Datasheet

ManualsBrandsANALOG DEVICES ManualsLinear ICsLinear IC - Op-amp Current feedback LFCSP 24 WQ (4x4)

Triple, 1.5 GHz Op Amp

AD8003

Rev. B

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FEATURES

High speed

1650 MHz (G = +1)

730 MHz (G = +2, V

= 2 V p-p)

4300 V/μs (G = +2, 4 V step)

Settling time 12 ns to 0.1%, 2 V step

Excellent for QXGA resolution video

Gain flatness 0.1 dB to 190 MHz

0.05% differential gain error, R

= 150 Ω

0.01° differential phase error, R

= 150 Ω

Low voltage offset: 0.7 mV (typical)

Low input bias current: 7 μA (typical)

Low noise: 1.8 nV/√Hz

Low distortion over wide bandwidth: SFDR −73 dBc @ 20 MHz

High output drive: 100 mA output load drive

Supply operation: +5 V to ±5 V voltage supply

Supply current: 9.5 mA/amplifier

APPLICATIONS

High resolution video graphics

Professional video

Consumer video

High speed instrumentation

Muxing

CONNECTION DIAGRAM

7 8 9 10 11 12

24 23 22 21 20

FEEDBACK 3

–IN 3

+IN 3

POWER DOWN 3

–V

POWER DOWN 2

+IN 2

–IN 2

FEEDBACK 2

FEEDBACK 1

–IN 1

+IN 1

POWER DOWN 1

–V

OUT 1

OUT 2

OUT 3

05721-001

Figure 1. 24-Lead, 4 mm × 4 mm LFCSP_VQ (CP-24)

GENERAL DESCRIPTION

The AD8003 is a triple ultrahigh speed current feedback amplifier.

Using ADI’s proprietary eXtra Fast Complementary Bipolar

(XFCB) process, the AD8003 achieves a bandwidth of 1.5 GHz

and a slew rate of 4300 V/μs. Additionally, the amplifier provides

excellent dc precision with an input bias current of 50 μA

maximum and a dc input voltage of 0.7 mV.

The AD8003 has excellent video specifications with a frequency

response that remains flat out to 190 MHz and 0.1% settling within

12 ns to ensure that even the most demanding video systems

maintain excellent fidelity. For applications that use NTSC video,

as well as high speed video, the amplifier provides a differential

gain of 0.05% and a differential gain of 0.01°.

The AD8003 has very low spurious-free dynamic range (SFDR)

(−73 dBc @ 20 MHz) and noise (1.8 nV/√Hz). With a supply

range between 5 V and 11 V and ability to source 100 mA of

output current, the AD8003 is ideal for a variety of applications.

The AD8003 operates on only 9.5 mA of supply current per

amplifier. The independent power-down function of the AD8003

reduces the quiescent current even further to 1.6 mA.

The AD8003 amplifier is available in a compact 4 mm × 4 mm,

24-lead LFCSP_VQ. The AD8003 is rated to work over the

industrial temperature range of −40°C to +85°C.

05721-009

1 100 1000

–7

–6

–5

–4

–3

–2

–1

FREQUENCY (MHz)

NORMALIZED CLOSED-LOOP GAIN (dB)

=±5V

G=+1,R

=432Ω

G=+2,+5,R

= 464Ω

=150Ω

OUT

=2Vp-p

G=+1

G=+2

G=+5

Figure 2. Large Signal Frequency Response for Various Gains

Summary of content (17 pages)

