ad55-035z-0reel Analog Devices, Inc., ad55-035z-0reel Datasheet

no-image

ad55-035z-0reel

Manufacturer Part Number
ad55-035z-0reel
Description
Cmos, 330 Mhz Triple 8-bit High Speed Video Dac
Manufacturer
Analog Devices, Inc.
Datasheet
a
GENERAL DESCRIPTION
The ADV
on a single monolithic chip. It consists of three high speed, 8-bit
video DACs with complementary outputs, a standard TTL input
interface, and a high impedance, analog output current source.
The ADV7125 has three separate 8-bit-wide input ports. A single
5 V/3.3 V power supply and clock are all that are required to make
the part functional. The ADV7125 has additional video control
signals, composite SYNC and BLANK, as well as a power-
save mode.
The ADV7125 is fabricated in a 5 V CMOS process. Its mono-
lithic CMOS construction ensures greater functionality with
lower power dissipation. The ADV7125 is available in a 48-lead
LQFP package.
ADV is a registered trademark of Analog Devices, Inc.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
FEATURES
330 MSPS Throughput Rate
Triple 8-Bit DACs
RS-343A/RS-170 Compatible Output
Complementary Outputs
DAC Output Current Range 2 to 26 mA
TTL Compatible Inputs
Internal Reference (1.23 V)
Single-Supply 5 V/3.3 V Operation
48-Lead LQFP Package
Low Power Dissipation (30 mW Min @ 3 V)
Low Power Standby Mode (6 mW Typ @ 3 V)
Industrial Temperature Range (–40°C to +85°C)
APPLICATIONS
Digital Video Systems
High Resolution Color Graphics
Digital Radio Modulation
Image Processing
Instrumentation
Video Signal Reconstruction
®
7125 is a triple high speed, digital-to-analog converter
Triple 8-Bit High Speed Video DAC
PRODUCT HIGHLIGHTS
1. 330 MSPS (3.3 V only) throughput
2. Guaranteed monotonic to eight bits
3. Compatible with a wide variety of high resolution color
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
graphics systems, including RS-343A and RS-170
CLOCK
BLANK
G7–G0
PSAVE
R7–R0
B7–B0
SYNC
FUNCTIONAL BLOCK DIAGRAM
8
8
8
POWER-DOWN
REGISTER
REGISTER
REGISTER
V
MODE
GND
AA
DATA
DATA
DATA
R
8
8
8
SET
COMP
CMOS, 330 MHz
DAC
DAC
DAC
© Analog Devices, Inc., 2002
REFERENCE
VOLTAGE
CIRCUIT
SYNC LOGIC
ADV7125
BLANK AND
ADV7125
www.analog.com
IOR
IOR
IOG
IOB
IOG
IOB
V
REF

Related parts for ad55-035z-0reel

ad55-035z-0reel Summary of contents

Page 1

... CMOS construction ensures greater functionality with lower power dissipation. The ADV7125 is available in a 48-lead LQFP package. ADV is a registered trademark of Analog Devices, Inc. REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use ...

Page 2

ADV7125–SPECIFICATIONS 5 V ELECTRICAL CHARACTERISTICS Parameter STATIC PERFORMANCE Resolution (Each DAC) Integral Nonlinearity (BSL) Differential Nonlinearity DIGITAL AND CONTROL INPUTS Input High Voltage Input Low Voltage Input Current PSAVE Pull-Up Current Input Capacitance, C ...

Page 3

V ELECTRICAL CHARACTERISTICS Parameter STATIC PERFORMANCE Resolution (Each DAC) Integral Nonlinearity (BSL) Differential Nonlinearity DIGITAL AND CONTROL INPUTS Input High Voltage Input Low Voltage Input Current PSAVE Pull-Up Current Input Capacitance ...

Page 4

ADV7125 5 V TIMING SPECIFICATIONS Parameter ANALOG OUTPUTS Analog Output Delay Analog Output Rise/Fall Time Analog Output Transition Time Analog Output Skew CLOCK CONTROL 7 f CLK 7 f ...

Page 5

V TIMING SPECIFICATIONS Parameter ANALOG OUTPUTS Analog Output Delay Analog Output Rise/Fall Time Analog Output Transition Time Analog Output Skew CLOCK CONTROL 7 f CLK 7 f CLK ...

Page 6

ADV7125 1 ABSOLUTE MAXIMUM RATINGS V to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 7

Pin Number Mnemonic Function 1, 2, 14, 15, 25, GND Ground. All GND pins must be connected. 26, 39, 40 3–10, G0–G7, Red, Green, and Blue Pixel Data Inputs (TTL Compatible). Pixel data is latched on the rising edge 16–23, ...

Page 8

ADV7125 TERMINOLOGY Blanking Level The level separating the SYNC portion from the video portion of the waveform. Usually referred to as the front porch or back porch IRE units the level that will shut off the ...

Page 9

CIRCUIT DESCRIPTION AND OPERATION The ADV7125 contains three 8-bit DACs, with three input channels, each containing an 8-bit register. Also integrated on board the part is a reference amplifier. CRT control functions BLANK and SYNC are integrated on board the ...

Page 10

ADV7125 Therefore have a graphics system with a 1024 × 1024 resolution, a noninterlaced 60 Hz refresh rate, and a retrace factor of 0.8, then: Dot Rate = × × 1024 1024 ...

Page 11

IOR is terminated with a doubly terminated 75 Ω load (37.5 Ω), IOB and IOG should be terminated with 37.5 Ω resistors (See Figure 5). VIDEO R0 IOR INPUT R7 IOG ADV7125 G0 G7 IOB B0 ...

Page 12

ADV7125 Analog Signal Interconnect The ADV7125 should be located as close as possible to the output connectors, thus minimizing noise pickup and reflections due to impedance mismatch. The video output signals should overlay the ground plane and not the analog ...

Related keywords