LMH1982SQE/NOPB Clock Timing & Frequency Management by Texas Instruments

MULTI-RATE VIDEO CLOCK GENERAT

Semiconductors - ICs>Clock Timing & Frequency Management>Clock Synthesizers & Generators
Status: Unknown
Series: -
RoHS: Unknown
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The LMH1982 device is a multi-rate video clock generator ideal for use in a wide range of 3-Gbps (3G), high-definition (HD), and standard-definition (SD) video applications, such as video synchronization, serial digital interface (SDI) serializer and deserializer (SerDes), video conversion, video editing, and other broadcast and professional video systems. The LMH1982 can generate two simultaneous SD and HD clocks and a Top of Frame (TOF) pulse. In genlock mode, the device's phase locked loops (PLLs) can synchronize the output signals to H sync and V sync input signals applied to either of the reference ports. The input reference can have analog timing from Texas Instrument's LMH1981 multi-format video sync separator or digital timing from an SDI deserializer and should conform to the major SD and HD standards. When a loss of reference occurs, the device can default to free run operation where the output timing accuracy will be determined by the external bias on the free run control voltage input. The LMH1982 can replace discrete PLLs and fieldprogrammable gate array (FPGA) PLLs with multiple voltage controlled crystal oscillators (VCXOs). Only one 27.0000 MHz VCXO and loop filter are externally required for genlock mode. The external loop filter as well as programmable PLL parameters can provide narrow loop bandwidths to minimize jitter transfer. HD clock output jitter as low as 40 ps peak-to-peak can help designers using FPGA SerDes meet stringent SDI output jitter specifications. The LMH1982 is offered in a space-saving 5 mm x 5 mm 32-pin WQFN package and provides low total power consumption of about 250 mW (typical).

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Prices starting from US$15.82

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Specifications

Clock IC Type Clock Generator
Frequency 27MHz
No. of Outputs 2Outputs
Supply Voltage Min 3.135V
Supply Voltage Max 3.465V
Clock IC Case Style WQFN
No. of Pins 32Pins
Operating Temperature Min 0°C
Operating Temperature Max 70°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)

Alternative Descriptions

Multi-rate video clock generator with Genlock | Texas Instruments
Multi-Rate Video Clock Generat | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LMH1982SQE/NOPB?

Additional datasheets, footprints and schematics for LMH1982SQE/NOPB are listed on our Part Details page. You can also find images and similar parts to LMH1982SQE/NOPB on this page.

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What category does LMH1982SQE/NOPB fall under?

The LMH1982SQE/NOPB is listed under Semiconductors - ICs > Clock Timing & Frequency Management > Clock Synthesizers & Generators.

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You can view similar parts to LMH1982SQE/NOPB when available in the Clock Synthesizers & Generators range under the specifications section at the bottom of the details page.

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Is the LMH1982SQE/NOPB RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Texas Instruments, Newark Electronics, element14 and Farnell have stock available or on a lead time for LMH1982SQE/NOPB.

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