Analog Devices ADV7120KST50, ADV7120KST30, ADV7120KP80, ADV7120KP50, ADV7120KP30 Datasheet

a	CMOS
	80 MHz, Triple 8-Bit Video DAC

ADV7120

FEATURES

FUNCTIONAL BLOCK DIAGRAM

80 MHz Pipelined Operation

Triple 8-Bit D/A Converters

VAA

FS

VREF

RS-343A/RS-170 Compatible Outputs

ADJUST

TTL Compatible Inputs

REFERENCE

+5 V CMOS Monolithic Construction

ADV7120

AMPLIFIER

40-Pin DIP or 44-Pin PLCC and 48-Lead TQFP

CLOCK

COMP

APPLICATIONS

R0

8

RED

8

High Resolution Color Graphics

REGISTER

DAC

IOR

R7

CAE/CAD/CAM Applications

Image Processing

PIXEL

G0

GREEN

8

INPUT

8

Instrumentation

G7

REGISTER

DAC

IOG

PORT

Video Signal Reconstruction

Desktop Publishing

B0

8

BLUE

8

Direct Digital Synthesis (DDS) and I/Q Modulation

REGISTER

DAC

IOB

B7

SPEED GRADES*

80 MHz

REF WHITE

CONTROL

50 MHz

BLANK

REGISTER

SYNC

ISYNC

SYNC

CONTROL

30 MHz

GND

GENERAL DESCRIPTION

The ADV7120 (ADV®) is a digital to analog video converter on a single monolithic chip. The part is specifically designed for high resolution color graphics and video systems. It is also ideal for any high speed communications type applications requiring low cost, high speed DACs. It consists of three, high speed, 8-bit, video D/A converters (RGB); a standard TTL input interface and high impedance, analog output, current sources.

The ADV7120 has three separate, 8-bit, pixel input ports, one each for red, green and blue video data. Additional video input controls on the part include composite sync, blank and reference white. A single +5 V supply, an external 1.23 V reference and pixel clock input are all that are required to make the part operational.

The ADV7120 is capable of generating RGB video output signals, which are compatible with RS-343A and RS-170 video standards, without requiring external buffering.

The ADV7120 is fabricated in a +5 V CMOS process. Its monolithic CMOS construction ensures greater functionality with low power dissipation. The part is packaged in both a 0.6", 40-pin plastic DIP and a 44-pin plastic leaded (J-lead) chip carrier, PLCC. The ADV7120 is also available in a very small 48lead Thin Quad Flatpack (TQFP).

ADV is a registered trademark of Analog Devices, Inc.

*Speed grades up to 140 MHz are also available upon special request. Please contact Analog Devices or its representatives for further details.

PRODUCT HIGHLIGHTS

1.Fast video refresh rate, 80 MHz.

2.Compatible with a wide variety of high resolution color graphics video systems.

3.Guaranteed monotonic with a maximum differential nonlinearity of ±0.5 LSB. Integral nonlinearity is guaranteed to be a maximum of ±1 LSB.

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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: [phone] Fax: [phone]

