ML4664 Micro Linear, ML4664 Datasheet
ML4664
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ML4664 Summary of contents
Page 1
... ML4664, but in the ML4669 the link pulses stop. Also, a loss of link at the twisted pair inputs will not stop the optical transmitter from sending idle in the ML4664, but the ML4669 stops sending idle. BLOCK DIAGRAM LINK PULSE ...
Page 2
... TPINN TxCAP0 8 22 TxCAP1 GND TPOUTN 11 19 TPOUTP TOP VIEW ML4664/ML4669 32-Pin TQFP (H32- TPINN TxCAP0 21 4 TxCAP1 5 20 GND 6 19 TPOUTN 7 18 ...
Page 3
... Link Test Fail state and bring LTF high. When the ML4664 is in the link test fail state, the optical and twisted pair transmitters are disabled from sending data. However, the optical transmitter ...
Page 4
... Active low LED driver, open collector. In the low light state, optical and twisted pair transmitters are disabled from sending data. The optical transmitter of the ML4664 does send an idle signal, and link pulses are sent at the twisted pair transmitter. For the ML4669, the twisted pair transmitter ...
Page 5
... N I Input Bias Current THADJ Thermal Resistance ( PLCC ............................................................... 68°C/W TQFP ............................................................... 80ºC/W OPERATING CONDITIONS GND –0 Temperature Range ML4664/ML4669CX .................................. 0°C to 70°C +0.3V ML4664/ML4669IQ ............................... –40°C to 85°C CC +0.3V Supply Voltage (V CC LED on Current ...................................................... 10mA RRSET ........................................................ 61.9k RTSETOP ....................................................... 115 ± 1% RTSETTP ........................................................ 220 ± 1% ...
Page 6
... ML4664/ML4669 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER (SEE FIGURE 1) t Twisted Pair Start-up Delay TPODY t Twisted Pair Steady State Delay TPSDY t Twisted Pair Turn Off Pulse Width TPSPW t Twisted Pair Jitter (SEE FIGURE 2) t Optical Transmit Start-up Delay OPODY t Steady State Delay ...
Page 7
... TPINP TPINN t OPSDY t OPODY I(OPOUT) Figure Timing Diagram OPINP OPINN LMON Figure 3. Optical Link Verification No Light Timing Diagram OPINP OPINN LMON Figure 4. Optical Link Verification Low Light Timing Diagram ML4664/ML4669 t TPSPW t TPSDY DATA t t OPDI IDF t OLL t OLM V TH ...
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... ML4664/ML4669 OPINP OPINN LMON Figure 5. Optical Link Verification Light On Timing Diagram TPINP TPINN VALID DATA OR LINK PULSE LTF TPINP TPINN Figure 6. Twisted Pair Link Verification Timing Diagram TPOUTP TPOUTN TPINP, TPINN OR OPINP, OPINN TPLED OR OPLED 8 t OLO t t LTMIN, LTMAX t LPW ...
Page 9
... LED low light condition. When TPINP is more negative than TPINN, the ML4664/ML4669 will sink current into the chip and the fiber optic LED will light up. Before data will be transmitted onto the fiber optic cable it must exceed the squelch requirements ...
Page 10
... If the ML4664 enters the link test fail state, both link pulses at the twisted pair transmitter, and idle at the optical transmitter will continue to be sent. Data will not be sent at either transmitter ...
Page 11
... The comparator is a high-speed differential zero crossing detector that slices and accurately digitizes the receive signal. The output of the comparator is fed into the receive squelch circuit. ML4664/ML4669 ( zero. Although the OS 11 ...
Page 12
... Data LPS Data Data Data LPS = Link Pulses ON = Low OFF = High Some simplifications made regarding LMON and LTF state machines, see system description. Table 1. ML4669 Functionality. Differences in parentheses are for the ML4664 REF REF R1 V THADJ THRESH GEN R2 Figure 10. ...
Page 13
... LMON LED. When the ML4664 is in the low light state, both the link pulses at the twisted pair transmitter and idle at the optical transmitter continue to be sent. However, when the ML4669 is in the low light state, link pulses are not sent at the twisted pair transmitter ...
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... POL OP LMON TF DIS OPLED POLDIS TPLED J2 2 LTF OPOUTP RTSETOP R13 50 4 TPINP 5 TPINN ML4664 U1 11 TPOUTP 10 TPOUTN 7 TxCAP0 C3 8 TxCAP1 13 RTSETTP GND GND AGND Figure 11. Typical Application Circuit 330 # # Panasonic LNI4161C-(TR) LEDs LMON ...
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... SEATING PLANE Package: H32-7 32-Pin ( 1mm) TQFP 25 0.276 BSC 0.354 BSC (7.00 BSC) (9.00 BSC) 17 0.048 MAX 0.012 - 0.018 (1.20 MAX) (0.29 - 0.45) 0.037 - 0.041 (0.95 - 1.05) ML4664/ML4669 0.042 - 0.056 (1.07 - 1.42) 0.025 - 0.045 (0.63 - 1.14) (RADIUS) 0.300 BSC 0.390 - 0.430 (7.62 BSC) (9.90 - 10.92) 0.099 - 0.110 (2.51 - 2.79) 0º - 8º 0.003 - 0.008 (0.09 - 0.20) 0.018 - 0.030 (0 ...
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... ML4664/ML4669 ORDERING INFORMATION PART NUMBER ML4664CH (Obsolete) ML4664CQ ML4664IQ (Obsolete) ML4669CH ML4669CQ ML4669IQ (Obsolete) © Micro Linear 1998 registered trademark of Micro Linear Corporation. All other trademarks are the property of their respective owners. Products described herein may be covered by one or more of the following U.S. patents: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; ...