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ADV7122
Datasheet
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Analog Devices ADV7122 Datasheet

CMOS
a
FEATURES 80 MHz Pipelined Operation Triple 10-Bit D/A Converters RS-343A/RS-170 Compatible Outputs TTL Compatible Inputs +5 V CMOS Monolithic Construction 40-Pin DIP Package (ADV7121) 44-Pin PLCC Package (ADV7122) 48-Lead TQFP (ADV7122)
APPLICATIONS High Definition Television (HDTV) High Resolution Color Graphics CAE/CAD/CAM Applications Image Processing Instrumentation Video Signal Reconstruction Direct Digital Synthesis (DDS) I/Q Modulation
SPEED GRADES 80 MHz 50 MHz 30 MHz
GENERAL DESCRIPTION
The ADV7121/ADV7122 (ADV®) is a video speed, digital-to­analog converter on a single monolithic chip. The part is specifi­cally designed for high resolution color graphics and video systems including high definition television (HDTV). It is also ideal for any application requiring a low cost, high speed DAC function especially in communications. It consists of three, high speed, 10-bit, video D/A converters (RGB), a standard TTL input interface and high impedance, analog output, current sources.
The ADV7121/ADV7122 has three separate, 10-bit, pixel input ports, one each for red, green and blue video data. A single +5 V power supply, an external 1.23 V reference and pixel clock input is all that is required to make the part operational. The ADV7122 has additional video control signals, composite
The ADV7121/ADV7122 is capable of generating RGB video output signals which are compatible with RS-343A, RS-170 and most proposed production system HDTV video standards, in­cluding SMPTE 240M.
The ADV7121/ADV7122 is fabricated in a +5 V CMOS pro­cess. Its monolithic CMOS construction ensures greater func­tionality with low power dissipation. The ADV7121 is packaged in a 0.6", 40-pin plastic DIP package. The ADV7122 is pack-
ADV is a registered trademark of Analog Devices, Inc. *Speed grades up to 140 MHz are also available on special request.
Please contact Analog Devices or its representatives for details.
REV. B
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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
SYNC and BLANK.
ADV7121/ADV7122
ADV7121 FUNCTIONAL BLOCK DIAGRAM
V
AA
ADV7121
CLOCK
PIXEL INPUT
PORT
R0 R9
G0 G9
B0 B9
10
10
10
GND
ADV7122 FUNCTIONAL BLOCK DIAGRAM
V
AA
ADV7122
CLOCK
PIXEL
INPUT
PORT
R0 R9
G0 G9
B0 B9
BLANK
SYNC
10
10
10
GND
aged in a 44-pin plastic leaded (J-lead) chip carrier, PLCC, and 48-lead thin quad flatpack (TQFP).
PRODUCT HIGHLIGHTS
1. Fast video refresh rate, 80 MHz.
2. Guaranteed monotonic to 10 bits. Ten bits of resolution al­lows for implementation of linearization functions such as gamma correction and contrast enhancement.
3. Compatible with a wide variety of high resolution color graphics systems including RS-343A/RS-170 and the pro­posed SMPTE 240M standard for HDTV.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703
FS
ADJUST
RED
REGISTER
GREEN
REGISTER
BLUE
REGISTER
FS
ADJUST
RED
REGISTER
GREEN
REGISTER
BLUE
REGISTER
CONTROL
REGISTER
V
REF
REFERENCE AMPLIFIER
10
10
10
V
REF
10
10
10
© Analog Devices, Inc., 1996
DAC
DAC
DAC
REFERENCE AMPLIFIER
DAC
DAC
DAC
SYNC
CONTROL
COMP
IOR
IOG
IOB
COMP
IOR
IOG
IOB
ADV7121–SPECIFICATIONS
(VAA = +5 V 6 5%; V Specifications T
= +1.235 V; RL = 3.75 V, CL = 10 pF; R
REF
1
to T
MIN
unless otherwise noted.)
