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CS4955

Features: ·Six DACs providing simultaneous composite,S-video, and RGB or Component YUVoutputs· Programmable DAC output currents for lowimped-ance (37.5 W) and high impedance(150 W) loads.·Multi-standard support for NTSC-M, NTSCJAPAN,PAL (B, D, G, H, I, M, N,Combination N)·ITU R.BT656 input mode su...

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SeekIC No. : 004316479 Detail

CS4955: Features: ·Six DACs providing simultaneous composite,S-video, and RGB or Component YUVoutputs· Programmable DAC output currents for lowimped-ance (37.5 W) and high impedance(150 W) loads.·Multi-stan...

CS4955 Data Sheet

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Part Number:
CS4955
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/3/13

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Product Details

Description



Features:

·Six DACs providing simultaneous composite,
S-video, and RGB or Component YUV
outputs
· Programmable DAC output currents for low
imped-ance (37.5 W) and high impedance
(150 W) loads.
·Multi-standard support for NTSC-M, NTSCJAPAN,
PAL (B, D, G, H, I, M, N,
Combination N)
·ITU R.BT656 input mode supporting
EAV/SAV codes and CCIR601 Master/Slave
input modes
·Programmable HSYNC and VSYNC timing
·Multistandard Teletext (Europe, NABTS,
WST) support
·VBI encoding support
·Wide-Screen Signaling (WSS) support, EIA-
CPX1204
·NTSC closed caption encoder with interrupt
· CS4955 supports Macrovision copy
protection Version 7
·Host interface configurable
for parallel or I2C
compatible operation
·On-chip voltage reference
generator
·+3.3 V or +5 V operation,
CMOS, low-power modes,
tri-state DACs


Specifications

Parameter Symbol Min Max Unit
Power Supply
Input Current Per Pin (Except Supply Pins)
Output Current Per Pin (Except Supply Pins)
Analog Input Voltage
Digital Input Voltage
Ambient Temperature Power Applied
Storage Temperature
VAA/VDD
-0.3
-10
-50
-0.3
-0.3
-55
-65
6.0
10
+50
VAA + 0.3
VDD + 0.3
+ 125
+ 150
V
mA
mA
V
V
°C
°C



Description

The CS4954/5 provides full conversion from digital video formats YCbCr or YUV into NTSC and PAL Composite, Y/C (S-video) and RGB, or YUV analog video. Input formats can be 27 MHz 8-bit YUV, 8-bit YCbCr, or ITU R.BT656 with support for EAV/SAV codes. Video output can be formatted to be compatible with NTSC-M, NTSCJ, PAL-B,D,G,H,I,M,N, and Combination N systems. Closed Caption is supported in NTSC. Teletext is supported for NTSC and PAL.

Six 10-bit DACs CS4955 provide two channels for an S-Video output port, one or two composite video outputs, and three RGB or YUV outputs. Two-times oversampling reduces the output filter requirements and guarantees no DAC-related modulation components within the specified bandwidth of any of the supported video standards.

Parallel or high-speed I2C compatible control interfaces are provided for flexibility in system design. The parallel interface doubles as a general purpose I/O port when the CS4954/5 is in I2C mode to help conserve valuable board area.




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