AD8336ACPZ-RL Analog Devices Inc, AD8336ACPZ-RL Datasheet

IC,Voltage Controlled Gain Amplifier,SINGLE,BIPOLAR,LLCC,16PIN,PLASTIC

AD8336ACPZ-RL

Manufacturer Part Number
AD8336ACPZ-RL
Description
IC,Voltage Controlled Gain Amplifier,SINGLE,BIPOLAR,LLCC,16PIN,PLASTIC
Manufacturer
Analog Devices Inc
Series
X-AMP®r
Type
Variable Gain Amplifierr
Datasheet

Specifications of AD8336ACPZ-RL

Applications
Signal Processing
Mounting Type
Surface Mount
Package / Case
16-LFCSP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AD8336-EVALZ - BOARD EVALUATION FOR AD8336
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
Low noise
Small-signal BW: 115 MHz
Large-signal BW: 2 V p-p = 80 MHz
Slew rate: 550 V/μs, 2 V p-p
Gain ranges (specified)
Gain scaling: 50 dB/V
DC-coupled
Single-ended input and output
Supplies: ±3 V to ±12 V
Temperature range: −55°C to +125°C
Power
APPLICATIONS
Industrial process controls
High performance AGC systems
I/Q signal processing
Video
Industrial and medical ultrasound
Radar receivers
GENERAL DESCRIPTION
The AD8336 is a low noise, single-ended, linear-in-dB, general-
purpose variable gain amplifier, usable over a large range of
supply voltages. It features an uncommitted preamplifier
(preamp) with a usable gain range of 6 dB to 26 dB established
by external resistors in the classical manner. The VGA gain
range is 0 dB to 60 dB, and its absolute gain limits are −26 dB to
+34 dB. When the preamplifier gain is adjusted for 12 dB, the
combined 3 dB bandwidth of the preamp and VGA is 100 MHz,
and the amplifier is fully usable to 80 MHz. With ±5 V supplies,
the maximum output swing is 7 V p-p.
Thanks to its X-Amp® architecture, excellent bandwidth
uniformity is maintained across the entire gain range of the
VGA. Intended for a broad spectrum of applications, the
differential gain control interface provides precise linear-in-dB
gain scaling of 50 dB/V over the temperature span of −55°C to
+125 °C. The differential gain control is easy to interface with a
variety of external circuits within the common-mode voltage
limits of the AD8336.
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.
Voltage noise: 3 nV/√Hz
Current noise: 3 pA/√Hz
−14 dB to +46 dB
0 dB to 60 dB
150 mW @ ±3 V, −55°C < T < +125°C
84 mW @ ±3 V, PWRA = 3 V
General-Purpose, −55°C to +125°C,
Wide Bandwidth, DC-Coupled VGA
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
PWRA
The large supply voltage range makes the AD8336 particularly
suited for industrial medical applications and for video circuits.
Dual-supply operation enables bipolar input signals, such as
those generated by photodiodes or photomultiplier tubes.
The fully independent voltage feedback preamp allows both
inverting and noninverting gain topologies, making it a fully
bipolar VGA. The AD8336 can be used within the specified
gain range of −14 dB to +60 dB by selecting a preamp gain
between 6 dB and 26 dB and choosing appropriate feedback
resistors. For the nominal preamp gain of 4×, the overall gain
range is −14 dB to +46 dB.
In critical applications, the quiescent power can be reduced by
about half by using the power adjust pin, PWRA. This is
especially useful when operating with high supply voltages of
up to ±12 V, or at high temperatures.
The operating temperature range is −55°C to +125°C. The
AD8336 is available in a 16-lead LFCSP (4 mm × 4 mm).
INPP
INPN
4
5
2
AD8336
+
PrA
VNEG
FUNCTIONAL BLOCK DIAGRAM
10
PRAO
BIAS
©2006–2008 Analog Devices, Inc. All rights reserved.
8
VPOS
13
VGAI
9
Figure 1.
ATTENUATOR
–60dB TO 0dB
VCOM
3
GPOS
GAIN CONTROL
11
INTERFACE
34dB
AD8336
GNEG
www.analog.com
12
1
VOUT

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AD8336ACPZ-RL Summary of contents

Page 1

FEATURES Low noise Voltage noise: 3 nV/√Hz Current noise: 3 pA/√Hz Small-signal BW: 115 MHz Large-signal BW p MHz Slew rate: 550 V/μ p-p Gain ranges (specified) − + ...