MAX
Parameter K Version Units Test Conditions/Comments
STATIC PERFORMANCE
Resolution (Each DAC) 10 Bits Accuracy (Each DAC)
Integral Nonlinearity, INL ±2 LSB max Differential Nonlinearity, DNL ±1 LSB max Guaranteed Monotonic Gray Scale Error ±5 % Gray Scale max Max Gray Scale Current = (V
REF
Coding Binary
DIGITAL INPUTS
Input High Voltage, V Input Low Voltage, V Input Current, I Input Capacitance, C
INL
IN
IN
INH
2
2 V min
0.8 V max ±1 µA max VIN = 0.4 V or 2.4 V 10 pF max
ANALOG OUTPUTS
Gray Scale Current Range 15 mA min
22 mA max
Output Current
White Level 16.74 mA min Typically 17.62 mA
18.50 mA max
Black Level 0 µA min Typically 5 µA
50 µA max
LSB Size 17.28 µA typ DAC to DAC Matching 5 % max Typically 2% Output Compliance, V
Output Impedance, R
OC
OUT
Output Capacitance, C
OUT
2
2
–1 V min +1.4 V max 100 kΩ typ 30 pF max I
OUT
= 0 mA
VOLTAGE REFERENCE
Voltage Reference Range, V Input Current, I
VREF
REF
1.14/1.26 V min/V max V –5 mA typ
= 1.235 V for Specified Performance
REF
POWER REQUIREMENTS
V
AA
I
AA
Power Supply Rejection Ratio
5 V nom 125 mA max Typically 80 mA: 80 MHz Parts 100 mA max Typically 70 mA: 50 MHz & 35 MHz Parts
2
0.5 %/% max Typically 0.12 %/%: f = 1 kHz, COMP = 0.1 µF
Power Dissipation 625 mW max Typically 400 mW: 80 MHz Parts
500 mW max Typically 350 mW: 50 MHz & 35 MHz Parts
= 560 V. All
SET
* 7,969/R
SET
) mA
DYNAMIC PERFORMANCE
Glitch Impulse DAC Noise
2, 3, 4
2, 3
50 pV secs typ 200 pV secs typ
Analog Output Skew 2 ns max Typically 1 ns
NOTES
1
Temperature range (T
2
Sample tested at +25°C to ensure compliance.
3
TTL input values are 0 to 3 volts, with input rise/fall times ≤ 3 ns, measured between the 10% and 90% points. Timing reference points at 50% for inputs and
outputs. See timing notes in Figure 1.
4
This includes effects due to clock and data feedthrough as well as RGB analog crosstalk.
Specifications subject to change without notice.
MIN
to T
MAX
): 0°C to +70°C.
–2–
REV. B
ADV7122–SPECIFICATIONS
(VAA = +5 V 6 5%; V Specifications T
= +1.235 V; RL = 37.5 V, CL = 10 pF; R
REF
1
to T
MIN
unless otherwise noted.)
MAX
Parameter K Version Units Test Conditions/Comments
STATIC PERFORMANCE
Resolution (Each DAC) 10 Bits Accuracy (Each DAC)
Integral Nonlinearity, INL ±2 LSB max Differential Nonlinearity, DNL ±1 LSB max Guaranteed Monotonic Gray Scale Error ±5 % Gray Scale max Max Gray Scale Current: IOG = (V
Max Gray Scale Current: IOR, IOB = (V
Coding Binary
DIGITAL INPUTS
Input High Voltage, V Input Low Voltage, V Input Current, I Input Capacitance, C
INL
IN
IN
INH
2
2 V min
0.8 V max ±1 µA max VIN = 0.4 V or 2.4 V 10 pF max
ANALOG OUTPUTS
Gray Scale Current Range 15 mA min
22 mA max
Output Current
White Level Relative to Blank 17.69 mA min Typically 19.05 mA
20.40 mA max
White Level Relative to Black 16.74 mA min Typically 17.62 mA
18.50 mA max
Black Level Relative to Blank 0 95 mA min Typically 1.44 mA
1.90 mA max
Black Level on IOR, IOB 0 µA min Typically 5 µA
50 µA max
Black Level on IOG 6.29 mA min Typically 7.62 mA
9.5 mA max
Sync Level on IOG 0 µA min Typically 5 µA
50 µA max
LSB Size 17.28 µA typ DAC to DAC Matching 5 % max Typically 2% Output Compliance, V
Output Impedance, R
OC
OUT
Output Capacitance, C
OUT
2
2
–1 V min +1.4 V max 100 kΩ typ 30 pF max I
OUT
= 0 mA
VOLTAGE REFERENCE
Voltage Reference Range, V Input Current, I
VREF
REF
1.14/1.26 V min/V max V –5 mA typ
= 1.235 V for Specified Performance
REF
POWER REQUIREMENTS
V
AA
I
AA
Power Supply Rejection Ratio
5 V nom 125 mA max Typically 80 mA: 80 MHz Parts 100 mA max Typically 70 mA: 50 MHz & 35 MHz Parts
2
0.5 %/% max Typically 0.12%/%: f = 1 kHz, COMP = 0.01 µF
Power Dissipation 625 mW max Typically 400 mW: 80 MHz Parts
500 mW max Typically 350 mW: 50 MHz & 35 MHz Parts
ADV7121/ADV7122
= 560 V. All
SET
*12.082/R
REF
REF
SET
*8,627/R
) mA
SET
) mA
DYNAMIC PERFORMANCE
Glitch Impulse DAC Noise
2, 3, 4
2, 3
50 pV secs typ 200 pV secs typ
Analog Output Skew 2 ns max Typically 1 ns
NOTES
1
Temperature range (T
2
Sample tested at +25°C to ensure compliance.
