XE3005 Datasheet, PDF (1/37 Pages) Semtech Corporation – Low-Power Audio CODEC

XE3005/XE3006
VSSD VSSA VSSA VDD VREF
VREG11
VREG16
Microphone
Bias
XE3006
AIN
Amp.
Σ∆
modulator
Decimator
Power supply
management
PWM
DAC
Power
amplifier
SPI
Sandman
Functions
Serial Audio
Interface
Clock
mgt
RESET
VDDPA
AOUTP
AOUTN
VSSPA
MISO SS SCK MOSI SMAD SMDA BCLK SDI SDO FSYNC MCLK
XE3005 / XE3006
Low-Power Audio CODEC
GENERAL DESCRIPTION
The XE3005 is an ultra low-power CODEC (Analog to
Digital and Digital to Analog Converter) for voice and
audio applications. It includes microphone supply,
preamplifier, 16-bit ADC, 16-bit DAC, serial audio
interface, power management and clock management
for the ADC and the DAC. The sampling frequency of
the ADC and of the DAC can be adjusted from 4 kHz to
48 kHz.
The XE3006 also includes the Sandman™ function,
which signals whether a relevant voice or audio signal is
present for the ADC or DAC.
FEATURES
• Ultra low-power consumption, below 2 mW
• Low-voltage operation down to 1.8 V
• Sandman™ function to reduce system power
consumption (XE3006)
• Single supply voltage
• Adjustable sampling frequency: 4 – 48 kHz
• Digital format: 16 bit 2s complement
• Requires a minimum number of external
components
• Easy interfacing to various DSPs
• Direct connection to microphone and speaker
• Various programming options
APPLICATIONS
• Wireless Headsets
• Bluetooth™ headset
• Hands-free telephony
• Digital hearing instruments
• Consumer and multimedia applications
• All battery-operated portable audio devices
QUICK REFERENCE DATA
• supply voltage
• current (@20 kHz sampling)
• sampling frequency
• Typical dynamic range ADC
• Typical dynamic range DAC
1.8 – 3.6 V
0.4 mA
4 – 48 kHz
78 dB
78 dB
ORDERING INFORMATION
Part
XE3005
XE3005
XE3006
Package
TSSOP 20 pins
Lead free
uCSP® 20 balls
TSSOP 24 pins
Ext. part no.
XE3005I033TRLF
XE3005I064TRLF
XE3006I019
Temp. range
-20 to 70° C
-20 to 70° C
-20 to 70° C
Rev 1 August 2005
www.semtech.com
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