LMH6526

ACTIVE

Four-channel laser diode driver with dual output

Product details

Available channels 4 Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.6 Rating Catalog
Available channels 4 Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.6 Rating Catalog
UQFN (NJD) 28 25 mm² 5 x 5
  • Fast Switching: Rise and Fall Times: 0.6/1.0 ns.
  • Low Voltage Differential Signaling (LVDS) Channels Enable Interface for the Fast Switching Lines
  • Low Output Current Noise: 0.24 nA/√Hz
  • Dual Output: Selectable by SELA/B Pin (Active HIGH)
    • SELA = LMH6526 SEB = LMH6525
  • Four Independent Current Channels
    • Gain of 300, 300 mA Write Channel
    • Gain of 150, 150 mA Low-Noise Read Channel
    • Two Gain of 150, 150 mA Write Channels
    • 600 mA Minimum Combined Output Current
  • Integrated AC Coupled HFM Oscillator
    • Selectable Frequency and Amplitude Setting
    • By External Resistors
    • 200 MHz to 600 MHz Frequency Range
    • Amplitude to 100 mA Peak-to-Peak Modulation
  • Complete Shutdown by ENABLE Pin
  • 5V Single-Supply Operation
  • Logic inputs TTL and CMOS compatible
  • Space Saving Package (OFN)
  • LMH6525 has Differential Enable Oscillator Inputs
  • LMH6526 has Single Ended Enable Oscillator Inputs

All trademarks are the property of their respective owners.

  • Fast Switching: Rise and Fall Times: 0.6/1.0 ns.
  • Low Voltage Differential Signaling (LVDS) Channels Enable Interface for the Fast Switching Lines
  • Low Output Current Noise: 0.24 nA/√Hz
  • Dual Output: Selectable by SELA/B Pin (Active HIGH)
    • SELA = LMH6526 SEB = LMH6525
  • Four Independent Current Channels
    • Gain of 300, 300 mA Write Channel
    • Gain of 150, 150 mA Low-Noise Read Channel
    • Two Gain of 150, 150 mA Write Channels
    • 600 mA Minimum Combined Output Current
  • Integrated AC Coupled HFM Oscillator
    • Selectable Frequency and Amplitude Setting
    • By External Resistors
    • 200 MHz to 600 MHz Frequency Range
    • Amplitude to 100 mA Peak-to-Peak Modulation
  • Complete Shutdown by ENABLE Pin
  • 5V Single-Supply Operation
  • Logic inputs TTL and CMOS compatible
  • Space Saving Package (OFN)
  • LMH6525 has Differential Enable Oscillator Inputs
  • LMH6526 has Single Ended Enable Oscillator Inputs

All trademarks are the property of their respective owners.

The LMH6525/6526 is a laser diode driver for use in combination DVD/CD recordable and rewritable systems. The part contains two high-current outputs for reading and writing the DVD (650 nm) and CD (780 nm) lasers. Functionality includes read, write and erase through four separate switched current channels. The channel currents are summed together at the selected output to generate multilevel waveforms for reading, writing and erasing of optical discs. The LVDS interface delivers DVD write speeds of 16x and higher while minimizing noise and crosstalk. The LMH6525/6526 is optimized for both speed and power consumption to meet the demands of next generation systems. The part features a 150 mA read channel plus one 300 mA and two 150 mA write channels, which can be summed to allow a total output current of 600 mA or greater. The channel currents are set through four independent current inputs.

An on-board High-Frequency Modulator (HFM) oscillator helps reduce low-frequency noise of the laser and is enabled by applying LVDS levels on the ENOSC pins for the LMH6525, while the LMH6526 is enabled by applying an asymmetrical signal on the ENOSC pin. The fully differential oscillator circuit minimizes supply line noise, easing FCC approval of the overall system. The SELA/B pin (active HIGH) selects the output channel and oscillator settings. External resistors determine oscillator frequency and amplitude for each setting. The write and erase channels can be switched on and off through dedicated LVDS interface pins.

The LMH6525/6526 is a laser diode driver for use in combination DVD/CD recordable and rewritable systems. The part contains two high-current outputs for reading and writing the DVD (650 nm) and CD (780 nm) lasers. Functionality includes read, write and erase through four separate switched current channels. The channel currents are summed together at the selected output to generate multilevel waveforms for reading, writing and erasing of optical discs. The LVDS interface delivers DVD write speeds of 16x and higher while minimizing noise and crosstalk. The LMH6525/6526 is optimized for both speed and power consumption to meet the demands of next generation systems. The part features a 150 mA read channel plus one 300 mA and two 150 mA write channels, which can be summed to allow a total output current of 600 mA or greater. The channel currents are set through four independent current inputs.

An on-board High-Frequency Modulator (HFM) oscillator helps reduce low-frequency noise of the laser and is enabled by applying LVDS levels on the ENOSC pins for the LMH6525, while the LMH6526 is enabled by applying an asymmetrical signal on the ENOSC pin. The fully differential oscillator circuit minimizes supply line noise, easing FCC approval of the overall system. The SELA/B pin (active HIGH) selects the output channel and oscillator settings. External resistors determine oscillator frequency and amplitude for each setting. The write and erase channels can be switched on and off through dedicated LVDS interface pins.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
LMH6525 ACTIVE Four-channel laser diode driver with dual output This device has same pinout with differential enable oscillator inputs

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet LMH6525/LMH6526 Four–Channel Laser Diode Driver with Dual Output datasheet (Rev. B) 18 Mar 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
Package Pins Download
UQFN (NJD) 28 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos