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ADV7178 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADV7178
Beschreibung Integrated Digital CCIR-601 to PAL/NTSC Video Encoder
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 30 Seiten
ADV7178 Datasheet, Funktion
Integrated Digital CCIR-601
to PAL/NTSC Video Encoder
ADV7177/ADV7178
FEATURES
ITU-R BT601/656 YCrCb to PAL/NTSC video encoder
High quality, 9-bit video DACs
Integral nonlinearity <1 LSB at 9 bits
NTSC-M, PAL-M/N, PAL-B/D/G/H/I
Single 27 MHz crystal/clock required (±2 oversampling)
75 dB video SNR
32-bit direct digital synthesizer for color subcarrier
Multistandard video output support:
Composite (CVBS)
Component S-video (Y/C)
Component YUV or RGB
Video input data port supports:
CCIR-656 4:2:2 8-bit parallel input format
4:2:2 16-bit parallel input format
Full video output drive or low signal drive capability
34.7 mA max into 37.5 Ω (doubly terminated 75 R)
5 mA min with external buffers
Programmable simultaneous composite and S-VHS
(VHS) Y/C or RGB (SCART)/YUV video outputs
Programmable luma filters (low-pass/notch/extended)
Programmable VBI (vertical blanking interval)
Programmable subcarrier frequency and phase
Programmable luma delay
Individual on/off control of each DAC
CCIR and square pixel operation
Color-signal control/burst-signal control
Interlaced/noninterlaced operation
Complete on-chip video timing generator
OSD support (ADV7177 only)
Programmable multimode master/slave operation
Macrovision AntiTaping Rev. 7.01 (ADV7178 only)1
Closed captioning support
On-board voltage reference
2-wire serial MPU interface (I2C®-compatible)
Single-supply 5 V or 3 V operation
Small 44-lead MQFP package
Synchronous 27 MHz/13.5 MHz clock output
APPLICATIONS
MPEG-1 and MPEG-2 video, DVD, digital satellite,
cable systems (set-top boxes/IRDs), digital TVs,
CD video/karaoke, video games, PC video/multimedia
1 The Macrovision anticopy process is licensed for noncommercial home use
only, which is its sole intended use in the device. Please contact sales office
for latest Macrovision version available. ITU-R and CCIR are used inter-
changeably in this document (ITU-R has replaced CCIR recommendations).
FUNCTIONAL BLOCK DIAGRAM
VAA
ADV7177
ONLY
OSD_EN
OSD_0
OSD_1
OSD_2
COLOR
DATA
P7–P0
P15–P8
HSYNC
FIELD/VSYNC
BLANK
ADV7177/ADV7178
8
4:2:2 TO
4:4:4 8
INTER-
POLATOR
8
8
YCrCb
TO 8
YUV
MATRIX
8
ADD 8
SYNC
ADD 8
BURST
ADD 8
BURST
INTER- 8
POLATOR
INTER- 8
POLATOR
INTER- 8
POLATOR
VIDEO TIMING
GENERATOR
I2C MPU PORT
YUV TO
RBG
MATRIX
Y
LOW-PASS
FILTER
U9
LOW-PASS
FILTER
V9
LOW-PASS
FILTER
9
99
SIN/COS
DDS BLOCK
9 9-BIT
DAC
9 9-BIT
DAC
9 9-BIT
DAC
DAC A
(PIN 31)
DAC B
(PIN 27)
DAC C
(PIN 26)
VOLTAGE
REFERENCE
CIRCUIT
VREF
RSET
COMP
CLOCK CLOCK CLOCK/2 RESET SCLOCK SDATA ALSB
GND
Figure 1.
Rev. C
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.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 © 2005 Analog Devices, Inc. All rights reserved.






