4bit LVDS Driver BU90LV047A. LVDS Interface ICs

Transcription

1 LVDS Interface ICs 4bit LVDS Driver BU90LV047A Description LVDS Interface IC of ROHM "Serializer" "Deserializer" operate from 8MHz to 150MHz wide clock range, and number of bits range is from 35 to 70. Data is transmitted seven times (7X) stream and reduce cable number by 3(1/3) or less. The ROHM's LVDS has low swing mode to be able to expect further low EMI. Driver and Receiver of 4 bits operate to 250MHz. It can be used for a variety of purposes, home appliances such as LCD-TV, business machines such as decoders, instruments, and medical equipment. Features >500 Mbps (250 MHz) switching rates Flow-through pinout simplifies PCB layout. 300 ps typical differential skew 400 ps maximum differential skew 2.8 ns maximum propagation delay 3.3V power supply design ±200mV and ±350mV Selectable differential signaling Interoperable with existing 5V LVDS receivers High impedance on LVDS outputs on power down Conforms to TIA/EIA-644 LVDS Standard Industrial operating temperature range (-40 to +85 ) Applications Car Navigation System Copier Digital TV (Signal System) FA equipment Medical equipment Vending machine, Ticket vending machine Precaution This chip is not designed to protect from radioactivity. This document may be used as strategic technical data which subjects to COCOM regulations. Jun.2008

2 Block Diagram SL DIN1 D1 DOUT1+ DIN2 D2 DOUT2+ DIN3 D3 DOUT3+ DIN4 D4 DOUT4+ DOUT1- DOUT2- DOUT3- DOUT4- EN Figure 1. Block Diagram 2 / 12

3 SSOP-B16 Package Outline and Specification Product No. 5.0± LV47A 6.4± ±0.2 Lot No. 1PIN MARK 0.3MIN ± ± ± (UNIT:mm) Figure 2. SSOP-B16 Package Outline and Specification 3 / 12

4 Pin Configuration EN 1 DIN1 2 DIN2 3 VCC 4 GND 5 DIN3 6 DIN4 7 SL DOUT1- DOUT1+ DOUT2+ DOUT2- DOUT3- DOUT3+ DOUT4+ DOUT4- Figure 3. Pin Diagram (Top View) 4 / 12

5 Pin Description Table 1 : Pin Description Pin Name Pin No. Type Descriptions DIN 2, 3, 6, 7 LVCMOS In Driver input pin, LVCMOS compatible DOUT+ 10, 11, 14, 15 LVDS Out Non-inverting driver output pin, LVDS levels DOUT- 9, 12, 13, 16 LVDS Out Inverting driver output pin, LVDS levels SL 8 LVCMOS In Swing Level select pin : When SL is high, the driver is reduce swing level (200mV). When SL is low or open, the driver is normal swing level (350mV). EN 1 LVCMOS In Driver enable pin: When EN is low or open, the driver is disabled. When EN is high, the driver is enabled. VCC 4 Power Power supply pin, 3.3V±0.3V GND 5 GND Ground pin Function Description INPUT OUTPUTS EN SL DIN DOUT+ DOUT- H H L or Open H All other combinations of EN, SL inputs L L H H H L L L H H H L X Z Z Swing Level 350mV 200mV 5 / 12

6 Absolute Maximum Ratings Item Symbol Min. Value Max. Supply voltage VCC V Input voltage VIN -0.3 VCC+0.3 V Output voltage VOUT -0.3 VCC+0.3 V Storage temperature range Tstg Unit Package Power Package PD(mW) DERATING(mW/ ) 1 SSOP-B *2 4.5 *2 1 At temperature Ta > 25 2 Package power when mounting on the PCB board. The size of PCB board : (mm 3 ) The material of PCB board :The FR4 glass epoxy board.(3% or less copper foil area) Recommended Operating Conditions Item Symbol Value Min. Typ. Max. Supply voltage VCC V Operating temperature range Topr Unit Condition 6 / 12

