AD8045ACP-REEL7

Manufacturer Part NumberAD8045ACP-REEL7
DescriptionIC OPAMP VF ULDIST LN 8LFCSP
ManufacturerAnalog Devices Inc
AD8045ACP-REEL7 datasheet
 

Specifications of AD8045ACP-REEL7

Amplifier TypeVoltage FeedbackNumber Of Circuits1
Slew Rate1350 V/µs-3db Bandwidth1GHz
Current - Input Bias2µAVoltage - Input Offset200µV
Current - Supply16mACurrent - Output / Channel70mA
Voltage - Supply, Single/dual (±)3.3 V ~ 12 V, ±1.65 V ~ 6 VOperating Temperature-40°C ~ 125°C
Mounting TypeSurface MountPackage / Case8-LFCSP
Lead Free Status / RoHS StatusContains lead / RoHS non-compliantOutput Type-
Gain Bandwidth Product-  
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FEATURES
Ultralow distortion
SFDR
−101 dBc @ 5 MHz
−90 dBc @ 20 MHz
−63 dBc @ 70 MHz
Third-order intercept
43 dBm @ 10 MHz
Low noise
3 nV/√Hz
3 pA/√Hz
High speed
1 GHz, −3 dB bandwidth (G = +1)
1350 V/µs slew rate
7.5 ns settling time to 0.1%
Standard and low distortion pinout
Supply current: 15 mA
Offset voltage: 1.0 mV max
Wide supply voltage range: 3.3 V to 12 V
GENERAL DESCRIPTION
The AD8045 is a unity gain stable voltage feedback amplifier
with ultralow distortion, low noise, and high slew rate. With a
spurious-free dynamic range of −90 dBc @ 20 MHz, the
AD8045 is an ideal solution in a variety of applications,
including ultrasound, ATE, active filters, and ADC drivers.
ADI’s proprietary next generation XFCB process and innovative
architecture enables such high performance amplifiers.
The AD8045 features a low distortion pinout for the LFCSP,
which improves second harmonic distortion and simplifies the
layout of the circuit board.
The AD8045 has 1 GHz bandwidth, 1350 V/µs slew rate, and
settles to 0.1% in 7.5 ns. With a wide supply voltage range (3.3 V
to 12 V) and low offset voltage (200 µV), the AD8045 is an ideal
candidate for systems that require high dynamic range, preci-
sion, and high speed.
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.
Specifications subject to change without notice. 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.
3 nV/√Hz Ultralow Distortion,
High Speed Op Amp
APPLICATIONS
Instrumentation
IF and baseband amplifiers
Active filters
ADC drivers
DAC buffers
CONNECTION DIAGRAMS
NC
1
8
FEEDBACK
2
7
–IN
3
6
+IN
4
5
Figure 1. 8-Lead AD8045 LFCSP (CP-8)
1
8
FEEDBACK
–IN
2
7
+IN
3
6
–V
4
5
S
Figure 2. 8-Lead AD8045 SOIC/EP (RD-8)
The AD8045 amplifier is available in a 3 mm × 3 mm LFCSP
and the standard 8-lead SOIC. Both packages feature an
exposed paddle that provides a low thermal resistance path to
the PCB. This enables more efficient heat transfer, and increases
reliability. The AD8045 works over the extended industrial
temperature range (−40°C to +125°C).
–20
G = +1
V
= ±5V
–30
S
V
= 2V p-p
OUT
R
= 1kΩ
L
–40
R
= 100Ω
S
–50
–60
–70
–80
HD3 LFCSP
–90
–100
–110
–120
0.1
1
10
FREQUENCY (MHz)
Figure 3. Harmonic Distortion vs. Frequency for Various Packages
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.
AD8045
+V
S
OUTPUT
NC
–V
S
NC
+ V
S
OUTPUT
NC
HD2 LFCSP
100
www.analog.com

AD8045ACP-REEL7 Summary of contents

  • Page 1

    FEATURES Ultralow distortion SFDR −101 dBc @ 5 MHz −90 dBc @ 20 MHz −63 dBc @ 70 MHz Third-order intercept 43 dBm @ 10 MHz Low noise 3 nV/√Hz 3 pA/√Hz High speed 1 GHz, −3 dB bandwidth (G ...

  • Page 2

    AD8045 TABLE OF CONTENTS Specifications with ±5 V Supply ..................................................... 3 Specifications with +5 V Supply ..................................................... 4 Absolute Maximum Ratings............................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 Typical Performance Characteristics ............................................. ...

  • Page 3

    SPECIFICATIONS WITH ±5 V SUPPLY T = 25° + 100 Ω kΩ to ground, unless noted otherwise. Exposed paddle must be floating or connected to − Table 1. Parameter DYNAMIC ...

  • Page 4

    AD8045 SPECIFICATIONS WITH +5 V SUPPLY T = 25° + 100 Ω kΩ to midsupply, unless otherwise noted. Exposed paddle must be floating or connected to − Table 2. Parameter ...