ADV7178 Datasheet, Funktion
ADV7177/ADV7178
3.3 V SPECIFICATIONS
VAA = 3.0 V to 3.6 V1, VREF = 1.235 V, RSET = 300 Ω. All specifications TMIN to TMAX2, unless otherwise noted.
Table 2.
Parameter
STATIC PERFORMANCE3
Resolution (Each DAC)
Accuracy (Each DAC)
Integral Nonlinearity
Differential Nonlinearity
DIGITAL INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN3, 4
Input Current, IIN3, 5
Input Capacitance, CIN
DIGITAL OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
Three-State Leakage Current3
Three-State Output Capacitance3
ANALOG OUTPUTS3
Output Current6, 7
Output Current8
DAC-to-DAC Matching
Output Compliance, VOC
Output Impedance, ROUT
Output Capacitance, COUT
POWER REQUIREMENTS3, 9
VAA
Normal Power Mode
IDAC (max)10
IDAC (min)3
ICCT9
Low Power Mode
IDAC (max)3
IDAC (min)3
ICCT11
Power-Supply Rejection Ratio
Conditions1
Guaranteed monotonic
VIN = 0.4 V or 2.4 V
VIN = 0.4 V or 2.4 V
ISOURCE = 400 µA
ISINK = 3.2 mA
RSET = 300 , RL = 75 Ω
IOUT = 0 mA
RSET = 300 Ω, RL = 150 Ω
COMP = 0.1 µF
Min
16.5
0
3.0
Typ
2
0.8
10
2.4
0.4
10
17.35
5
2.0
15
3.3
113
15
45
60
25
45
0.01
Max
9
±0.5
±0.5
±1
±50
10
18.5
1.4
30
3.6
116
0.5
Unit
Bits
LSB
LSB
V
V
µA
µA
pF
V
V
µA
pF
mA
mA
%
V
kΩ
pF
V
mA
mA
mA
mA
mA
mA
%/%
1 The max/min specifications are guaranteed over this range. The max/min values are typical over 3.0 V to 3.6 V.
2 Temperature range TMIN to TMAX: 0°C to 70°C.
3 Guaranteed by characterization.
4 All digital input pins except pins RESET, OSD0, and CLOCK.
5 Excluding all digital input pins except pins RESET, OSD0, and CLOCK.
6 Full drive into 75 Ω load.
7 DACs can output 35 mA typically at 3.3 V (RSET = 150 Ω and RL = 75 Ω), optimum performance obtained at 18 mA DAC current (RSET = 300 Ω and RL = 150 Ω).
8 Minimum drive current (used with buffered/scaled output load).
9 Power measurements are taken with clock frequency = 27 MHz. Max TJ = 110°C.
10 IDAC is the total current (min corresponds to 5 mA output per DAC, max corresponds to 38 mA output per DAC) to drive all three DACs. Turning off individual DACs
reduces IDAC correspondingly.
11 ICCT (circuit current) is the continuous current required to drive the device.
Rev. C | Page 6 of 44

6 Page









ADV7178 pdf, datenblatt
ADV7177/ADV7178
ABSOLUTE MAXIMUM RATINGS
STRESS RATINGS
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Table 7.
Parameter
VAA to GND
Voltage on Any Digital Input Pin
Storage Temperature (TS)
Junction Temperature (TJ)
Lead Temperature
(Soldering, 10 sec)
Analog Outputs to GND1
Rating
7V
GND – 0.5 V to VAA + 0.5 V
–65°C to +150°C
150°C
260°C
GND – 0.5 V to VAA
1 Analog output short circuit to any power supply or common can be of an
indefinite duration.
PACKAGE THERMAL PERFORMANCE
The 44-lead MQFP package used for this device has a junction-
to-ambient thermal resistance (θJA) in still air on a 4-layer PCB
of 53.2°C/W. The junction-to-case thermal resistance (θ JC) is
18.8°C/W. Care must be taken when operating the part in
certain conditions to prevent overheating. Table 8 lists the
conditions to use when using the part.
Table 8. Allowable Operating Conditions
Condition
3 DACs on, double 75 R1
3 DACs on, low power2
3 DACs on, buffered3
2 DACs on, double 75 R
2 DACs on, low power
2 DACs on, buffered
5V
No
Yes
Yes
No
Yes
Yes
3V
Yes
Yes
Yes
Yes
Yes
Yes
1 DAC on, double 75 R refers to a condition where the DACs are terminated
into a double 75 R load and low power mode is disabled.
2 DAC on, low power refers to a condition where the DACs are terminated in
a double 75 R load and low power mode is enabled.
3 DAC on, buffered refers to a condition where the DAC current is reduced to
5 mA and external buffers are used to drive the video loads.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. C | Page 12 of 44

12 Page





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