Page 2

AD8336 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 5 ESD Caution .................................................................................. 5 Pin Configuration and Function Descriptions ...

Page 3

SPECIFICATIONS V = ± 25°C, gain range = − +46 dB, preamp gain = 4× MHz otherwise specified. Table 1. Parameter PREAMPLIFIER −3 dB Small-Signal Bandwidth −3 dB Large-Signal Bandwidth ...

Page 4

AD8336 Parameter 2 ABSOLUTE GAIN ERROR GAIN CONTROL INTERFACE Gain Scaling Factor Intercept Gain Range Input Voltage (V ) Range GAIN Input Current Response Time OUTPUT PERFORMANCE Output Impedance MHz Output Signal Swing Output Current Short-Circuit Current ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage (VPOS, VNEG) Input Voltage (INPP, INPN) Gain Voltage (GPOS, GNEG) PWRA Power Dissipation V ≤ ± ±5 V < V ≤ ± Operating Temperature Range ±3 V < ...

Page 6

AD8336 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1 VOUT Output Voltage. 2 PWRA Power Control. Normal power when grounded; power reduced by half if PWRA is pulled high. 3 VCOM Common-Mode Voltage. ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS V = ± 25°C, gain range = − +46 dB, PrA gain = +4× MHz specified +125° +25° –55°C 40 ...

Page 8

AD8336 2.0 PREAMP GAIN = 4× 1MHz PREAMP GAIN = 4× 10MHz 1.5 PREAMP GAIN = 20× 1MHz PREAMP GAIN = 20× 10MHz 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 –800 –600 ...

Page 9

V = ±12V S –180 V = ± ±3V S –200 –0.8 –0.6 –0.4 –0.2 0 0.2 0.4 V (V) GAIN Figure 15. Output Offset Voltage vs. ...

Page 10

AD8336 +0.7V GAIN +0. +0. –0.2V 0 –0.5V –10 –0.7V –20 PREAMP GAIN = –3× –30 100k 1M 10M FREQUENCY (Hz) Figure 21. Frequency Response for Various Values of V When the ...

Page 11

V = ±12V ± ±3V S 0.01 100k 1M 10M FREQUENCY (Hz) Figure 27. Output Resistance vs. Frequency of the VGA for Three Values of Supply Voltage (V (See ...

Page 12

AD8336 100 V = 0.7V GAIN 10 INPUT-REFERRED NOISE R THERMAL NOISE ALONE 1 S 0.1 10 100 SOURCE RESISTANCE (Ω) Figure 33. Input-Referred Noise vs. Source Resistance (See Figure 72 SIMULATED DATA ...

Page 13

HD3 OUTPUT SWING OF PREAMP LIMITS f = 5MHz MINIMUM USABLE V GAIN –30 –40 –50 – 0.5V p-p OUT – p-p OUT p-p OUT p-p OUT –80 ...

Page 14

AD8336 0 0.7V GAIN 0.4 0.2 0 –0.2 –0.4 INPUT OUTPUT WHEN PWRA = 0 OUTPUT WHEN PWRA = 1 –0.6 –100 – 100 150 200 TIME (ns) Figure 45. Noninverting Small-Signal Pulse Response for Both ...

Page 15

V = 0.7V GAIN V = ±12V INPUT C = 0pF L – 10pF 22pF 47pF* L –20 *WITH 20Ω RESISTOR IN SERIES WITH OUTPUT –30 –100 ...

Page 16

AD8336 TEST CIRCUITS NETWORK ANALYZER OUT IN 50Ω 50Ω AD8336 4 + PrA – 49.9Ω 301Ω 100Ω Figure 56. Gain vs. V and Gain Error vs. V GAIN NETWORK ANALYZER OUT IN 50Ω 50Ω AD8336 ...

