MAX9247GCM/V+T Maxim Integrated, MAX9247GCM/V+T Datasheet

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MAX9247GCM/V+T

Manufacturer Part Number
MAX9247GCM/V+T
Description
Serializers & Deserializers - Serdes 27Bit 2.5-42MHz DC Blnc LVDS Serializer
Manufacturer
Maxim Integrated
Type
Serializerr
Datasheet

Specifications of MAX9247GCM/V+T

Rohs
yes
Data Rate
840 Mbit/s
Input Type
LVCMOS
Output Type
LVDS
Number Of Inputs
27
Number Of Outputs
1
Operating Supply Voltage
3 V to 3.6 V
Operating Temperature Range
- 40 C to + 105 C
Package / Case
LQFP-48
Maximum Operating Temperature
+ 105 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
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 4; 4/12
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
TOP VIEW
Applications
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
MAX9247
LQFP
27-Bit, 2.5MHz-to-42MHz
o Preemphasis Improves Eye Diagram and Signal
o Proprietary Data Encoding for DC Balance and
o Control Data Sent During Video Blanking
o Five Control Data Inputs are Single-Bit-Error
o Programmable Phase-Shifted LVDS Signaling
o Output Common-Mode Filter Reduces EMI
o Greater Than 10m STP Cable Drive
o Wide ±2% Reference Clock Tolerance
o ISO 10605 and IEC 61000-4-2 Level 4
o Separate Input Supply Allows Interface to 1.8V
o +3.3V Core Supply
o Space-Saving LQFP Package
o -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 MAX9247GCM/V+T

MAX9247GCM/V+T Summary of contents

Page 1

... Navigation System Displays In-Vehicle Entertainment Systems Video Cameras LCDs TOP VIEW ________________________________________________________________ Maxim Integrated Products 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. 27-Bit, 2.5MHz-to-42MHz DC-Balanced LVDS Serializer o Preemphasis Improves Eye Diagram and Signal ...

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-, CMF 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 +25°C.) (Note 3) CC_ A PARAMETER SYMBOL Serializer Delay PLL Lock ...

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

TRANSITION CONTROL 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 and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status ...

Page 17

... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 17 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2012 Maxim Integrated Products 27-Bit, 2 ...

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