PAGE 1
Triple, 1.5 GHz Op Amp AD8003 POWER DOWN 2 +IN 2 –IN 2 FEEDBACK 2 +VS2 CONNECTION DIAGRAM 24 23 22 21 20 19 2 17 FEEDBACK 3 –IN 1 3 16 –IN 3 4 15 POWER DOWN 1 5 14 POWER DOWN 3 –VS1 6 13 –VS3 7 8 9 10 11 12 +IN 3 05721-001 +IN 1 OUT 3 FEEDBACK 1 NC +VS3 OUT 2 18 NC 1 OUT 1 +VS1 NC High speed 1650 MHz (G = +1) 730 MHz (G = +2, VO = 2 V p-p) 4300 V/μs (G = +2, 4 V step) Settling time 12 ns to 0.1%, 2 V step Excellent for QXGA resolution video Gain flatness 0.
PAGE 2
Powered by TCPDF (www.tcpdf.org) IMPORTANT LINKS for the AD8003* Last content update 08/18/2013 12:49 am PARAMETRIC SELECTION TABLES Find Similar Products By Operating Parameters High Speed Amplifiers Selection Table Amplifiers for Video Distribution DESIGN COLLABORATION COMMUNITY Collaborate Online with the ADI support team and other designers about select ADI products. Follow us on Twitter: www.twitter.com/ADI_News Like us on Facebook: www.facebook.
PAGE 3
AD8003 TABLE OF CONTENTS Features .............................................................................................. 1 Gain Configurations .................................................................. 12 Applications ....................................................................................... 1 RGB Video Driver ...................................................................... 12 Connection Diagram .......................................................................
PAGE 4
AD8003 SPECIFICATIONS WITH ±5 V SUPPLY TA = 25°C, VS = ±5 V, RL = 150 Ω, Gain = +2, RF = 464 Ω, unless otherwise noted. Table 1. Parameter DYNAMIC PERFORMANCE –3 dB Bandwidth Conditions Min Max Unit 1650 MHz 730 MHz G = +10, Vo = 0.2 V p-p 290 MHz G = +5, Vo = 2 V p-p 330 MHz Vo = 2 V p-p G = +2, Vo = 2 V step, RL = 150 Ω 190 MHz Slew Rate 3800 V/μs Settling Time to 0.
PAGE 5
AD8003 SPECIFICATIONS WITH +5 V SUPPLY TA = 25°C, VS = 5 V, RL = 150 Ω, Gain = +2, RF = 464 Ω, unless otherwise noted. Table 2. Parameter DYNAMIC PERFORMANCE –3 dB Bandwidth Conditions Min Max Unit 1050 MHz 590 MHz G = +10, Vo = 0.2 V p-p 290 MHz G = +5, Vo = 2 V p-p 310 MHz Vo = 2 V p-p G = +2, Vo = 2 V step, RL = 150 Ω 83 MHz Slew Rate 2860 V/μs Settling Time to 0.
PAGE 6
AD8003 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Power Dissipation Common-Mode Input Voltage Differential Input Voltage Exposed Paddle Voltage Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering 10 sec) Junction Temperature Rating 11 V See Figure 3 −VS − 0.7 V to +VS + 0.7 V ±VS −VS −65°C to +125°C −40°C to +85°C 300°C 150°C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device.
PAGE 7
AD8003 TYPICAL PERFORMANCE CHARACTERISTICS 3 0 –1 –2 –3 G = –1 –4 –5 G = –2 –6 –7 1 10 100 1 –1 –2 G = +10 –3 –4 –5 –6 1 10 NORMALIZED CLOSED-LOOP GAIN (dB) 0 VS = ±5V –1 –2 –3 –4 VS = +5V –5 05721-004 NORMALIZED CLOSED-LOOP GAIN (dB) 3 G = +2 RL = 150Ω VOUT = 200mV p-p 1 –6 –7 1 10 100 1 0 –2 –3 –4 T = +25°C –5 T = –40°C –6 1 10 3 RF = 357Ω 0 RF = 432Ω –1 –2 RF = 464Ω –3 –4 –5 –6 –7 1 10 100 1 RF = 392Ω RF = 357Ω 0 –1 RF = 432Ω –2 RF = 464Ω –3 –4 –5 –6 –7 100
PAGE 8
AD8003 0.3 NORMALIZED CLOSED-LOOP GAIN (dB) RS = 0Ω RS = 25Ω 0 RS = 50Ω –3 –6 –9 1 10 100 FREQUENCY (MHz) 1000 0 VS = ±5V –0.1 –0.2 –0.3 –0.4 –0.5 –0.6 –0.7 –0.8 –0.
PAGE 9
