SNLS308G April   2009  – June 2015 LMH0384

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 DC Electrical Characteristics
    6. 6.6 AC Electrical Characteristics
    7. 6.7 Timing Requirements
    8. 6.8 Switching Characteristics
    9. 6.9 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Block Description
      2. 7.3.2 Mute Reference (MUTEREF)
      3. 7.3.3 Carrier Detect (CD) and Mute
      4. 7.3.4 Auto Sleep
      5. 7.3.5 Input Interfacing
      6. 7.3.6 Output Interfacing
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 SPI Write
      2. 7.5.2 SPI Read
      3. 7.5.3 Output Driver Adjustments
      4. 7.5.4 Launch Amplitude Optimization
      5. 7.5.5 Cable Length Indicator (CLI)
      6. 7.5.6 Application of CLI: Extending 3G Reach
      7. 7.5.7 Explanation of Extended 3G Reach Mode State Machine ()
    6. 7.6 Register Maps
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Replacing the LMH0344
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Dos and Don'ts
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

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6 Specifications

6.1 Absolute Maximum Ratings(1)

MIN MAX UNIT
Supply voltage 4.0 V
Input voltage (all inputs) −0.3 VCC+0.3 V
Junction temperature 125 °C
Storage temperature −65 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±6500 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±2000
Machine model (MM) ±400
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Manufacturing with less than 500-V HBM is possible with the necessary precautions. Pins listed as ±6500 V may actually have higher performance.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Manufacturing with less than 250-V CDM is possible with the necessary precautions. Pins listed as ±2000 V may actually have higher performance.

6.3 Recommended Operating Conditions

MIN NOM MAX UNIT
VCC – VEE Supply Voltage 3.135 3.3 3.465 V
Input Coupling Capacitance 1 µF
AEC Capacitor (Connected between AEC+ and AEC-) 1 µF
TA Operating Free Air Temperature −40 85 °C

6.4 Thermal Information

THERMAL METRIC(1) LMH0384 UNIT
WQFN (RUM)
16 PINS
RθJA Junction-to-ambient thermal resistance 40 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 6 °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

6.5 DC Electrical Characteristics

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified.(1)(2)(6)(7)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VIH Input Voltage High Level (Logic Inputs) 2 VCC V
VIL Input Voltage Low Level VEE 0.8 V
VSDI Input Voltage Swing (SDI, SDI) 0 m cable length(3) 720 800 950 mVP−P
VCMIN Input Common-Mode Voltage (SDI, SDI) 1.75 V
VSSP-P Differential Output Voltage, P-P (SDO, SDO) 100-Ω load, default values(4),
see Figure 1		 500 700 900 mVP-P
VOD Differential Output Voltage (SDO, SDO) 250 350 450 mV
ΔVOD Change in Magnitude of VOD for Complementary Output States (SDO, SDO) 50 mV
VOS Offset Voltage (SDO, SDO) 1.125 1.25 1.375 V
ΔVOS Change in Magnitude of VOS for Complementary Output States (SDO, SDO) 50 mV
IOS Output Short Circuit Current (SDO, SDO) 30 mA
MUTEREF MUTEREF DC Voltage (floating) 1.3 V
MUTEREF Range 0.8 V
VOH Output Voltage High Level (CD, MISO) IOH = -2 mA 2.4 V
VOL Output Voltage Low Level (CD, MISO) IOL = +2 mA 0.4 V
ICC Supply Current Normal operation, equalizing cable < 140m (Belden 1694A)(5) 70 85 mA
Normal operation, equalizing cable > 140 m (Belden 1694A) 90 110 mA
Power save mode 10 14 mA
(1) Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated referenced to VEE = 0 Volts.
(2) Typical values are stated for VCC = +3.3 V and TA = +25°C.
(3) The LMH0384 can be optimized for different launch amplitudes through the SPI.
(4) The differential output voltage and offset voltage are adjustable through the SPI.
(5) The equalizer automatically shifts equalization stages at cable lengths less than 140 m (Belden 1694A) to reduce power consumption. This power savings is also achieved by setting Extended 3G Reach Mode = 1 through the SPI.
(6) Typical pullup or pulldown for digital pin is 100 kΩ.
(7) Due to SMPTE naming convention, all SMPTE Engineering Documents will be numbered as a two-letter prefix and a number. Documents and references with the same root number and year are functionally identical; for example ST 424-2006 and SMPTE 424M-2006l refer to the same document.