7 DC Characteristics Symbol Parameter Conditions Pin Min Typ Max Units V OD1 Differential Output Voltage mv V OH1 Output High Voltage SL= GND, R L = 100Ω (Figure 4) V V OL1 Output Low Voltage V V OD2 Differential Output Voltage mv V OH2 Output High Voltage SL= V CC, R L = 100Ω (Figure 4) V V OL2 Output Low Voltage V V OD Change in Magnitude of V OD for Complementary Output States D OUT- D OUT+ SL = V CC or GND, mv V OS Offset Voltage R L = 100Ω (Figure 4) V V OS Change in Magnitude of Vos for Complementary Output States mv V IH Input High Voltage D IN, V CC V CC V V IL Input Low Voltage SL GND - V CC 0.2 V I I Input Current V IN = or V CC, Other Input = V CC or GND EN μa V CL Input Clamp Voltage I CL = -18mA V I OS I OSD I OFF I CC I CCL I CCZ Output Short Circuit Current Differential Output Short Circuit Current Power-off Leakage No Load Supply Current Drivers Enabled Load Supply Current Drivers Enabled No Load Supply Current Drivers Disabled ENABLED, D IN = V CC, D OUT+ = or D IN = GND, D OUT- = D OUT- D OUT ma ENABLED, V OD = ma V OUT = or 3.6V, V CC = or Open -20 ±1 +20 μa D IN = V CC or GND V CC ma R L = 100Ω All Channels, D IN = V CC or GND (all outputs) D IN = V CC or GND, EN = GND, SL = GND ma ma 7 / 12

8 Switching Characteristics V CC = +3.3V ±0.3V, T opr = -40 to +85 Symbol Parameter Conditions Min Typ Max Units t PHLD Differential Propagation Delay High to Low R L = 100Ω, C L = 15pF ns t PLHD Differential Propagation Delay Low to High (Figure 5 and Figure 6) ns t SKD1 Differential Pulse Skew t PHLD t PLHD ns t SKD2 Channel-to-Channel Skew ns t SKD3 Differential Part to Part Skew ns t SKD4 Differential Part to Part Skew ns t TLH Rise Time ns t THL Fall Time ns t PHZ Disable Time High to Z R L = 100Ω, C L = 15pF ns t PLZ Disable Time Low to Z (Figure 7 and Figure8) ns t PZH Enable Time Z to High ns t PZL Enable Time Z to Low ns f Max Maximum Operating Frequency MHz DOUT+ Vcc GND S1 DIN D RL/2 RL/2 VOS V OD Driver ENABLED DOUT- Figure 4. Driver VOD and VOS Test Circuit 8 / 12

9 CL DOUT+ Generator DIN D RL 50Ω DOUT- Driver ENABLED CL Figure 5. Driver Propagation Delay and Transition Time Test Circuit DIN 1.5V 1.5V 3V tplhd tphld DOUT- DOUT+ (Differential) VOH VOL VDIFF 20% 80% VDIFF = DOUT+ - DOUT- 80% 20% ttlh tthl Figure 6. Driver Propagation Delay and Transition Time Waveforms CL DOUT+ VCC GND DIN D 50O 50O +1.2V Generator EN CL DOUT- 50O 1/ 4 BU90LV 047 A Figure 7. Driver 3-STATE Delay Test Circuit 9 / 12

10 Parameter Measurement Information (Continued) EN WHEN SL = L or Open 1.5V 1.5V 3V tphz tpzh DOUT+ WHEN DIN = Vcc DOUT- WHEN DIN = GND 50% 50% VOH 1.2V DOUT+ WHEN DIN = GND DOUT- WHEN DIN = Vcc tplz 50% tpzl 50% 1.2V VOL Figure 8. Driver 3-STATE Delay Waveform Typical Application ENABLE 1/4 BU90LV048 DATA INPUT RT 100O DATA OUTPU T 1/4 BU90LV047A Figure 9. Point-to-Point Application 10 / 12

11 Typical Application (Continued) DIN 3V DOUT- SINGLE-ENDED DOUT+ VOD VOH VOS (1.25V typical) VOL DOUT+ - DOUT- DIFFERENTIAL OUTPUT (DIFF.) +VOD -VOD +V SS Figure 10. Driver Output Levels 11 / 12

12 Catalog No.08T236A '08.6 ROHM