		(VAA = +5 V 6 5%; VREF = +1.235 V; RL = 37.5 V, CL = 10 pF; RSET = 560 V.
ADV7120–SPECIFICATIONS ISYNC connected to I0G. All Specifications TMIN to TMAX1 unless otherwise noted.)
Parameter	All Versions	Units	Test Conditions/Comments
STATIC PERFORMANCE
Resolution (Each DAC)	8	Bits
Accuracy (Each DAC)	±1
Integral Nonlinearity, INL		LSB max
Differential Nonlinearity, DNL	±0.5	LSB max	Guaranteed Monotonic
Gray Scale Error	±5	% Gray Scale max	Max Gray Scale Current: IOG = (VREF* 12,082/RSET) mA
			IOR, IOB = (VREF* 8,627/RSET) mA
Coding	Binary
DIGITAL INPUTS
Input High Voltage, VINH	2	V min
Input Low Voltage, VINL	0.8	V max
Input Current, IIN	± 1	μA max	VIN = 0.4 V or 2.4 V
Input Capacitance, CIN2	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
Blank Level on IOR, IOB	0	μA min	Typically 5 μA
	50	μA max
Blank 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	69.1	μA typ
DAC to DAC Matching	5	% max	Typically 2%
Output Compliance, VOC	–1	V min
	+1.4	V max
2	100	kΩ typ
Output Impedance, ROUT
2	30	pF max	IOUT = 0 mA
Output Capacitance, COUT
VOLTAGE REFERENCE
Voltage Reference Range, VREF	1.14/1.26	V min/V max	VREF = 1.235 V for Specified Performance
Input Current, IVREF	–5	mA typ
POWER REQUIREMENTS
VAA	5	V nom
IAA	125	mA max	Typically 80 mA: 80 MHz Parts
	100	mA max	Typically 70 mA: 50 MHz & 35 MHz Parts
Power Supply Rejection Ratio	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 & 30 MHz Parts
DYNAMIC PERFORMANCE
Glitch Impulse2, 3	50	pV secs typ
DAC Noise2, 3, 4	200	pV secs typ
Analog Output Skew	2	ns max	Typically 1 ns

NOTES

1Temperature range (TMIN to TMIN); 0°C to +70°C. 2Sample tested at +25°C to ensure compliance.

3TTL 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.

4This includes effects due to clock and data feedthrough as well as RGB analog crosstalk.

Specifications subject to change without notice.

–2–

REV. B

						ADV7120
TIMING CHARACTERISTICS1			(VAA = +5 V 6 5%; VREF = +1.235 V; RL = 37.5 V, CL = 10 pF; RSET = 560 V.
			ISYNC connected to IOG. All Specifications TMIN to TMAX2 unless otherwise noted.)
Parameter	80 MHz Version	50 MHz Version		30 MHz Version	Units	Conditions/Comments
fMAX	80	50		30	MHz max	Clock Rate
tl	3	6		8	ns min	Data & Control Setup Time
t2	2	2		2	ns min	Data & Control Hold Time
t3	12.5	20		33.3	ns min	Clock Cycle Time
t4	4	7		9	ns min	Clock Pulse Width High Time
t5	4	7		9	ns min	Clock Pulse Width Low Time
t6	30	30		30	ns max	Analog Output Delay
	20	20		20	ns typ
t7	3	3		3	ns max	Analog Output Rise/Fall Time
t83	12	15		15	ns typ	Analog Output Transition Time

NOTES

1TTL 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.

2Temperature range (TMIN to TMAX): 0°C to +70°C 3Sample tested at +25°C to ensure compliance.

Specifications subject to change without notice.

	t4			t5
CLOCK
					t2
		t	3
					t1
DIGITAL INPUTS
(R0-R7, G0-G7, B0-B7;					DATA
SYNC, BLANK,
REF WHITE)					t6		t8

ANALOG OUTPUTS

(IOR, IOG, IOB, ISYNC )

t7

NOTES

1.OUTPUT DELAY (t6) MEASURED FROM THE 50% POINT OF THE RISING EDGE OF CLOCK TO THE 50% POINT OF FULL-SCALE TRANSITION.

2.TRANSITION TIME (t8) MEASURED FROM THE 50% POINT OF FULL-SCALE TRANSITION TO WITHIN 2% OF THE FINAL OUTPUT VALUE.

3.OUTPUT RISE/FALL TIME (t7) MEASURED BETWEEN THE 10% AND 90% POINTS OF FULL TRANSITION.

Figure 1. Video Input/Output Timing

REV. B

–3–

ADV7120

RECOMMENDED OPERATING CONDITIONS

Parameter	Symbol	Min	Typ	Max	Units
Power Supply	VAA	4.75	5.00	5.25	Volts
Ambient Operating		0		+70	°C
Temperature	TA
Output Load	RL		37.5		Ω
Reference Voltage	VREF	1.14	1.235	1.26	Volts
ABSOLUTE MAXIMUM RATINGS1
VAA to GND . . . .	. . . . . . . . .	. . . . . .	. . . . . . .	. . . . . .	. . +7 V