  • Page 5

    ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Rating Supply Voltage 12.6 V Power Dissipation See Figure 4 Common-Mode Input Voltage −V ±V Differential Input Voltage S Exposed Paddle Voltage −V Storage Temperature −65°C to +125°C Operating Temperature Range −40°C to +125°C ...

  • Page 6

    AD8045 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS AD8045 OUTPUT 6 3 BOTTOM VIEW (Not to Scale CONNECT Figure 5. SOIC Pin Configuration Note: The exposed paddle must be ...

  • Page 7

    TYPICAL PERFORMANCE CHARACTERISTICS ± 1kΩ –1 – +10 –3 –4 –5 –6 – FREQUENCY (MHz) Figure 7. Small Signal Frequency Response for Various Gains ...

  • Page 8

    AD8045 –1 –2 –3 – ±2.5V S –5 –6 –7 –8 –9 –10 10 100 FREQUENCY (MHz) Figure 13. Large Signal Frequency Response for Various Supplies –1 –2 –3 – ...

  • Page 9

    ±5V S – p-p OUT R = 100Ω L – 100Ω S –50 –60 –70 HD2 SOIC –80 –90 HD2 LFCSP –100 HD3 SOIC AND LFCSP –110 0.1 1 ...

  • Page 10

    AD8045 – ± 150Ω – 100Ω 10MHz –60 HD2 LFCSP –70 HD2 SOIC –80 –90 –100 HD3 SOIC AND LFCSP –110 ...

  • Page 11

    + 1kΩ – 100Ω 10MHz –60 HD3 SOIC AND LFCSP –70 –80 –90 –100 HD2 LFCSP –110 0.5 1.0 1.5 2.0 OUTPUT VOLTAGE (V p-p) ...

  • Page 12

    AD8045 0.20 18pF 0.15 0.10 0pF 0.05 0 –0.05 –0. –0. ± 1kΩ L –0. TIME (ns) Figure 37. Small Signal Transient Response with Capacitive Load 3 V ...

  • Page 13

    × INPUT ± 5MHz OUTPUT 1 0 –1 –2 –3 –4 –5 – 100 120 140 TIME (ns) Figure 43. Output ...

  • Page 14

    AD8045 1000 ±5V S 100 10 1 0.1 0. FREQUENCY (MHz) Figure 49. Output Impedance vs. Frequency FREQUENCY (MHz) Figure ...

  • Page 15

    I – ±5V –1 –1 ± –2.0 –2.2 I – –2 –2.6 –2.8 –3.0 –40 ...

  • Page 16

    AD8045 CIRCUIT CONFIGURATIONS WIDEBAND OPERATION Figure 61 and Figure 62 show the recommended circuit configurations for noninverting and inverting amplifiers. In unity gain (G = +1) applications, R helps to reduce high S frequency peaking not needed for ...

  • Page 17

    THEORY OF OPERATION The AD8045 is a high speed voltage feedback amplifier fabri- cated on ADI’s second generation eXtra Fast Complementary Bipolar (XFCB) process. An H-bridge input stage is used to attain a 1400 V/µs slew rate and low distortion ...

  • Page 18

    AD8045 OUTPUT NOISE Figure 66 shows the contributors to the noise at the output of a noninverting configuration – Figure 66. ...

  • Page 19

    APPLICATIONS LOW DISTORTION PINOUT The AD8045 LFCSP package features Analog Devices new low distortion pinout. The new pinout provides two advantages over the traditional pinout. First, improved second harmonic distortion performance, which is accomplished by the physical separation of the ...

  • Page 20

    AD8045 0 –20 –40 –60 –80 –100 –120 FREQUENCY (MHz) Figure 69. Single-Tone FFT MHz, Sample Rate = 65 MSPS IN Shown in the First Nyquist Zone 90 MHZ ACTIVE LOW-PASS FILTER ...

  • Page 21

    CH1 50.0mV M4.00ns A CH1 Figure 71. Small Signal Transient Response of 90 MHz LPF R1 R2 249Ω 249Ω INPUT 49.9Ω 7.1pF R4 499Ω 1 0.00V CH1 500mV Figure 72. Large Signal Transient Response of 90 ...

  • Page 22

    AD8045 PRINTED CIRCUIT BOARD LAYOUT Laying out the printed circuit board (PCB) is usually the last step in the design process and often proves to be one of the most critical. A brilliant design can be rendered useless because of ...

  • Page 23

    EXPOSED PADDLE The AD8045 features an exposed paddle, which lowers the thermal resistance by 25% compared to a standard SOIC plastic package. The exposed paddle of the AD8045 is internally con- nected to the negative power supply pin. Therefore, when ...

  • Page 24

    ... AD8045ARD-REEL7 1,000 AD8045ARDZ AD8045ARDZ-REEL 2,500 1 AD8045ARDZ-REEL7 1,000 AD8045ACP-R2 250 AD8045ACP-REEL 5,000 AD8045ACP-REEL7 1,500 1 AD8045ACPZ-R2 250 1 AD8045ACPZ-REEL 5,000 1 AD8045ACPZ-REEL7 1,500 Pb-free part. © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 5.00 (0.197) BOTTOM VIEW 4 ...