AD8003 0.20 0.15 SECOND –40 –50 –60 THIRD –70 –90 05721-019 –80 10 12 14 16 18 20 RL (Ω) 22 24 26 28 2.60 VS = ±5V 0.05 2.55 0 2.50 –0.05 2.45 –0.10 2.40 –0.15 2.35 0 Figure 16. Harmonic Distortion vs. RL 4.5 2.0 –1.0 1.5 –1.5 1.0 3 4 5 6 7 8 9 TIME (ns) 4 5 6 7 8 9 TIME (ns) 10 11 12 13 14 15 2.30 0.1 CL = 15pF 0 CL = 0pF –0.1 G = +2 RL = 150Ω VS = ±5V VOUT = 200mV p-p –0.2 0.5 10 11 12 13 14 15 –0.3 05721-012 2 OUTPUT VOLTAGE (V) 3.0 –0.
PAGE 10
AD8003 6000 G = +2 RL = 150Ω 5 RISE FALL VS = ±5V G = +1 VS = ±5V RL = 150Ω INPUT 4 5000 3 AMPLITUDE (V) 3000 VS = +5V 2000 1 0 –1 –2 –3 1000 –4 05721-013 0 1 0 2 3 4 VOUT p-p (V) 5 6 05721-023 SLEW RATE (V/µs) OUTPUT 2 4000 –5 7 0 0.1 1000 G = +2 VS = ±5V RL = 150Ω INPUT × 2 4 0.3 0.4 0.5 0.6 TIME (µs) 0.7 0.8 0.9 1.0 Figure 25. Input Overdrive Recovery Figure 22. Slew Rate vs. Output Voltage 5 0.
PAGE 11
AD8003 80 20 15 60 VS = ±5V VS = +5V 40 VS = +5V VS = ±5V 10 IB (µA) VOS (mV) 5 20 0 0 –5 –20 –10 –60 –5 –4 –3 –2 –1 0 1 2 3 4 –20 –5 5 05721-032 –15 05721-031 –40 –4 –3 –2 –1 VCM (V) 0 1 2 3 5 4 VCM (V) Figure 28. Offset Voltage vs. Input Common-Mode Range Figure 31. Noninverting Input Bias Current vs.
PAGE 12
AD8003 10000 100 100 I– 10 I+ 100 1k 10k 100k 1M 1 10 10M 100 1k 100k 1M 10M Figure 36. Input Current Noise vs. Frequency Figure 34. Input Voltage Noise vs. Frequency 200 1M 0 G = +2 RL = 150Ω –10 DRIVING: CH1 AND CH3 RECEIVING: CH2 –20 180 VS = ±5V 160 100k MAGNITUDE (Ω) VS = +5V –40 –50 –60 120 100 10k 80 60 –70 1k 40 –80 –90 –100 0.
PAGE 13
AD8003 APPLICATIONS INFORMATION GAIN CONFIGURATIONS RGB VIDEO DRIVER Unlike conventional voltage feedback amplifiers, the feedback resistor has a direct impact on the closed-loop bandwidth and stability of the current feedback op amp circuit. Reducing the resistance below the recommended value can make the amplifier response peak and can even become unstable. Increasing the size of the feedback resistor reduces the closed-loop bandwidth.
PAGE 14
AD8003 PRINTED CIRCUIT BOARD LAYOUT Printed circuit board (PCB) layout is usually one of the last steps in the design process and often proves to be one of the most critical. A high performance design can be rendered mediocre due to poor or sloppy layout. Because the AD8003 can operate into the RF frequency spectrum, high frequency board layout considerations must be taken into account. The PCB layout, signal routing, power supply bypassing, and grounding must all be addressed to ensure optimal performance.
PAGE 15
AD8003 Minimizing the trace length and widening the trace from the capacitors to the amplifier reduces the trace inductance. A series inductance with the parallel capacitance can form a tank circuit, which can introduce high frequency ringing at the output. This additional inductance can also contribute to increased distortion due to high frequency compression at the output.
PAGE 16
AD8003 OUTLINE DIMENSIONS 0.60 MAX 4.00 BSC SQ PIN 1 INDICATOR 0.60 MAX TOP VIEW 0.50 BSC 3.75 BSC SQ 0.50 0.40 0.30 1.00 0.85 0.80 0.80 MAX 0.65 TYP 12° MAX 0.30 0.23 0.18 SEATING PLANE PIN 1 INDICATOR 24 1 19 18 2.25 2.10 SQ 1.95 EXPOSED PAD (BOTTOM VIEW) 13 12 7 6 0.25 MIN 2.50 REF 0.05 MAX 0.02 NOM 0.20 REF COPLANARITY 0.08 COMPLIANT TO JEDEC STANDARDS MO-220-VGGD-2 Figure 41.