MAX9247ECM/V+ Maxim Integrated Products, MAX9247ECM/V+ Datasheet

IC SERIALIZER LVDS 27BIT 48-LQFP

MAX9247ECM/V+

Manufacturer Part Number
MAX9247ECM/V+
Description
IC SERIALIZER LVDS 27BIT 48-LQFP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX9247ECM/V+

Function
Serializer
Data Rate
840Mbps
Input Type
Serial
Output Type
LVDS
Number Of Inputs
18
Number Of Outputs
1
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX9247 digital video parallel-to-serial converter
serializes 27 bits of parallel data into a serial-data stream.
Eighteen bits of video data and 9 bits of control data are
encoded and multiplexed onto the serial interface, reduc-
ing the serial-data rate. The data-enable input determines
when the video or control data is serialized.
The MAX9247 pairs with the MAX9248/MAX9250 dese-
rializers to form a complete digital video serial link.
Interconnect can be controlled-impedance PCB traces or
twisted-pair cable. Proprietary data encoding reduces
EMI and provides DC balance. DC balance allows AC-
coupling, providing isolation between the transmitting
and receiving ends of the interface. The LVDS output is
internally terminated with 100Ω. For operating frequen-
cies less than 35MHz, the MAX9247 can also pair with
the MAX9218 deserializer.
ESD tolerance is specified for ISO 10605 with ±10kV
Contact Discharge and ±30kV Air-Gap Discharge.
The MAX9247 operates from a +3.3V core supply and
features a separate input supply for interfacing to 1.8V
to 3.3V logic levels. This device is available in a 48-lead
LQFP package and is specified from -40°C to +85°C or
-40°C to +105°C.
19-3955; Rev 3; 4/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Navigation System Displays
In-Vehicle Entertainment Systems
Video Cameras
LCDs
________________________________________________________________ Maxim Integrated Products
General Description
Applications
TOP VIEW
RGB_IN10
RGB_IN11
RGB_IN12
RGB_IN13
RGB_IN14
RGB_IN15
RGB_IN16
RGB_IN17
CNTL_IN0
CNTL_IN1
V
GND
CCIN
10
11
12
1
2
3
4
5
6
7
8
9
DC-Balanced LVDS Serializer
+
27-Bit, 2.5MHz-to-42MHz
MAX9247
LQFP
♦ Preemphasis Improves Eye Diagram and Signal
♦ Proprietary Data Encoding for DC Balance and
♦ Control Data Sent During Video Blanking
♦ Five Control Data Inputs are Single-Bit-Error
♦ Programmable Phase-Shifted LVDS Signaling
♦ Output Common-Mode Filter Reduces EMI
♦ Greater Than 10m STP Cable Drive
♦ Wide ±2% Reference Clock Tolerance
♦ ISO 10605 and IEC 61000-4-2 Level 4
♦ Separate Input Supply Allows Interface to 1.8V
♦ +3.3V Core Supply
♦ Space-Saving LQFP Package
♦ -40°C to +85°C and -40°C to +105°C Operating
+ Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
MAX9247ECM+
MAX9247ECM/V+
MAX9247GCM+
MAX9247GCM/V+
Integrity at the Output
Reduced EMI
Tolerant
Reduces EMI
ESD Protection
to 3.3V Logic
Temperature Ranges
PART
36
35
34
33
32
31
30
29
28
27
26
25
RNG0
RNG1
V
OUT+
OUT-
LVDSGND
LVDSGND
CMF
PWRDWN
V
PLLGND
PRE
CCLVDS
CCPLL
-40°C to +105°C
-40°C to +105°C
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
Ordering Information
Pin Configuration
PIN-PACKAGE
48 LQFP
48 LQFP
48 LQFP
48 LQFP
Features
1

Related parts for MAX9247ECM/V+

MAX9247ECM/V+ Summary of contents

Page 1

... Separate Input Supply Allows Interface to 1.8V to 3.3V Logic ♦ +3.3V Core Supply ♦ Space-Saving LQFP Package ♦ -40°C to +85°C and -40°C to +105°C Operating Temperature Ranges Applications PART MAX9247ECM+ MAX9247ECM/V+ MAX9247GCM+ MAX9247GCM/V+ + Denotes a lead(Pb)-free/RoHS-compliant package. /V denotes an automotive qualified part. TOP VIEW + GND 1 ...

Page 2

DC-Balanced LVDS Serializer ABSOLUTE MAXIMUM RATINGS V to _GND........................................................-0.5V to +4.0V CC_ Any Ground to Any Ground...................................-0.5V to +0.5V OUT+, OUT- to LVDSGND ....................................-0.5V to +4.0V OUT+, OUT- Short Circuit to LVDSGND or V .............................................................Continuous CCLVDS OUT+, OUT- ...

Page 3

DC ELECTRICAL CHARACTERISTICS (continued) = 100Ω ±1%, PWRDWN = high, PRE = low +3.0V to +3.6V, R CC_ L values are +3.3V +25°C.) (Notes 1, 2) CC_ A PARAMETER SYMBOL Differential Output ...

