LMH0394SQX/NOPB National Semiconductor, LMH0394SQX/NOPB Datasheet
LMH0394SQX/NOPB
Specifications of LMH0394SQX/NOPB
Related parts for LMH0394SQX/NOPB
LMH0394SQX/NOPB Summary of contents
Page 1
... Typical Application (Pin Mode) © 2011 National Semiconductor Corporation LMH0394 Features ■ SMPTE 424M, SMPTE 292M, SMPTE 344M, SMPTE 259M, and DVB-ASI compliant ■ ...
Page 2
Connection Diagrams Pin Mode (non-SPI) / SPI_EN = GND / LMH0344 Compatible The exposed die attach pad is a negative electrical terminal for this device. It should be connected to the negative power supply voltage. Ordering Information Part Number LMH0394SQ ...
Page 3
Pin Descriptions – Pin Mode (non-SPI) / SPI_EN = GND / LMH0344 Compatible Pin Name I/O, Type 1 V Ground EE 2 SDI I, SDI 3 SDI I, SDI 4 SPI_EN I, LVCMOS 5 AEC+ I/O, Analog 6 AEC- I/O, ...
Page 4
Pin Descriptions – SPI Mode / SPI_EN = V Pin Name I/O, Type 1 V Ground EE 2 SDI I, SDI 3 SDI I, SDI 4 SPI_EN I, LVCMOS 5 AEC+ I/O, Analog 6 AEC- I/O, Analog ...
Page 5
Absolute Maximum Ratings Supply Voltage Input Voltage (all inputs) Storage Temperature Range Junction Temperature Package Thermal Resistance θ 16-pin LLP JA θ 16-pin LLP JC ESD Rating (HBM) ESD Rating (MM) ESD Rating (CDM) DC Electrical Characteristics Over Supply Voltage ...
Page 6
AC Electrical Characteristics Over Supply Voltage and Operating Temperature ranges, unless otherwise specified Symbol Parameter BR Minimum Input Data Rate MIN BR Maximum Input Data Rate MAX Jitter for Various Cable Lengths Output Rise Time, Fall Time ...
Page 7
Note 3: Typical values are stated for V = +2.5V and T CC Note 4: Specification is guaranteed by characterization. Note 5: The LMH0394 can be optimized for different launch amplitudes via the SPI. Note 6: The differential output voltage ...
Page 8
Block Diagram (Pin Mode) Device Operation BLOCK DESCRIPTION The Equalizer Filter block is a multi-stage adaptive filter. If Bypass is high, the equalizer filter is disabled. The DC Restoration / Level Control block receives the dif- ferential signals from the ...
Page 9
CARRIER DETECT (CD) AND MUTE Carrier detect CD indicates if a valid signal is present at the LMH0394 input. This signal is logical OR operation of the in- ternal energy detector and MUTE setting (if used). The REF internal energy ...
Page 10
SPI Register Access Setting SPI_EN high enables the optional SPI register access mode. In SPI mode, the LMH0394 provides register access to all of its features along with a cable length indicator, pro- grammable output de-emphasis, programmable output com- mon ...
Page 11
LMH0394's MOSI input. Once again, the prior SPI com- mand, address, and data are shifted out on the MISO output, but this data now includes the requested read data. The read data is available on the MISO output ...
Page 12
SPI Daisy-Chain Read Figure 9 shows the SPI daisy-chain read for a daisy-chain of N devices. The SPI daisy-chain read is 32xN bits long, con- sisting of 16xN bits for the read transaction followed by 16xN bits for the dummy ...
Page 13
In the second transaction, three dummy reads (each consist- ing of 16 “1”s) are shifted in, and the read data from Device 2 (with value 0x88) appears on MISO in the 25th through 32nd clock cycles. SPI Daisy-Chain Length Detection ...
Page 14
Application Information APPLICATION CIRCUIT (SPI MODE) Figure 13 shows the application circuit for the LMH0394 in SPI mode. (Note: The application circuit shows an external INTERFACING TO 3.3V SPI The LMH0394 may be controlled via optional SPI register ac- cess. ...
Page 15
PCB LAYOUT RECOMMENDATIONS For information on layout and soldering of the LLP package, pease refer to the following application note: AN-1187, “Leadless Leadframe Package (LLP).” The SMPTE 424M, 292M, and 259M standards have strin- gent requirements for the input return ...
Page 16
SPI Registers Address R/W Name Bits Field 00h R/W General Control 4:3 Sleep Mode 01h R/W Output Driver 7:6 Output Swing 5:4 Offset Voltage 3 2:1 De-Emphasis 0 02h R/W Launch 7 Amplitude Control ...
Page 17
Address R/W Name Bits Field 03h R/W MUTE 7:6 Reserved REF 5 4:0 Digital MUTE 04h R Device ID 7:6 Reserved 5 3:0 Die Revision 05h R Rate Indicator 7:6 Reserved 5 4:0 Reserved 06h R Cable Length ...
Page 18
Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 16-Pin LLP Order Number LMH0394SQ NS Package Number SQB16A 18 ...
Page 19
Notes 19 www.national.com ...
Page 20
... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...