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Cirrus Logic

CS3302 Datasheet Preview

CS3302 Datasheet

HIGH-Z PROGRAMMABLE GAIN DIFFERENTIAL AMPLIFIER

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CS3302
High-Z Programmable Gain Differential Amplifier
Features
Description
Signal bandwidth: DC to 2 kHz
Selectable gain: x1, x2, x4, x8, x16, x32, x64
Differential inputs, differential outputs
• Multiplexed inputs: INA, INB, 800termination
• Rough / fine charge outputs for CS5371/72
• Max signal amplitude: 5 Vp-p differential
• Ultra-low input bias: < 1 pA
Excellent noise performance
• 1 µVp-p between 0.1 Hz and 10 Hz
• 8.5 nV/ Hz from 200 Hz to 2 kHz
Low total harmonic distortion
• -118 dB THD typical (0.000126%)
• -112 dB THD maximum (0.000251%)
Low power consumption
• Normal / LPWR / PWDN: 5 mA, 3.3 mA, 10 µA
Single or dual power supply configurations
• VA+ = +5 V; VA- = 0 V; VD = +3.3 V to +5 V
• VA+ = +2.5 V;VA- = -2.5 V;VD = +3.3 V
The CS3302 is a high input impedance differential in, dif-
ferential out amplifier with programmable gain, optimized
for amplifying signals from high impedance sensors such
as hydrophones. The gain settings are binary weighted
(x1, x2, x4, x8, x16, x32, x64) and are selected using
simple pin settings. Two sets of external inputs, INA and
INB, simplify system design as inputs from a sensor and
test DAC. An internal 800termination can also be se-
lected for noise tests.
Amplifier input impedance is very high, requiring less
than 1 pA of input current. Noise performance is very
good at 1 µVp-p between 0.1 Hz and 10 Hz, and a noise
density of 8.5 nV/ Hz over the 200 Hz to 2 kHz band-
width. Distortion performance is also extremely good,
typically -118 dB THD. Low input current, low noise, and
low total harmonic distortion make this amplifier ideal for
high impedance differential sensors requiring maximum
dynamic range.
ORDERING INFORMATION
CS3302-IS -40ºC to +85ºC 24-pin SSOP
VA+
GUARD
VD
INA+
INB+
MUX0
MUX1
+ 570500
OUTR+
- OUTF+
57050
GAIN0
GAIN1
GAIN2
INA-
INB-
570500
- OUTF-
OUTR-
+ 57050
VA- LPWR PWDN DGND
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Cirrus Logic, Inc.
www.cirrus.com
Copyright Cirrus Logic, Inc. 2003
(All Rights Reserved)
JUN ‘03
DS596PP2
1




Cirrus Logic

CS3302 Datasheet Preview

CS3302 Datasheet

HIGH-Z PROGRAMMABLE GAIN DIFFERENTIAL AMPLIFIER

No Preview Available !

CS3302
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS........................................................................ 4
SPECIFIED OPERATING CONDITIONS ................................................................................ 4
ABSOLUTE MAXIMUM RATINGS .......................................................................................... 4
THERMAL CHARACTERISTICS ............................................................................................. 5
ANALOG CHARACTERISTICS ............................................................................................... 5
DIGITAL CHARACTERISTICS ................................................................................................ 8
POWER SUPPLY CHARACTERISTICS ................................................................................. 9
2. GENERAL DESCRIPTION..................................................................................................... 10
2.1. Analog Signals .............................................................................................................. 10
2.2.1.Analog Inputs ....................................................................................................... 10
2.3.2.Analog Outputs..................................................................................................... 10
2.4.3.Differential Signals ............................................................................................... 11
2.5.4.Guard Output........................................................................................................ 11
2.6. Digital Signals................................................................................................................ 11
2.7.1.Gain Selection ...................................................................................................... 11
2.8.2.Mux Selection ....................................................................................................... 11
2.9.3.Low Power Selection ............................................................................................ 11
2.10.4.Power Down Selection ....................................................................................... 11
2.11. Power Supplies ............................................................................................................. 11
2.12.1.Analog Power Supplies ...................................................................................... 11
2.13.2.Digital Power Supplies ....................................................................................... 12
2.14. Connection Diagram...................................................................................................... 13
3. PIN DESCRIPTION ................................................................................................................ 14
4. PACKAGE DIMENSIONS ...................................................................................................... 15
Contacting Cirrus Logic Support
For all product questions and inquiries contact a Cirrus Logic Sales Representative.
To find one nearest you go to www.cirrus.com
IMPORTANT NOTICE
“Preliminary” product information describes products that are in production, but for which full characterization data is not yet available. Cirrus Logic, Inc. and its
subsidiaries (“Cirrus”) believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice
and is provided “AS IS” without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before
placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order
acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. No responsibility is assumed by Cirrus for the use of this
information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This
document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights,
trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for
copies to be made of the information only for use within your organization with respect to Cirrus integrated circuits or other products of Cirrus. This consent does
not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. An export permit needs
to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under
the “Foreign Exchange and Foreign Trade Law” is to be exported or taken out of Japan. An export license and/or quota needs to be obtained from the competent
authorities of the Chinese Government if any of the products or technologies described in this material is subject to the PRC Foreign Trade Law and is to be exported
or taken out of the PRC.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROP-
ERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR
USE IN AIRCRAFT SYSTEMS, MILITARY APPLICATIONS, PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, LIFE SUPPORT PRODUCTS OR OTHER
CRITICAL APPLICATIONS (INCLUDING MEDICAL DEVICES, AIRCRAFT SYSTEMS OR COMPONENTS AND PERSONAL OR AUTOMOTIVE SAFETY OR SE-
CURITY DEVICES). INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK AND CIR-
RUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR
CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO
FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUD-
ING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES.
Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks
or service marks of their respective owners.
2


Part Number CS3302
Description HIGH-Z PROGRAMMABLE GAIN DIFFERENTIAL AMPLIFIER
Maker Cirrus Logic
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CS3302 Datasheet PDF






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