Voltage on Any Digital Pin . . . . . GND –0.5 V to VAA +0.5 V
Ambient Operating Temperature (TA) . . . . .	. . . 0°C to +70°C
Storage Temperature (TS) . . . . . . . . . . . . . .	–65°C to +150°C
Junction Temperature (TJ) . . . . . . . . . . . . . .	. . . . . . +150°C
Soldering Temperature (10 secs) . . . . . . . . . .	. . . . . . . . 300°C
Vapor Phase Soldering (1 minute) . . . . . . . . .	. . . . . . . . 220°C
IOR, IOB, IOG, ISYNC to GND2 . . . . . . . . . .	. . . . 0 V to VAA

NOTES

1Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and 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.

2Analog Output Short Circuit to any Power Supply or Common can be of an indefinite duration.

ORDERING GUIDE

		Temperature	Package
Model	Speed	Range1	Option2
ADV7120KN80	80 MHz	0°C to +70°C	N-40A
ADV7120KN50	50 MHz	0°C to +70°C	N-40A
ADV7120KN30	30 MHz	0°C to +70°C	N-40A
ADV7120KP80	80 MHz	0°C to +70°C	P-44A
ADV7120KP50	50 MHz	0°C to +70°C	P-44A
ADV7120KP30	30 MHz	0°C to +70°C	P-44A
ADV7120KST50	50 MHz	0°C to +70°C	ST-48
ADV7120KST30	30 MHz	0°C to +70°C	ST-48

NOTES

1Industrial temperature range (–40°C to +85°C) version available to special request. Please consult your local Analog Device representative.

2N = Plastic DIP; P = Plastic Leaded Chip Carrier.

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 the ADV7120 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.

PIN CONFIGURATIONS

DIP

PLCC

WARNING!

ESD SENSITIVE DEVICE

TQFP

R4						R3
	1				40
R5						R2
	2				39
R6						R1
	3				38
R7						R0
	4				37
G0						FS ADJUST
	5				36			G0	7
G1						VREF
	6				35			G1	8
G2
	7				34	COMP		G2	9
G3	8				33	IOR		G3	10
G4	9	ADV7120			32	IOG		G4	11
G5	10				31	ISYNC
		TOP VIEW						G5	12
G6	11	(Not to Scale)			30	VAA		G6	13
G7	12				29	IOB
BLANK								G7	14
	13				28	GND
							BLANK		15
SYNC	14				27	GND
								SYNC 16
V	15				26	GND
AA
								VAA	17
B0	16				25	CLOCK
B1	17				24	REF WHITE
B2	18				23	B7
B3	19				22	B6
B4	20				21	B5

R7	R6	R5	R4	R3	R2	R1	R0	ADJUSTFS	V	COMP					GND		R7		R6		R5		R4		R3		R2		R1		R0		GND		GND		NC
									REF
															48		47		46		45		44		43		42		41		40		39		38		37
6	5	4	3	2	1	44	43	42	41	40		GND																												FS ADJUST
													1																										36
										39	IOR	G0																												V
													2																										35
																																								REF
										38	IOG	G1																												COMP
													3																										34
										37	ISYNC	G2																												IOR
													4																										33
										36	VAA	G3																												IOG
													5											ADV7120															32
										35		G4																												VAA
				ADV7120							VAA		6											TOP VIEW															31
				TOP VIEW								G5																												VAA
										34	VAA		7										(Not to Scale)																30
				(Not to Scale)								G6																												IOB
										33	IOB		8																										29
												G7																												GND
										32	GND		9																										28
																																								GND
										31	GND	BLANK	10																										27
																																								CLOCK
										30	GND	SYNC	11																										26
												VAA																												NC
										29	GND		12																										25
18	19	20	21	22	23	24	25	26	27	28					13		14		15		16		17		18		19		20		21		22		23		24
															NC		GND		GND		B0		B1		B2		B3		B4		B5		B6		B7		NC
B0	B1	B2	B3	B4	B5	B6	B7	WHITEREF	CLOCK	GND

NC = NO CONNECT

NOTE

For the ADV7120 in TQFP package: The REF WHITE pin is not available. The ISYNC pin is not available and is internally connected to the IOG pin.

–4–

REV. B