AD815ARB-24Z-REEL Analog Devices Inc, AD815ARB-24Z-REEL Datasheet

AD815ARB-24Z-REEL

Manufacturer Part Number
AD815ARB-24Z-REEL
Description
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD815ARB-24Z-REEL

Power Supply Requirement
Dual
Slew Rate
900V/us
Pin Count
24
Lead Free Status / RoHS Status
Compliant
a
GENERAL DESCRIPTION
The AD815 consists of two high speed amplifiers capable of
supplying a minimum of 500 mA. They are typically configured
as a differential driver enabling an output signal of 40 V p-p on
± 15 V supplies. This can be increased further with the use of a
coupling transformer with a greater than 1:1 turns ratio. The
low harmonic distortion of –66 dB @ 1 MHz into 200 Ω
REV. C
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. Trademarks and
registered trademarks are the property of their respective owners.
FEATURES
Flexible Configuration
Industrial Temperature Range
High Output Power
Low Distortion
High Speed
Thermal Shutdown
APPLICATIONS
ADSL, HDSL, and VDSL Line Interface Driver
Coil or Transformer Driver
CRT Convergence and Astigmatism Adjustment
Video Distribution Amp
Twisted Pair Cable Driver
Thermally Enhanced SOIC
Differential Input and Output Driver
or Two Single-Ended Drivers
–66 dB @ 1 MHz THD, R
0.05% and 0.45 Differential Gain and Phase, R
120 MHz Bandwidth (–3 dB)
900 V/ s Differential Slew Rate
70 ns Settling Time to 0.1%
Figure 1. Total Harmonic Distortion vs. Frequency
400 mA Minimum Output Drive/Amp, R
(6 Back-Terminated Video Loads)
–100
–110
–40
–50
–60
–70
–80
–90
100
R
(DIFFERENTIAL)
V
G = +10
V
S
OUT
L
=
= 50
= 40V p-p
1k
15V
FREQUENCY – Hz
10k
L
= 200
100k
R
(DIFFERENTIAL)
L
, V
= 200
OUT
1M
= 40 V p-p
L
= 10
L
10M
= 25
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/461-3113
combined with the wide bandwidth and high current drive make
the differential driver ideal for communication applications such
as subscriber line interfaces for ADSL, HDSL and VDSL.
The AD815 differential slew rate of 900 V/µs and high load drive
are suitable for fast dynamic control of coils or transformers,
and the video performance of 0.05% and 0.45° differential gain
and phase into a load of 25 Ω enable up to 12 back-terminated
loads to be driven.
The 24-lead SOIC (RB) is capable of driving 26 dBm for full
rate ADSL with proper heat sinking.
V
4Vp-p
IN
=
100
100
Figure 2. Subscriber Line Differential Driver
*HEAT TABS ARE CONNECTED TO THE POSITIVE SUPPLY.
110
HEAT TABS
FUNCTIONAL BLOCK DIAGRAM
THERMAL
AMP2
AMP1
+V
+15V
–15V
G = +10
OUT1
S
499
+IN1
–IN1
499
*
© 2005 Analog Devices, Inc. All rights reserved.
–V
NC
NC
NC
NC
AD815
S
AD815
1/2
High Output Current
1/2
10
11
12
NC = NO CONNECT
1
2
3
4
5
6
7
8
9
(Not to Scale)
TOP VIEW
Differential Driver
AD815
V
40Vp-p
D
=
R
R
1
2
= 15
= 15
19
18
17
16
15
14
13
TRANSFORMER
24
23
22
21
20
NC
NC
NC
NC
+IN2
–IN2
OUT2
+V
S
THERMAL
HEAT TABS
+V
1:2
S
*
AD815
www.analog.com
R
120
L
V
40Vp-p
OUT
=

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AD815ARB-24Z-REEL Summary of contents

Page 1

FEATURES Flexible Configuration Differential Input and Output Driver or Two Single-Ended Drivers Industrial Temperature Range High Output Power Thermally Enhanced SOIC 400 mA Minimum Output Drive/Amp, R Low Distortion – MHz THD 200 L ...

