Analog Devices AD8075ARU, AD8075, AD8074ARU, AD8074 Datasheet

500 MHz, G = +1 and +2 Triple

a

FEATURES
Dual Supply ⴞ5 V
High-Speed Fully Buffered Inputs and Outputs

600 MHz Bandwidth (–3 dB) 200 mV p-p
500 MHz Bandwidth (–3 dB) 2 V p-p
1600 V/␮s Slew Rate, G = +1

1350 V/␮s Slew Rate, G = +2
Fast Settling Time: 4 ns
Low Supply Current: <30 mA
Excellent Video Specifications (R

Gain Flatness of 0.1 dB to 50 MHz

0.01% Differential Gain Error

0.01ⴗ Differential Phase Error

“All Hostile“ Crosstalk

–80 dB @ 10 MHz

–50 dB @ 100 MHz
High “OFF” Isolation of 90 dB @ 10 MHz
Low Cost
Fast Output Disable Feature

APPLICATIONS
RGB Buffer in LCD and Plasma Displays
RGB Driver
Video Routers

= 150 ⍀):

L

Video Buffers with Disable

AD8074/AD8075

FUNCTIONAL BLOCK DIAGRAM

AD8074 /AD8075

OE

DGND

IN2

AGND

IN1

AGND

IN0

V

1

2

G =

3

+1/+2

4

G =

5

+1/+2

6

G =

7

+1/+2

8

EE

V

16

CC

V

15

CC

14

OUT2

13

V

EE

12

OUT1

V

11

CC

OUT0

10

V

9

EE

PRODUCT DESCRIPTION

The AD8074/AD8075 are high-speed triple video buffers with
G = +1 and +2 respectively. They have a –3 dB full signal band­width in excess of 450 MHz, along with slew rates in excess of
1400 V/µs. With better than –80 dB of all hostile crosstalk and
90 dB isolation, they are useful in many high-speed applica­tions. The differential gain and differential phase error are 0.01%
and 0.01°. Gain flatness of 0.1 dB up to 50 MHz makes the
AD8074/AD8075 ideal for RGB buffering or driving. They
consume less than 30 mA on a ±5 V supply.

Both devices offer a high-speed disable feature that allows the
outputs to be put into a high impedance state. This allows the
building of larger input arrays while minimizing “OFF” chan­nel output loading. The AD8074/AD8075 are offered in a
16-lead TSSOP package.

REV. A

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.

Table I. Truth Table

OE OUT0, 1, 2

0 IN0, IN1, IN2
1 High Z

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] © Analog Devices, Inc., 2001

AD8074/AD8075–SPECIFICATIONS

(TA = 25ⴗC, VS = ⴞ5 V, unless otherwise noted.)

Parameter Conditions Min Typ Max Unit

DYNAMIC PERFORMANCE

–3 dB Bandwidth (Small Signal) V

–3 dB Bandwidth (Large Signal) V

0.1 dB Bandwidth V

Slew Rate 2 V Step, R

= 200 mV p-p, CL = 5 pF 330/310 600/550 MHz

IN

V

= 200 mV p-p, RL = 150 Ω 250/230 400/400 MHz

IN

= 2 V p-p, CL = 5 pF 330/300 500/500 MHz

IN

V

= 2 V p-p, RL = 150 Ω 250/230 350/350 MHz

IN

= 200 mV p-p, CL = 5 pF 70/65 MHz

IN

V

= 200 mV p-p, RL = 150 Ω 70/65 MHz

IN

= 1 kΩ/150 Ω 1600/1350 V/µs

L

Settling Time to 0.1% 2 V Step, RL = 1 kΩ/150 Ω 4/7.5 ns

NOISE/DISTORTION PERFORMANCE

Differential Gain V = 3.58 MHz, 150 Ω 0.01 %
Differential Phase V = 3.58 MHz, 150 Ω 0.01 Degrees
All Hostile Crosstalk V = 10 MHz, R