3
TTL input values are 0 to 3 volts, with input rise/fall times ≤ 3 ns, measured between the 10% and 90% points. Timing reference points at 50% for inputs and
outputs. See timing notes in Figure 1.
4
This includes effects due to clock and data feedthrough as well as RGB analog crosstalk.
Specifications subject to change without notice
REV. B
MIN
to T
) 0°C to +70°C.
MAX
–3–
ADV7121/ADV7122
TIMING CHARACTERISTICS
(VAA = +5 V 6 5%; V
1
All Specifications T
= +1.235 V; RL = 37.5 V, CL = 10 pF; R
REF
2
MIN
to T
unless otherwise noted.)
MAX
= 560 V.
SET
Parameter 80 MHz Version 50 MHz Version 30 MHz Version Units Conditions/Comments
fmax 80 50 30 MHz max Clock Rate t
1
t
2
t
3
t
4
t
5
t
6
3 6 8 ns min Data & Control Setup Time 2 2 2 ns min Data & Control Hold Time
12.5 20 33.3 ns min Clock Cycle Time 4 7 9 ns min Clock Pulse Width High Time 4 7 9 ns min Clock Pulse Width Low Time 30 30 30 ns max Analog Output Delay 20 20 20 ns typ
t
7
3
t
8
NOTES
1
TTL input values are 0 to 3 volts, with input rise/fall times ≤ 3 ns, measured between the 10% and 90% points. Timing reference points at 50% for inputs and
outputs. See timing notes in Figure 1.
2
Temperature range (T
3
Sample tested at +25°C to ensure compliance.
Specifications subject to change without notice.
3 3 3 ns max Analog Output Rise/Fall Time 12 15 15 ns typ Analog Output Transition Time
to T
MIN
): 0°C to +70°C.
MAX
CLOCK
DIGITAL INPUTS
(R0–R9, G0–G9, B0–B9;
SYNC, BLANK)
ANALOG OUTPUTS
(IOR, IOG, IOB)
t
3
t
t
4
5
t
t
2
1
DATA
t
8
t
6
t
NOTES
1. OUTPUT DELAY (t6) MEASURED FROM THE 50% POINT OF THE RISING EDGE OF THE CLOCK TO THE 50% POINT OF FULL-SCALE TRANSITION.
2. TRANSITION TIME (t FULL-SCALE TRANSITION TO WITHIN 2% OF THE FINAL OUTPUT VALUE.
3. OUTPUT RISE/FALL TIME (t AND 90% POINTS OF FULL-SCALE TRANSITION.
) MEASURED FROM THE 50% POINT OF
8
) MEASURED BETWEEN THE 10%
7
7
Figure 1. Video Input/Output Timing
RECOMMENDED OPERATING CONDITIONS
Parameter Symbol Min Typ Max Units
Power Supply V
AA
4.75 5.00 5.25 Volts
Ambient Operating
Temperature T Output Load R Reference Voltage V
A L REF
0 +70 °C
37.5 Ω
1.14 1.235 1.26 Volts
–4–
REV. B
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