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AD8335

Description
SPECIALTY CONSUMER CIRCUIT, QCC64
Categorysemiconductor    Other integrated circuit (IC)   
File Size877KB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric Compare View All

AD8335 Overview

SPECIALTY CONSUMER CIRCUIT, QCC64

AD8335 Parametric

Parameter NameAttribute value
Number of functions1
Number of terminals64
Maximum operating temperature85 Cel
Minimum operating temperature-40 Cel
Maximum supply/operating voltage5.5 V
Minimum supply/operating voltage4.5 V
Processing package description9 X 9 MM, LEAD FREE, MO-220-VMMD, LFCSP-64
Lead-freeYes
EU RoHS regulationsYes
China RoHS regulationsYes
stateACTIVE
packaging shapeSQUARE
Package SizeCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
surface mountYes
Terminal formNO LEAD
Terminal spacing0.5000 mm
terminal coatingMATTE TIN
Terminal locationQUAD
Packaging MaterialsUNSPECIFIED
Temperature levelINDUSTRIAL
Consumer IC TypeCONSUMER CIRCUIT
Data Sheet
FEATURES
Low noise preamplifier (PrA)
Voltage noise = 1.3 nV/√Hz typical
Current noise = 2.4 pA/√Hz typical
NF = 7 dB (R
S
= R
IN
= 50 Ω)
Single-ended input; V
IN
maximum = 625 mV p-p
Active input match
Input SNR (noise bandwidth = 20 MHz) = 92 dB
VGA
Differential output
V
OUT
maximum = 5 V p-p, R
L
= 500 Ω differential
Gain range (8 dB output gain step)
−10 dB to +38 dB—low gain mode
−2 dB to +46 dB—high gain mode
Accurate linear-in-dB gain control
PrA + VGA performance
−3 dB bandwidth of 85 MHz
Excellent overload performance
Supply: 5 V
Power consumption
95 mW/channel (380 mW total)
65 mW/channel (PrA off; 260 mW total)
Power-down
Quad Low Noise, Low Cost
Variable Gain Amplifier
AD8335
FUNCTIONAL BLOCK DIAGRAM
VCM1
PON1
POP1
EN12
SP12
HL12
VIN1
VIP1
PIP1
18dB
PMD1
POP2
PMD2
18dB
PIP2
PON2
VCM2
VIP2
VIN2
VMD2
VMD1
VOH1
ATTEN
–48dB TO
0dB
20dB
TO
28dB
VOL1
INTERPOLATOR
GAIN INT
VGN1
SL12
INTERPOLATOR
GAIN INT
VGN2
VOL2
ATTEN
–48dB TO
0dB
20dB
TO
28dB
AD8335
VIN3
VIP3
VCM3
PON3
PIP3
18dB
PMD3
POP3
PMD4
18dB
INTERPOLATOR
GAIN INT
VMD3
VOH2
VOH3
ATTEN
–48dB TO
0dB
20dB
TO
28dB
VOL3
INTERPOLATOR
GAIN INT
VGN3
SL34
VGN4
VOL4
APPLICATIONS
Medical imaging (ultrasound, gamma cameras)
Sonar
Test and measurement
Precise, stable wideband gain control
VMD4
PIP4
ATTEN
–48dB TO
0dB
20dB
TO
28dB
VOH4
Figure 1.
GENERAL DESCRIPTION
The
AD8335
is a quad variable gain amplifier (VGA) with
low noise preamplifier intended for cost and power sensitive
applications. Each channel features a gain range of 48 dB, fully
differential signal paths, active input preamplifier matching,
and user-selectable maximum gains of 46 dB and 38 dB.
Individual gain controls are provided for each channel.
The preamplifier (PrA) has a single-ended to differential gain of
×8 (18.06 dB) and accepts input signals ≤625 mV p-p. PrA noise is
1.2 nV/√Hz and the combined input referred voltage noise of
the PrA and VGA is 1.3 nV/√Hz at maximum gain.
Assuming a 20 MHz noise bandwidth (NBW), the Nyquist
frequency for a 40 MHz ADC, the input SNR is 92 dB. The
HLxx pin optimizes the output SNR for 10-bit and 12-bit
ADCs with 1 V p-p or 2 V p-p full-scale (FS) inputs.
Channel 1 and Channel 2 are enabled through the EN12 pin, and
Channel 3 and Channel 4 are enabled through the EN34 pin.
For VGA only applications, the PrAs can be powered down,
significantly reducing power consumption.
The
AD8335
is available in a 64-lead lead frame chip scale
package (9 mm × 9 mm) for the industrial temperature range
of −40°C to +85°C.
Rev. B
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2004–2012 Analog Devices, Inc. All rights reserved.
04976-001
POP4
PON4
VIP4
SP34
VIN4
VCM4
EN34
HL34

AD8335 Related Products

AD8335 AD8335-EVAL
Description SPECIALTY CONSUMER CIRCUIT, QCC64 SPECIALTY CONSUMER CIRCUIT, QCC64
Number of functions 1 1
Number of terminals 64 64
Maximum operating temperature 85 Cel 85 Cel
Minimum operating temperature -40 Cel -40 Cel
Maximum supply/operating voltage 5.5 V 5.5 V
Minimum supply/operating voltage 4.5 V 4.5 V
Processing package description 9 X 9 MM, LEAD FREE, MO-220-VMMD, LFCSP-64 9 X 9 MM, LEAD FREE, MO-220-VMMD, LFCSP-64
Lead-free Yes Yes
EU RoHS regulations Yes Yes
China RoHS regulations Yes Yes
state ACTIVE ACTIVE
packaging shape SQUARE SQUARE
Package Size CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
surface mount Yes Yes
Terminal form NO LEAD NO LEAD
Terminal spacing 0.5000 mm 0.5000 mm
terminal coating MATTE TIN MATTE TIN
Terminal location QUAD QUAD
Packaging Materials UNSPECIFIED UNSPECIFIED
Temperature level INDUSTRIAL INDUSTRIAL
Consumer IC Type CONSUMER CIRCUIT CONSUMER CIRCUIT
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