Page 17

SPECTRUM ANALYZER IN 50Ω AD8336 + 4 PrA 1 – 301Ω V GAIN 100Ω Figure 62. Input-Referred Noise and Output-Referred Noise NOISE FIGURE METER NOISE SOURCE INPUT DRIVE NOISE SOURCE AD8336 + 4 0Ω 49.9Ω ...

Page 18

AD8336 AD8336 4 + PrA 5 – 301Ω 100Ω Figure 68. Supply Current NETWORK ANALYZER OUT 50Ω 50Ω AD8336 4 + PrA 100Ω – 5 100Ω 49.9Ω 301Ω Figure 69. Frequency Response, Inverting Gain OSCILLOSCOPE ...

Page 19

SIGNAL GENERATOR OUT 50Ω 22dB AD8336 4 + PrA 49.9Ω – 301Ω 100Ω Figure 74. IP1dB vs. V SIGNAL GENERATOR OUT 50Ω AD8336 AMPLIFIER + 4 PrA 1 49.9Ω – 301Ω 0.7V ...

Page 20

AD8336 THEORY OF OPERATION OVERVIEW The AD8336 is the first VGA designed for operation over exceptionally broad ranges of temperature and supply voltage. Its performance has been characterized from temperatures extending from −55°C to +125°C, and supply voltages from ±3 ...

Page 21

SETTING THE GAIN The overall gain of the AD8336 is the sum (in decibels) or the product (magnitude) of the preamp gain and the VGA gain. The preamp gain is calculated as with any op amp, as seen in the ...

Page 22

AD8336 APPLICATIONS INFORMATION AMPLIFIER CONFIGURATION The AD8336 amplifiers can be configured in various options. In addition to the 60 dB gain range variable gain stage, an uncommitted voltage gain amplifier is available to the user as a preamplifier. The preamplifier ...

Page 23

Circuit Configuration for Inverting Gain The preamplifier can also be used in an inverting configuration, as shown in Figure 81. AD8336 PREAMPLIFIER INPP 4 + –60dB TO 0dB GAIN = 9.6dB INPN – FB1 FB2 100Ω 301Ω ...

Page 24

AD8336 EVALUATION BOARD An evaluation board, AD8336-EVALZ, is available online for the AD8336. Figure photo of the board. The board is shipped from the factory configured for a preamp gain of 4×. To change the value of ...

Page 25

Figure 84. Component Side Copper Figure 85. Secondary Side Copper Figure 86. Component Side Silk Screen Figure 87. Internal Ground Plane Copper Figure 88. Internal Power Plane Copper Rev Page AD8336 ...

Page 26

... GAIN– C6 R17 1nF 0Ω GPOS R14 GAIN+ C7 1nF R13 C5 L1 VNEG 120nH C2 R11 10µF + 0Ω 25V R12 0Ω PRVG Mfg. Part Number F931E106MCC C0603C104K4RSCTU ECJ-1VB2A102K DFLZ5V1 to DFLZ5V7 901-143-6RFX TP-104-01-00 TP-104-01-07 BLM18BA750SN1D ERJ-2GE0R00X ERJ-3EKF49R9V ERJ-3EKF1000V ERJ-3EKF3010V ERJ-3EKF4991V TP-104-01-05 TP-104-01-02 22-10-2031 AD8336ACPZ SJ67A11 ...

Page 27

... OUTLINE DIMENSIONS PIN 1 INDICATOR 12° MAX 1.00 0.85 0.80 ORDERING GUIDE Model Temperature Range 1 AD8336ACPZ-R7 −40°C to +85°C AD8336ACPZ-RL 1 −40°C to +85°C 1 AD8336ACPZ-WP −40°C to +85°C 1 AD8336-EVALZ RoHS Compliant Part. 4.00 BSC SQ 0.60 MAX 0.65 BSC TOP 3.75 ...

Page 28

AD8336 NOTES ©2006–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06228-0-9/08(A) Rev Page ...

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