Differential serial digital input - accepts AC-coupled 75 Ω coaxial signal with internal 1.8 V bias.
7,8	AGC+ / AGC−	Passive AGC filter node - requires external 1 µF capacitor to stabilize equalizer gain loop.
9	BYPASS	Logic input forcing equalizer and DC restore stages into transparent pass-through mode.
10	MCLADJ	Analog input setting maximum cable length threshold for automatic output muting on low-amplitude SD-SDI inputs.
12,13	SDO / SDO	PECL differential output - 50 Ω terminated, 750 mV_p-p, compatible with standard SDI receivers.
16	CD/MUTE	Bidirectional carrier detect/mute control - outputs low when carrier present; accepts logic-high to force mute.

Key Features

Feature	Design Value
SMPTE 292M/344M/259M compliance	Guarantees interoperability with broadcast-grade HD/SD-SDI transmitters and receivers without protocol translation.
Adaptive equalization with DC restoration	Restores signal amplitude and logic threshold simultaneously, eliminating baseline wander from AC-coupled links.
Cable Length Indicator (CLI)	Provides real-time analog voltage proportional to input cable attenuation-enables system-level cable health monitoring.
Programmable MCLADJ mute threshold	Prevents false triggering on noise by muting output only when input falls below user-defined cable-length-equivalent level.
Single 3.3 V supply operation	Reduces board-level power conversion complexity and eliminates need for ±5 V or ±3.3 V rails in SDI line cards.

Applications

Broadcast Video Router	HD-SDI Distribution Amplifier
Use Scenario: Signal regeneration between router input ports and crosspoint switch matrix under varying cable lengths. IC Role / Device Role / Timing Role: Adaptive equalizer restoring edge integrity and DC level of incoming HD-SDI signals before switching. Use Value: Enables reliable 1.485 Gb/s signal routing over 140 m Belden 1694A without manual gain adjustment per port.	Use Scenario: Fan-out of one HD-SDI source to multiple monitors or recording devices with mixed cable runs. IC Role / Device Role / Timing Role: Equalizing and buffering each output leg independently to compensate for different cable losses. Use Value: Maintains <0.25 UI jitter and >750 mV_p-p output swing across all outputs, preserving SMPTE 292M eye compliance.
SDI-to-HDMI Converter Input Stage	Medical Imaging Video Interface
Use Scenario: Conditioning legacy SDI camera feeds prior to digitization and HDMI encoding in studio converters. IC Role / Device Role / Timing Role: Restoring degraded SD-SDI (270 Mb/s) signals from long coaxial runs before ADC sampling. Use Value: Extends usable SD-SDI reach to 350 m on Belden 1694A, enabling flexible camera placement in large venues.	Use Scenario: Integrating HD-SDI endoscopic or ultrasound sources into PACS display systems with fixed-length cabling. IC Role / Device Role / Timing Role: Ensuring deterministic signal recovery and carrier detection to prevent blank screen artifacts during imaging sessions. Use Value: CD/MUTE pin provides reliable carrier presence indication, preventing display freeze from intermittent signal dropouts.

Broadcast Video Router

HD-SDI Distribution Amplifier

Use Scenario: Signal regeneration between router input ports and crosspoint switch matrix under varying cable lengths.

IC Role / Device Role / Timing Role: Adaptive equalizer restoring edge integrity and DC level of incoming HD-SDI signals before switching.

Use Value: Enables reliable 1.485 Gb/s signal routing over 140 m Belden 1694A without manual gain adjustment per port.

Use Scenario: Fan-out of one HD-SDI source to multiple monitors or recording devices with mixed cable runs.

IC Role / Device Role / Timing Role: Equalizing and buffering each output leg independently to compensate for different cable losses.

Use Value: Maintains <0.25 UI jitter and >750 mV_p-p output swing across all outputs, preserving SMPTE 292M eye compliance.

SDI-to-HDMI Converter Input Stage

Medical Imaging Video Interface

Use Scenario: Conditioning legacy SDI camera feeds prior to digitization and HDMI encoding in studio converters.

IC Role / Device Role / Timing Role: Restoring degraded SD-SDI (270 Mb/s) signals from long coaxial runs before ADC sampling.

Use Value: Extends usable SD-SDI reach to 350 m on Belden 1694A, enabling flexible camera placement in large venues.

Use Scenario: Integrating HD-SDI endoscopic or ultrasound sources into PACS display systems with fixed-length cabling.

IC Role / Device Role / Timing Role: Ensuring deterministic signal recovery and carrier detection to prevent blank screen artifacts during imaging sessions.

Use Value: CD/MUTE pin provides reliable carrier presence indication, preventing display freeze from intermittent signal dropouts.

Equivalent & Alternatives

The following parts are listed as comparable options for similar SDI adaptive equalization applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LMH0384SQ/NOPB	Single-supply 3.3 V operation, but uses CML output (not PECL); no CLI or MCLADJ functionality.	Lacks analog cable-length feedback and programmable muting-requires external microcontroller for diagnostics.	Choose LMH0384SQ/NOPB when CML interface compatibility is required and CLI/MCLADJ features are unnecessary.
MAX3587EETG+	Supports same SMPTE standards but uses 2.5 V supply; includes integrated reclocker (not present in GS1524ACKDE3).	Reclocking adds deterministic latency and jitter cleanup but increases power (320 mW vs. 265 mW) and BOM cost.	Choose MAX3587EETG+ when jitter reduction beyond equalization is critical and 2.5 V supply is available.

