Datasheet
Package Availability, Models, Samples & Pricing
| Part Number | Package | Factory Lead Time | Models | Samples & Electronic Orders | Budgetary Pricing | Std Pack Size | Package Marking Format |
| Type | Pins | Spec. | MSL Rating | Peak Reflow | RoHS Report | CAD Symbols | Weeks | Qty | Qty | $US each |
| LMH2190TMEVAL | Evaluation Board for the LMH2190 | Full production | N/A
|
| | CALL | N/A | - |
| N/A | N/A |
| LMH2190TM-38 | MICRO SMD | 16 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
| 
| 1K+ | $1.40 | reel of 250 | XYTT I AA |
| 6 weeks | N/A |
| LMH2190TMX-38 | MICRO SMD | 16 | NOPB | 1 | 260 | RoHS |
N/A |
Full production | N/A
|
| 1K+ | $1.40 | reel of 3000 | XYTT I AA |
| 6 weeks | N/A |
General Description
The LMH2190 is a quad channel configurable clock tree driver which supplies a digital system clock to peripherals in mobile
handsets or other applications. It provides a solution to clocking issues such as limited drive capability for fanout or longer
traces, protection of the master clock from varying loads and frequency pulling effects, isolation buffering from noisy modules,
and crosstalk isolation. It has very low phase noise which enables it to drive sensitive modules such as Wireless LAN and
Bluetooth.
The LMH2190 can be clocked up to 27 MHz, and has an independent clock request pin for each clock output which allows the peripheral
to control the clock. It features an integrated LDO which provides an ultra low noise voltage supply with 10 mA external load
current which can be used to supply the TCXO or other clock source.
The I
2C serial interface can be used to override the default configuration of the device to optimize the LMH2190 for the application.
Some of these programmable features include setting the polarity of both the clock and the clock request inputs. In addition,
the clock outputs have programmable output drive current to optimize for the connected load. EMI switching noise can be controlled
by configuring output drive and skew settings.
The LMH2190 quad clock distributor is offered in a tiny 1.615mm x 1.615mm 16 bump microSMD package. Its small size and low
supply current make it ideal for portable applications.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
|
LMH2190TM-38 | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
|
LMH2190TMX-38 | CMOS7 | 0 | 18406 | 0 | 0 | 1089000 | 4 | 309006723
|
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR.
The Long Term Failure Rates were calculated
at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress
temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click here.
Application Notes
| Title | Size in Kbytes |
Date |
 |
| AN-1966: Application Note 1966 Evaluation Board for the LMH2190 |
1816 Kbytes |
4-Aug-09 |
Download |
[Information as of 7-Nov-2009]
|