6.6 AC Electrical Characteristics

Over Supply Voltage and Operating Temperature ranges, unless otherwise specified (1).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
BRMIN Minimum Input Data Rate (SDI, SDI) 125 Mbps
BRMAX Maximum Input Data Rate (SDI, SDI) 2970 Mbps
TJRAW Jitter for Various Cable Lengths 270 Mbps, Belden 1694A,
0 to 350 meters(3)		 0.2 UI
270 Mbps, Belden 1694A,
350 to 400 meters		 0.2
1.485 Gbps, Belden 1694A,
0 to 170 meters(3)		 0.25
1.485 Gbps, Belden 1694A,
170 to 200 meters		 0.3
2.97 Gbps, Belden 1694A,
0-110 meters(3)		 0.3
2.97 Gbps, Belden 1694A,
110 to 140 meters		 0.35
tr,tf Output Rise Time, Fall Time (SDO, SDO) 20% to 80%, 100-Ω load(2),
see Figure 1		 80 130 ps
Mismatch in Rise/Fall Time (SDO, SDO) See  (2) 2 15 ps
tOS Output Overshoot (SDO, SDO) See  (2) 1% 5%
RLIN Input Return Loss (SDI, SDI) 5 MHz to 1.5 GHz(4) 15 dB
1.5 GHz to 3.0 GHz(4) 10 dB
RIN Input Resistance (SDI, SDI) single-ended 1.3 kΩ
CIN Input Capacitance (SDI, SDI) single-ended 0.7 pF
(1) Typical values are stated for VCC = +3.3 V and TA = +25°C.
(2) Specification is ensured by characterization.
(3) Based on design and characterization data over the full range of recommended operating conditions of the device. Jitter is measured in accordance with ST RP 184, ST RP 192, and the applicable serial data transmission standard: ST 424, ST 292, or ST 259.
(4) Input return loss is dependent onboard design. The LMH0384 exceeds this specification on the SD384 evaluation board with a return loss network consisting of a 5.6 nH inductor in parallel with the 75-Ω series resistor on the input.

6.7 Timing Requirements

over operating free-air temperature range (unless otherwise noted)
MIN TYP MAX UNIT
fSCK SCK Frequency 20 MHz
tPH SCK Pulse Width High See Figure 2 and Figure 3 40 % SCK period
tPL SCK Pulse Width Low 40 % SCK period
tSU MOSI Setup Time See Figure 2 and Figure 3 4 ns
tH MOSI Hold Time 4 ns
tSSSU SS Setup Time See Figure 2 and Figure 3 4 ns
tSSH SS Hold Time 4 ns
tSSOF SS Off Time 10 ns

6.8 Switching Characteristics

over operating free-air temperature range (unless otherwise noted)
MIN TYP MAX UNIT
tODZ MISO Driven-to-Tristate Time See  Figure 3 15 ns
tOZD MISO Tristate-to-Driven Time 15 ns
tOD MISO Output Delay Time 15 ns
LMH0384 30083008.gifFigure 1. LVDS Output Voltage, Offset, and Timing Parameters
LMH0384 30083009.gifFigure 2. SPI Write
LMH0384 30083010.gifFigure 3. SPI Read

6.9 Typical Characteristics

Typical device characteristics at TA = +25°C and VDD = 3.3 V, unless otherwise noted.
LMH0384 0m-B1694A-PRBS10-2.97-gbps.gifFigure 4. 20-M B1694A PRBS10 2.97 Gbps
LMH0384 0m-B1694A-PRBS10-2.97-gbps-2.gifFigure 5. 100-M B1694A PRBS10 2.97 Gbps
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