Compared with LMH0384SQ/NOPB and MAX3587EETG+, the GS1524ACKDE3 uniquely combines PECL output compatibility, analog CLI feedback, and MCLADJ-based muting in a 3.3 V single-supply package-making it optimal for broadcast routing where cable diagnostics and noise-immune muting are essential.

Availability

GS1524ACKDE3 is available at Aetrix Electronics and suitable for broadcast video routers, HD-SDI distribution amplifiers, and medical imaging interfaces requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.

Supply support for GS1524ACKDE3 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 serial interface ICs for professional video, communications, and data acquisition until its acquisition by Semtech in 2013.

The GS1524ACKDE3 belongs to Gennum's SDI equalizer product line, engineered specifically for SMPTE-compliant video signal restoration in broadcast infrastructure where adaptive cable compensation and diagnostic visibility are critical.

FAQ

What is the primary function of the GS1524ACKDE3 in an SDI signal chain?

The GS1524ACKDE3 functions as an adaptive cable equalizer that restores high-frequency content and DC level of degraded serial digital video signals transmitted over coaxial cable. It dynamically compensates for frequency-dependent loss up to 1.485 Gb/s, ensuring compliant eye diagrams at the receiver. The GS1524ACKDE3 achieves this through analog AGC-controlled equalization and integrated DC restoration-critical for maintaining SMPTE 292M/259M signal fidelity in broadcast routing and distribution systems.

Does the GS1524ACKDE3 support both SD-SDI and HD-SDI standards simultaneously?

Yes, the GS1524ACKDE3 natively supports SMPTE 259M (270 Mb/s SD-SDI), SMPTE 344M (540 Mb/s ED-SDI), and SMPTE 292M (1.485 Gb/s HD-SDI) without hardware or firmware reconfiguration. Its adaptive equalizer automatically adjusts response based on input signal characteristics, and its 143–1485 Mb/s operating range covers all three standards. The GS1524ACKDE3 is optimized for peak performance at both 270 Mb/s and 1.485 Gb/s, delivering 350 m and 140 m equalized reach respectively on Belden 1694A cable.

How does the CLI pin on the GS1524ACKDE3 provide diagnostic value?

The CLI (Cable Length Indicator) pin outputs an analog voltage (1.9 V to 2.5 V) proportional to the attenuation of the incoming SDI signal-correlating directly with cable length for data rates up to 360 Mb/s. At 270 Mb/s with 0 m cable and 800 mV input, CLI reads ~2.5 V; voltage decreases as cable length increases. This allows system-level monitoring of cable health or automatic gain staging. The GS1524ACKDE3 CLI is not functional above 360 Mb/s and requires calibration per unit for precise length estimation.

Can the GS1524ACKDE3 operate without external components?

No-the GS1524ACKDE3 requires external passive components for stable operation: a 1 µF capacitor between AGC+ and AGC− pins to stabilize the adaptive gain loop, and AC-coupling capacitors on SDI inputs. It also needs proper 50 Ω termination on SDO outputs and decoupling capacitors on VCC. The GS1524ACKDE3 does not integrate these elements; omission causes instability, excessive jitter, or failure to lock. Reference designs in the datasheet specify exact values and layout rules for optimal performance.

What is the role of the CD/MUTE pin on the GS1524ACKDE3?

CD/MUTE is a bidirectional pin serving two roles: as an output, it drops below 1.2 V when carrier is detected and outputs are active; as an input, applying ≥3.0 V forces output muting, while ≤2.0 V disables muting entirely. This enables both autonomous carrier-sensing behavior and deterministic system-level control. The GS1524ACKDE3 CD/MUTE functionality is disabled in BYPASS mode, and its voltage thresholds are specified in DC Electrical Characteristics (Table 2-1) under VCC = 3.3 V conditions.

GS1524ACKDE3 Specifications

Product attributes: Attribute value

Manufacturer:: Semtech Corporation

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Function:: Equalizer

Applications:: Professional Video

Standards:: DVB-ASI, SMPTE

Control Interface:: Serial

Voltage - Supply:: 3.135V ~ 3.465V

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 16-SO

GS1524ACKDE3 FAQ

1.How can I place an order for GS1524ACKDE3 through Aetrix?

Please submit a Request for Quotation (RFQ) for GS1524ACKDE3 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 GS1524ACKDE3 reliable?

The price and inventory of GS1524ACKDE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GS1524ACKDE3 is usually 5 days.

3.What payment methods are accepted for GS1524ACKDE3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GS1524ACKDE3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for GS1524ACKDE3?

GS1524ACKDE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your GS1524ACKDE3 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 GS1524ACKDE3?

For technical support, including GS1524ACKDE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GS1524ACKDE3 requirements.

6.How does Aetrix verify that GS1524ACKDE3 is sourced from the original manufacturer or authorized distributors?

All GS1524ACKDE3 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 GS1524ACKDE3 meets industry standards.

7.What is the process for return or replacement of GS1524ACKDE3?

All GS1524ACKDE3 units undergo pre-shipment inspection (PSI). If there is an issue with GS1524ACKDE3, 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 GS1524ACKDE3 part is unused and in its original packaging.

Return procedure for GS1524ACKDE3:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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