Page 4

DC-Balanced LVDS Serializer AC ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V 100Ω±1%, C CC_ L Typical values are +3.3V, T CC_ A PARAMETER SYMBOL Serializer Delay PLL Lock Time Power-Down Delay Peak-to-Peak ...

Page 5

R = 100Ω +25°C, unless otherwise noted.) CC_ L A WORST-CASE PATTERN SUPPLY CURRENT vs. FREQUENCY WITH PREEMPHASIS 40 30 WITHOUT PREEMPHASIS FREQUENCY (MHz) ...

Page 6

DC-Balanced LVDS Serializer PIN NAME 1, 13, 37 GND Input Buffer Supply and Digital Supply Ground Input Buffer Supply Voltage. Bypass to GND with 0.1µF and 0.001µF capacitors in parallel CCIN close to the device ...

Page 7

RGB_IN CNTL_IN DE_IN PCLK_IN RNG0 RNG1 PWRDWN OUT- V (-) OS OUT+ V (-) OD (OUT+) - (OUT-) Figure 1. LVDS DC Output Load and Parameters _______________________________________________________________________________________ 27-Bit, 2.5MHz-to-42MHz DC-Balanced LVDS Serializer 1 DC BALANCE/ INPUT LATCH PAR-TO-SER ENCODE 0 ...

Page 8

DC-Balanced LVDS Serializer PCLK_IN t F Figure 2. Parallel Clock Requirements (OUT+) - (OUT-) Figure 3. Output Rise and Fall Times PCLK_IN RGB_IN[17:0] CNTL_IN[8:0] DE_IN Figure 4. Synchronous Input Timing 8 _______________________________________________________________________________________ LOW OUT+ OUT- ...

Page 9

RGB_IN CNTL_IN PCLK_IN OUT_ Figure 5. Serializer Delay PWRDWN HIGH IMPEDANCE (OUT+) - (OUT-) PCLK_IN Figure 6. PLL Lock Time PWRDWN (OUT+) - (OUT-) PCLK_IN Figure 7. Power-Down Delay _______________________________________________________________________________________ 27-Bit, 2.5MHz-to-42MHz DC-Balanced LVDS Serializer EXPANDED ...

Page 10

DC-Balanced LVDS Serializer OUT- OUT+ ((OUT+) + (OUT-))/2 Figure 8. Peak-to-Peak Output Offset Voltage Detailed Description The MAX9247 DC-balanced serializer operates at a 2.5MHz-to-42MHz parallel clock frequency, serializing 18 bits of parallel video data RGB_IN[17:0] when the data-enable ...

Page 11

CONTROL TRANSITION PHASE PHASE PCLK_IN CNTL_IN DE_IN RGB_IN = NOT SAMPLED BY PCLK_IN Figure 9. Transition Timing Transition Timing The transition words require interconnect bandwidth and displace control data. Therefore, control data is not sampled (see Figure 9): • Two ...

Page 12

DC-Balanced LVDS Serializer RGB_IN 1 0 CNTL_IN DE_IN PCLK_IN TIMING AND RNG0 PLL CONTROL RNG1 PWRDWN MAX9247 CERAMIC RF SURFACE-MOUNT CAPACITOR *CAPACITORS CAN BE AT EITHER END. Figure 10. AC-Coupled MAX9247 Serializer and MAX9250 Deserializer with Two Capacitors ...

Page 13

RGB_IN 1 0 CNTL_IN DE_IN PCLK_IN TIMING AND RNG0 PLL CONTROL RNG1 PWRDWN MAX9247 CERAMIC RF SURFACE-MOUNT CAPACITOR *CAPACITORS CAN BE AT EITHER END. Figure 12. AC-Coupled MAX9247 Serializer and MAX9248 Deserializer with Two Capacitors per Link RGB_IN 1 0 ...

Page 14

DC-Balanced LVDS Serializer AC-COUPLING CAPACITOR VALUE vs. PARALLEL CLOCK FREQUENCY 140 120 100 FOUR CAPACITORS PER LINK TWO CAPACITORS PER LINK PARALLEL CLOCK FREQUENCY (MHz) Figure 14. ...

Page 15

Wait for at least t of MAX9247 (or 17100 x t LOCK to get activity on the link 3) Power up the MAX9248 Power-Supply Circuits and Bypassing The MAX9247 has isolated on-chip power domains. The digital core supply (V ...

Page 16

DC-Balanced LVDS Serializer Chip Information PROCESS: CMOS 16 ______________________________________________________________________________________ Package Information For the latest package outline information www.maxim-ic.com/packages. PACKAGE TYPE PACKAGE CODE 48 LQFP C48+5 DOCUMENT NO. 21-0054 ...

Page 17

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 © 2009 Maxim Integrated Products 27-Bit, 2 ...

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