V = 100 MHz, R

OFF Isolation V = 10 MHz, R

= 1 kΩ –80/–74 dB

L

= 1 kΩ –50/–44 dB

L

= 150 Ω 90 dB

L

Voltage Noise V = 10 kHz to 100 MHz 19.5/22 nV/√Hz

DC PERFORMANCE

Voltage Gain Error No Load ±0.1/±0.2 ±0.15/± 0.65 %
Input Offset Voltage 2.5 27/40 mV

to T

T

MIN

MAX

3mV

Input Offset Drift 10 µV/°C
Input Bias Current 5 9.5/10 µA

INPUT CHARACTERISTICS

Input Resistance 10 MΩ
Input Capacitance Channel Enabled 1.5 pF

Channel Disabled 1.5 pF

Input Voltage Range ±2.8/±1.4 V

OUTPUT CHARACTERISTICS

Output Voltage Swing R

= 1 kΩ +VS – 1.95 +VS – 1.8 V

L

R

= 150 Ω +VS – 2.35 +VS – 2.2 V

L

+ 2.1 –VS + 1.8 V

–V

S

+ 2.30 –VS + 2.2 V

–V

S

Short Circuit Current (Protected) 70 mA
Output Resistance Enabled 0.5 Ω

Disabled 3.5 7.5 MΩ

Output Capacitance Disabled 2.2 pF

POWER SUPPLY

Operating Range ±4.5 ±5.5 V
Power Supply Rejection Ratio +PSRR: +V

–PSRR: –V

= +4.5 V to +5.5 V, –VS = –5 V 60 74 dB

S

= –4.5 V to –5.5 V, +VS = +5 V 56 64 dB

S

Quiescent Current All Channels “ON” 21.5/24 30 mA

All Channels “OFF” 3/4 5.5 mA
T

MIN

to T

MAX

23/26 mA

DIGITAL INPUT

Logic “1” Voltage OE Input 2.0 V
Logic “0” Voltage OE Input 0.8 V
Logic “1” Input Current OE = 4 V 100 nA
Logic “0” Input Current OE = 0.4 V 1 µA

OPERATING TEMPERATURE RANGE

Temperature Range Operating (Still Air) –40 +85 °C

θ

JA

θ

JC

Specifications subject to change without notice.

Operating (Still Air) 150.4 °C/W
Operating 27.6 °C/W

–2–

REV. A

AD8074/AD8075

AMBIENT TEMPERATURE – ⴗC

MAXIMUM POWER DISSIPATION – Watts

TJ = 150ⴗC

010 30 50

70

90

0

0.5

1.0

1.5

–50 –30 –10

ABSOLUTE MAXIMUM RATINGS

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.0 V

Internal Power Dissipation

2, 3

1

AD8074/AD8075 16-Lead TSSOP (RU) . . . . . . . . . . . . . 1 W

Input Voltage

IN0, IN1, IN2 . . . . . . . . . . . . . . . . . . . . . . . . . VEE ≤ VIN ≤ V

OE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DGND ≤ VIN ≤ V

Output Short Circuit Duration . . . . . . . . . . . . . . . . . . Indefinite

CC

CC

3

Storage Temperature Range . . . . . . . . . . . . . . –65°C to +150°C

Lead Temperature Range (Soldering 10 sec) . . . . . . . . . . . 300°C

NOTES

1

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 indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.

2

Specification is for device in free air (TA = 25°C).

3

16-lead plastic TSSOP; θJA = 150.4°C/W. Maximum internal power dissipa­tion (P

) should be derated for ambient temperature (TA) such that

D

PD < (150°C – TA)/θJA.

ORDERING GUIDE

Temperature Package Package

Model Range Description Option

AD8074ARU –40°C to +85°C 16-Lead Plastic TSSOP RU-16
AD8075ARU –40°C to +85°C 16-Lead Plastic TSSOP RU-16
AD8074-EVAL Evaluation Board
AD8075-EVAL Evaluation Board

PIN CONFIGURATION

AD8074 /AD8075

OE

DGND

IN2

AGND

IN1

AGND

IN0

V

1

2

G =

3

+1/+2

4

G =

5

+1/+2

6

G =

7

+1/+2

8

EE

V

16

CC

V

15

CC

14

OUT2

13

V

EE

12

OUT1

V

11

CC

OUT0

10

V

9

EE

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 AD8074/AD8075 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.

MAXIMUM POWER DISSIPATION

The maximum power that can be safely dissipated by the AD8074/
AD8075 is limited by the associated rise in junction temperature.
The maximum safe junction temperature for plastic encapsulated
devices is determined by the glass transition temperature of the
plastic, approximately 150°C. Temporarily exceeding this limit
may cause a shift in parametric performance due to a change in
the stresses exerted on the die by the package. Exceeding a junc­tion temperature of 175°C for an extended period can result in
device failure.

While the AD8074/AD8075 is internally short circuit protected,
this may not be sufficient to guarantee that the maximum junction
temperature (150°C) is not exceeded under all conditions. To
ensure proper operation, it is necessary to observe the maximum
power derating curves shown in Figure 1.

Figure 1. Maximum Power Dissipation vs. Temperature

WARNING!