Page 2

AD815–SPECIFICATIONS Model DYNAMIC PERFORMANCE Small Signal Bandwidth (–3 dB) Bandwidth (0.1 dB) Differential Slew Rate Settling Time to 0.1% NOISE/HARMONIC PERFORMANCE Total Harmonic Distortion Input Voltage Noise Input Current Noise (+ Input Current Noise (– Differential ...

Page 3

... Figure 3. Plot of Maximum Power Dissipation vs. Temperature ORDERING GUIDE Package Description 24-Lead Thermally Enhanced SOIC 24-Lead Thermally Enhanced SOIC –3– AD815 T = 150 C J θ C/W JA (STILL AIR = 0 FT/MIN) AD815ARB-24 NO HEAT SINK –40 –30 –20 – AMBIENT TEMPERATURE – C Package RB-24 RB-24 WARNING! ESD SENSITIVE DEVICE 90 ...

Page 4

AD815 –Typical Performance Characteristics SUPPLY VOLTAGE – Figure 4. Input Common-Mode Voltage Range vs. Supply Voltage LOAD (SINGLE-ENDED SUPPLY ...

Page 5

V = 15V S –12 –14 –40 – JUNCTION TEMPERATURE – C Figure 10. Input Offset Voltage vs. Temperature 750 700 SOURCE 650 600 SINK 550 500 450 –60 –40 –20 ...

Page 6

AD815 100 INVERTING INPUT CURRENT NOISE 10 NONINVERTING INPUT CURRENT NOISE INPUT VOLTAGE NOISE 1 10 100 1k FREQUENCY – Hz Figure 16. Input Current and Voltage Noise vs. Frequency SIDE 562 562 40 ...

Page 7

G = +10 600 500 400 300 200 100 OUTPUT STEP SIZE – V p-p Figure 22. Slew Rate vs. Output Step Size –85 SIDE B –80 SIDE A –75 –70 SIDE A SIDE ...

Page 8

AD815 6 BACK TERMINATED LOADS (25 ) 0.04 0.03 0.02 PHASE 0.01 0.00 –0.01 –0.02 GAIN –0.03 –0. BACK TERMINATED LOADS (75 ) 0.010 0.005 PHASE 0.000 GAIN –0.005 –0.010 –0.015 GAIN ...

Page 9

F 8 1/2 AD815 100 PULSE GENERATOR –15V 250ps R F Figure 34. Test Circuit, Gain = +1 SIDE A SIDE B 100mV Figure 35. 500 mV Step ...

Page 10

AD815 SIDE A SIDE B 1V Figure 42 Step Response –1 THEORY OF OPERATION The AD815 is a dual current feedback amplifier with high (500 mA) output current capability. Being a current feedback amplifier, the AD815’s ...

Page 11

DC ERRORS AND NOISE There are three major noise and offset terms to consider in a current feedback amplifier. For offset errors refer to the equation below. For noise error the terms are root-sum-squared to give a net output error. ...

Page 12

AD815 Other Power Considerations There are additional power considerations applicable to the AD815. First, as with many current feedback amplifiers, there is an increase in supply current when delivering a large peak-to-peak voltage to a resistive load at high frequencies. ...

Page 13

F 100 AD826 100 1/2 AD826 7 100 5 4 0.1 F –15V Figure 52. Differential Driver with Single-Ended Differential Converter Another means for creating a ...

Page 14

AD815 ~ 20pF R +15V F 499 0 499 1/2 AMP1 6 AD815 250 499 499 (50 ) (OPTIONAL 499 ...

Page 15

REV. C OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 24-Lead Thermally Enhanced SOIC (RB-24) 0.6141 (15.60) 0.5985 (15.20 PIN 1 0.1043 (2.65) 0.0926 (2.35) 0.0500 0.0201 (0.51) SEATING 0.0125 (0.32) (1.27) ...

Page 16

AD815 Revision History Location 4/05—Data Sheet changed from REV REV. C. Changes to FEATURES . . . . . . . . . . . . . . . . . . . . . . . . ...

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