CDB5376 Cirrus Logic Inc, CDB5376 Datasheet

EVALUATION BOARD FOR CS5376

CDB5376

Manufacturer Part Number
CDB5376
Description
EVALUATION BOARD FOR CS5376
Manufacturer
Cirrus Logic Inc
Datasheets

Specifications of CDB5376

Main Purpose
Seismic Evaluation System
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
CS3301A, CS3302A, CS4373A, CS5372A, CS5376A
Primary Attributes
Quad Digital Filter
Secondary Attributes
Graphical User Interface, SPI™ & USB Interfaces
Processor To Be Evaluated
CS330x, CS4373A, CS537x
Interface Type
USB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Other names
598-1778
Preliminary Product Information
Features
Signal Bandwidth:
Selectable Gain:
Differential Inputs, Differential Outputs
• Multiplexed inputs: INA, INB, 800Ω termination
• Rough / fine charge outputs for CS5371A / 72A / 73A
• Max signal amplitude: 5 V
• Ultra-low input bias: < 1 pA
Excellent Noise Performance
• 1 µV
• 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 operation: 5 mA
• Power down: 10 µA
Dual Power Supply Configuration
• VA+ = +2.5 V; VA- = -2.5 V; VD = +3.3 V
High-Z, Programmable Gain, Differential Amplifier
http://www.cirrus.com
p-p
between 0.1 Hz and 10 Hz
& Description
MUX0
MUX1
INA+
INB+
INA-
INB-
x1, x2, x4, x8, x16, x32, x64
DC to 2 kHz
pp
differential
VA+
VA-
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright © Cirrus Logic, Inc. 2007
(All Rights Reserved)
GUARD
+
-
-
+
Description
The CS3302A is a high input-impedance, differential in-
put, differential output amplifier with programmable
gain, optimized for amplifying signals from high-imped-
ance 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 ex-
ternal inputs, INA and INB, simplify system design as
inputs from a sensor and test DAC. An internal 800Ω
termination can also be selected for noise tests.
Amplifier input impedance is very high, requiring less
than 1 pA of input current. Noise performance is very
good at 1 µ
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
See
PWDN
page
15.
V
p-p
GND
VD
between 0.1 Hz and 10 Hz, and a noise
OUTF+
GAIN0
GAIN1
GAIN2
OUTF-
OUTR-
OUTR+
CS3302A
DS765PP1
NOV '07

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CDB5376 Summary of contents

Page 1

High-Z, Programmable Gain, Differential Amplifier Features & Description Signal Bandwidth kHz Selectable Gain: x1, x2, x4, x8, x16, x32, x64 Differential Inputs, Differential Outputs • Multiplexed inputs: INA, INB, 800Ω termination • Rough / fine charge outputs ...

Page 2

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 ...

Page 3

REVISION HISTORY Revision Date PP1 NOV 2007 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 ...

Page 4

CHARACTERISTICS AND SPECIFICATIONS • Min/Max characteristics and specifications are guaranteed over the Specified Operating Conditions. • Typical performance characteristics and specifications are derived from measurements taken at nom- inal supply voltages and T A • GND = 0 V, ...

Page 5

THERMAL CHARACTERISTICS Parameter Storage Temperature Range Allowable Junction Temperature Junction to Ambient Thermal Impedance Ambient Operating Temperature ANALOG CHARACTERISTICS Parameter Noise Performance Input Voltage Noise Input Voltage Noise Density Input Current Noise Density Distortion Performance Total Harmonic Distortion (Note 5) ...

Page 6

ANALOG CHARACTERISTICS (CONT.) Parameter Gain Gain, Differential Gain, Common Mode Gain Accuracy, Absolute Gain Accuracy, Relative (Note 8) Gain Drift Offset Offset Voltage, Input Referred Offset After Calibration, Absolute Offset Calibration Range Offset Voltage Drift Notes: 6. Common mode signals ...

Page 7

ANALOG CHARACTERISTIC (Cont.) Parameter Analog Input Characteristics Input Signal Frequencies Input Voltage Range (Signal + Vcm) Full Scale Input, Differential Input Impedance, Differential Input Impedance, Common Mode Input Bias Current Crosstalk, Multiplexed Inputs Common to Differential Mode Rejection Analog Output ...

Page 8

DIGITAL CHARACTERISTICS Parameter Digital Characteristics High-level Input Drive Voltage Low-level Input Drive Voltage Input Leakage Current Digital Input Capacitance Rise Times Fall Times Notes: 15. Device is intended to be driven with CMOS logic levels. Input Selection MUX1 800 Ω ...

Page 9

POWER SUPPLY CHARACTERISTICS Parameter Power Supply Current, Normal Mode Analog Power Supply Current Digital Power Supply Current Power Supply Current, Power Down Mode Analog Power Supply Current, PWDN = 1 Digital Power Supply Current, PWDN = 1 Power Supply Rejection ...

Page 10

GENERAL DESCRIPTION The CS3302A is a high-impedance, low-noise CMOS differential input, differential output ampli- fier for precision analog signals between DC and 2 kHz. It has multiplexed inputs, rough/fine charge outputs, and programmable gains of x1, x2, x4, x8, ...

Page 11

Differential M Sensor U AMP X requires two series resistors and a differential capaci- tor to create the modulator anti-alias RC filter. 2.1.3 Differential Signals Analog signals into and out of the CS3302A are differential, consisting of two halves with ...

Page 12

Mux Selection The analog inputs to the amplifier are multiplexed, with external signals applied to the INA+, INA- or INB+, INB- pins. An internal termination is also available for noise tests. Input mux selection is made using the MUX0 ...

Page 13

Connection Diagram shows a connection diagram for the CS3302A amplifier when used with the CS5372A dual ∆Σ Figure 5 modulator, the CS4373A test DAC and the CS5376A digital filter. The diagram shows differential sensors, a test DAC, and analog ...

Page 14

PIN DESCRIPTION Pin Name Pin # I/O VA Positive analog supply voltage. VA Negative analog supply voltage Positive digital supply voltage. GND 15 Ground. INA+, INA Channel ...

Page 15

ORDERING INFORMATION Model CS3302A-IS CS3302A-ISZ, lead (Pb) free 5. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION Model Number CS3302A-IS CS3302A-ISZ, lead (Pb) free * MSL (Moisture Sensitivity Level) as specified by IPC/JEDEC J-STD-020. DS765PP1 CS3302A DS765PP1 Temperature -40 to +85 °C ...

Page 16

PACKAGE DIMENSIONS 24 PIN SSOP PACKAGE DRAWING TOP VIEW DIM ∝ Notes: 1. “D” and “E1” are reference datums and do not included mold flash ...

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