Datasheet

ManualsBrandsANALOG DEVICES ManualsLinear ICsLinear IC - Op-amp Current feedback SOIC 8

REV. B

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AD8010

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700 World Wide Web Site: http://www.analog.com

Fax: 781/326-8703 © Analog Devices, Inc., 2000

200 mA Output Current

High-Speed Amplifier

CONNECTION DIAGRAMS

8-Lead DIP and SOIC

NC = NO CONNECT

–IN

+IN

OUT

NC–V

AD8010

16-Lead Wide Body SOIC

NC = NO CONNECT

–IN

+IN

OUT

–V

AD8010

+5V

–5V

75

OUT1

OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

OUT8

75

AD8010

Figure 1. Video Distribution Amplifier

PRODUCT DESCRIPTION

The AD8010 is a low power, high current amplifier capable of

delivering a minimum load drive of 175 mA. Signal performance

such as 0.02% and 0.03° differential gain and phase error is

maintained while driving eight 75 Ω back terminated video lines.

The current feedback amplifier features gain flatness to 60 MHz

and –3 dB (G = +1) signal bandwidth of 230 MHz and only

requires a typical of 15.5 mA supply current from ±5 V supplies.

These features make the AD8010 an ideal component for Video

Distribution Amplifiers or as the drive amplifier within high data

rate Digital Subscriber Line (VDSL and xDSL) systems.

The AD8010 is an ideal component choice for any application

that needs a driver that will maintain signal quality when driving

low impedance loads.

The AD8010 is offered in three package options: an 8-lead DIP,

16-lead wide body SOIC and a low thermal resistance 8-lead

SOIC, and operates over the industrial temperature range of

–40°C to +85°C.

FEATURES

200 mA of Output Current

9  Load

SFDR –54 dBc @ 1 MHz

Differential Gain Error 0.04%, f = 4.43 MHz

Differential Phase Error 0.06, f = 4.43 MHz

Maintains Video Specifications Driving Eight Parallel

75  Loads

0.02% Differential Gain

0.03 Differential Phase

0.1 dB Gain Flatness to 60 MHz

THD –72 dBc @ 1 MHz, R

= 18.75 

IP3 42 dBm @ 5 MHz, R

= 18.75 

1 dB Gain Compression 21 dBm @ 5 MHz, R

= 100 

230 MHz –3 dB Bandwidth, G = +1, R

= 18.75 

800 V/s Slew Rate, R

= 18.75 

25 ns Settling Time to 0.1%

Available in 8-Lead DIP, 16-Lead Wide Body SOIC and

Thermally Enhanced 8-Lead SOIC

APPLICATIONS

Video Distribution Amplifier

VDSL, xDSL Line Driver

Communications

ATE

Instrumentation

Summary of content (12 pages)