ESD SENSITIVE DEVICE

REV. A

–3–

AD8074/AD8075–Typical Performance Characteristics

FLATNESS

GAIN

2V p-p

200mV p-p

2V p-p

FREQUENCY – MHz

0.1 10001 10 100

1

0

–1

–2

–3

–4

–5

–6

–7

–8

–9

0.4

0.3

0.2

0.1

0

–0.1

–0.2

–0.3

–0.4

–0.5

–0.6

NORMALIZED FLATNESS – dB

NORMALIZED GAIN – dB

0.1 10001 10 100

2

1

0

–1

–2

–3

–4

–5

–6

–7

–8

–9

–10

0.6

0.5

0.4

0.3

0.2

0.1

0

–0.1

–0.2

–0.3

–0.4

–0.5

–0.6

2V p-p

GAIN

FLATNESS

NORMALIZED FLATNESS – dB

NORMALIZED GAIN – dB

200mV p-p

FREQUENCY – MHz

2V p-p

1

GAIN

0

–1

–2

FLATNESS

–3

–4

GAIN – dB

–5

–6

–7

–8

–9

0.1 10001 10 100
FREQUENCY – MHz

200mV p-p

2V p-p

TPC 1. AD8074 Frequency Response; RL = 150

2

1

GAIN

0

–1

–2

–3

FLATNESS

–4

–5

GAIN – dB

–6

–7

–8

–9

–10

0.1 10001 10 100

200mV p-p
2V p-p

FREQUENCY – MHz

2V p-p

200mV p-p

0.4

0.3

0.2

0.1

0

–0.1

–0.2

–0.3

–0.4

–0.5

–0.6

Ω

0.6

0.5

0.4

0.3

0.2

0.1

0

–0.1

–0.2

–0.3

–0.4

–0.5

–0.6

FLATNESS – dB

FLATNESS – dB

TPC 4. AD8075 Frequency Response; RL = 150

Ω

TPC 2. AD8074 Frequency Response; RL = 1 kΩ, CL = 5 pF

3

2

1

0

–1

–2

–3

–4

GAIN – dB

V

–5

IN

75

–6

–7

–8

TPC 3. AD8074 Frequency Response vs. Capacitive Load

–9

–10

0.1 1 10 100 1000

⍀

V

= 2V p-p

OUT

CL = 10pF

CL = 0pF

CL = 5pF

C

FREQUENCY – MHz

L

1k

TPC 5. AD8075 Frequency Response; RL = 1 kΩ, CL = 5 pF

3

2

1

0

–1

–2

–3

–4

V

OUT

⍀

–4–

–5

V

IN

NORMALIZED GAIN – dB

–10

–6

–7

–8

–9

75⍀

V

= 2V p-p

OUT

0.1 1 10 100 1000
FREQUENCY – MHz

TPC 6. AD8075 Frequency Response vs. Capacitive Load

CL = 10pF

CL = 0pF

CL = 5pF

V

C

L

150k⍀

OUT

REV. A

0

FREQUENCY – MHz

0

0.1 1000

1 10 100

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–110

V

OUT

= 2V p-p (ACTIVE CHANNEL(s))

R

L

= 150⍀

R

T

= 37.5⍀

ALL-HOSTILE

ADJACENT

CROSSTALK – dB

V

= 2V p-p (ACTIVE CHANNEL(s))

OUT

–10

= 1k⍀

R

L

= 37.5⍀

R

T

–20

–30

–40

–50

–60

ALL-HOSTILE

ADJACENT

1 10 100

FREQUENCY – MHz

–70

CROSSTALK – dB

–80

–90

–100

–110

0.1 1000

TPC 7. AD8074 Crosstalk vs. Frequency (All Hostile and
Adjacent R

= 1 kΩ)

L

AD8074/AD8075

TPC 9. AD8075 Crosstalk vs. Frequency (All Hostile and
Adjacent R

= 150 Ω)

L

0

V

= 2V p-p

OUT

–10

= 150⍀

R

L

= 37.5⍀

R

T

–20

–30

–40

–50

–60

DISTORTION – dBc

–70

–80

–90

–100

1 100010 100

SECOND

HARMONIC

THIRD

HARMONIC

FUNDAMENTAL FREQUENCY – MHz

TPC 8. AD8074 Distortion vs. Frequency

0

V

= 2V p-p

OUT

–10

–20

–30

–40

–50

–60

DISTORTION – dBc

–70

–80

–90

–100

= 150⍀

R

L

= 37.5⍀

R

T

SECOND

HARMONIC

THIRD

HARMONIC

1 100010 100

FUNDAMENTAL FREQUENCY – MHz

TPC 10. AD8075 Distortion vs. Frequency

REV. A

–5–