PAGE 1
a 200 mA Output Current High-Speed Amplifier AD8010 FEATURES 200 mA of Output Current 9 Load SFDR –54 dBc @ 1 MHz Differential Gain Error 0.04%, f = 4.43 MHz Differential Phase Error 0.06 , f = 4.43 MHz Maintains Video Specifications Driving Eight Parallel 75 Loads 0.02% Differential Gain 0.03 Differential Phase 0.1 dB Gain Flatness to 60 MHz THD –72 dBc @ 1 MHz, RL = 18.75 IP3 42 dBm @ 5 MHz, RL = 18.75 1 dB Gain Compression 21 dBm @ 5 MHz, RL = 100 230 MHz –3 dB Bandwidth, G = +1, RL = 18.
PAGE 2
AD8010–SPECIFICATIONS (@ 25 C, VS = 5 V, G = +2, RL = 18.75 , RS+ = 150 , RF = RG = 604 (R-16), RF = RG = 562 (N-8), RF = RG = 499 (R-8). TMIN = –40 C, TMAX = +85 C unless otherwise noted) Model DYNAMIC PERFORMANCE –3 dB Bandwidth 0.
PAGE 3
AD8010 ABSOLUTE MAXIMUM RATINGS 1 MAXIMUM POWER DISSIPATION Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.6 V Internal Power Dissipation2 Plastic Package (N) . . . . . . Observe Power Derating Curves Small Outline Package (R) . Observe Power Derating Curves Wide Body SOIC (R-16) . . . Observe Power Derating Curves Input Voltage (Common-Mode) . . . . . . . . . . . . . . . . . . . ± VS Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . ± 1.
PAGE 4
60 dG PERCENTAGE OF UNITS 50 DIFFERENTIAL GAIN – % SAMPLE SIZE = 300 G = +2 f = 4.43MHz (PAL) RL = 18.75 40 dG 30 DIFFERENTIAL GAIN dG IN % DIFFERENTIAL PHASE d IN Degrees d d d 20 dG d 10 dG d d 0.05 0.10 0.04 0.08 DIFFERENTIAL GAIN DIFFERENTIAL PHASE 0.02 0.04 0.01 0.02 d d d d d 0 0 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.
PAGE 5
AD8010 0 5 4dBm 4dBm G = +2 RL = 18.75 fO = 5MHz f = 10kHz –15 –25 –35 –45 –55 –65 GAIN = 6.6 RF –20 –69dBm RG –30 –40 50 50 150 50 –50 500kHz TONE SPACING FROM 500kHz TO 5.5MHz WITH 4 MISSING TONES –60 –70 –69dBm –75 –80 –85 –90 4.965 4.985 5.0 5.015 FREQUENCY – MHz 5.035 0 FREQUENCY = 5MHz G = +2 RL = AS SHOWN (SEE SCHEMATIC) HARMONIC DISTORTION – dBc RL = 18.
PAGE 6
AD8010 0 –10 –10 –20 –20 –30 CMRR – dB PSRR – dB –30 –40 –50 –PSRR –40 –50 –60 –70 –60 +PSRR –80 –70 –90 –80 0.03 0.1 1 10 100 –100 0.1 500 1 FREQUENCY – MHz Figure 15. PSRR vs. Frequency 10 FREQUENCY – MHz 100 500 Figure 18. CMRR vs. Frequency 0 316 G = +2 100 31 10 3.1 1 0.31 45 100 PHASE 90 31.6 135 10 TRANSRESISTANCE 3.16 180 1 225 PHASE – Degrees TRANSRESISTANCE – k CLOSED-LOOP OUTPUT RESISTANCE – 1000 310 0.1 0.031 0.1 1 10 FREQUENCY – MHz 100 0.
PAGE 7
AD8010 5 G = +1 RL = 18.75 VO = 0.2V p-p 0.2 3 0.1 2 0.05 1 VOLTS VOLTS 0.15 G = +1 RL = 18.75 VO = 4V p-p 4 0 –0.05 0 –1 –0.1 –2 –0.15 –3 –4 –0.2 50mV 20ns 1V 20ns –5 Figure 21. Small-Signal Pulse Response; G = +1 G = +2, –1 RL = 18.75 VO = 0.2V p-p 0.2 0.15 3 0.1 2 0.05 1 0 –1 –0.1 –2 –0.15 –3 –4 1V 20ns 50mV Figure 22.
PAGE 8
AD8010 Driving Capacitance Loads G = +6 RF = 604 RL = 18.75 VOLTS INPUT The AD8010 was designed primarily to drive nonreactive loads. If driving loads with a capacitive component is desired, best frequency response is obtained by the addition of a small series resistance as shown in Figure 28. The inset figure shows the optimum value for RSERIES vs. capacitive load.
PAGE 9
AD8010 The bypassing scheme that is used for the AD8010 requires special attention. It was found that the conventional technique of bypassing each power pin individually to ground can have an adverse effect on the differential phase error of the circuit. The cause of this is attributed to the fact that there is an internal compensation capacitor in the AD8010 that is referenced to the negative supply.
PAGE 10
AD8010 Differential Line Driver In the circuit in Figure 31 the A device is configured as a gainof-two follower, while the B device is a gain-of-two inverter. These will produce a differential output signal whose maximum value is twice the peak-to-peak value of the maximum output of one device. For this circuit a 12 V peak-to-peak output can be obtained. Twisted pair transmission lines are more often being used for high frequency analog and digital signals.
PAGE 11
AD8010 Closed-Loop Gain and Bandwidth Table I. –3 dB Bandwidth and Slew Rate vs. Closed-Loop Gain and Resistor Values The AD8010 is a current feedback amplifier optimized for use in high performance video and data acquisition applications. Since it uses a current feedback architecture, its closed-loop –3 dB bandwidth is dependent on the magnitude of the feedback resistor.
PAGE 12
AD8010 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead Plastic Mini-DIP (N-8) 8 5 1 C01047a–0–12/00 (rev. B) 0.430 (10.92) 0.348 (8.84) 0.280 (7.11) 0.240 (6.10) 4 0.060 (1.52) 0.015 (0.38) PIN 1 0.210 (5.33) MAX 0.160 (4.06) 0.115 (2.93) 0.325 (8.25) 0.300 (7.62) 0.195 (4.95) 0.115 (2.93) 0.130 (3.30) MIN 0.022 (0.558) 0.100 0.070 (1.77) SEATING PLANE 0.014 (0.356) (2.54) 0.045 (1.15) BSC 0.015 (0.381) 0.008 (0.204) 8-Lead SOIC (SO-8) 0.1968 (5.00) 0.1890 (4.80) 0.1574 (4.