Rev 1 August 2005 www.semtech.com
1
XE3005/XE3006
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.
APPLICATIONS
Wireless Headsets
Bluetooth™ headset
Hands-free telephony
Digital hearing instruments
Consumer and multimedia applications
All battery-operated portable audio devices
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
QUICK REFERENCE DATA
supply voltage 1.8 – 3.6 V
current (@20 kHz sampling) 0.4 mA
sampling frequency 4 – 48 kHz
Typical dynamic range ADC 78 dB
Typical dynamic range DAC 78 dB
ORDERING INFORMATION
Part Package Ext. part no. Temp. range
XE3005 TSSOP 20 pins XE3005I033TRLF -
20 to 70° C
XE3005
Lead free
uCSP® 20 balls
XE3005I064TRLF
-20 to 70° C
XE3006 TSSOP 24 pins XE3006I019
-20 to 70° C
Amp.
Σ∆
modulator
Decimator
Serial Audio
Interface
SPI
XE3006
Power supply
management
VDD VSSD VREF
MCLKBCLK FSYNC SDI SCK SS
AIN
Microphone
Bias
VREG16
VSSA
Clock
mgt
PWM
DAC
Power
amplifier
AOUTP
AOUTN
VDDPA
VSSPA
SDO MOSI MISO
Sandman
Functions
SMDASMAD
RESET
VREG11
VSSA
© Semtech 2005 www.semtech.com
2
XE3005/XE3006
Table of Contents
1
Device Description...................................................................................................................................................3
1.1 Terminals Description XE3005/6................................................................................................................................4
2 Functional Description ............................................................................................................................................5
2.1 Device Functions........................................................................................................................................................5
2.2 Power-Down Functions ........................................................................................................................................... 12
3 Serial Communications......................................................................................................................................... 13
3.1 Serial Audio Interface .............................................................................................................................................. 13
3.2 Register Programming ............................................................................................................................................ 14
3.3 Serial Peripheral Interface - SPI.............................................................................................................................. 15
4 Sandman™ Function (XE3006) ............................................................................................................................ 17
5 Specifications ........................................................................................................................................................ 19
5.1 Absolute Maximum Ratings..................................................................................................................................... 19
5.2 Recommended Operating Conditions..................................................................................................................... 19
5.3 Electrical Characteristics......................................................................................................................................... 20
6 Application Information........................................................................................................................................ 27
6.1 Application Schematics – XE3006 .......................................................................................................................... 27
7 Register Description ............................................................................................................................................. 28
7.1 Register Functional Summary................................................................................................................................. 28
7.2 Register Definitions ................................................................................................................................................. 29
8 Mechanical Information ........................................................................................................................................ 33
8.1 XE3005 package size (TSSOP20).......................................................................................................................... 33
8.2 XE3005 package size (5x4 uCSP
®
)........................................................................................................................ 34
8.3 XE3006 Package size (TSSOP24).......................................................................................................................... 35
9 XE3005 Land pattern recommendations (5x4 uCSP
®
)....................................................................................... 36
© Semtech 2005 www.semtech.com
3
XE3005/XE3006
1 DEVICE DESCRIPTION
1
5
6
7
8
9
10
11
12
MCLK
SMAD
SMDA
VDD
NRESET
VSSA
VREG16
VREF
VSSA
VSSD
VREG11
AIN
24
23
22
21
20
19
18
17
16
14
13
MOSI
SS
SCK
MISO
SDI
SDO
BCLK
FSYNC
AOUTP
VDDPA
AOUTN
VSSPA
4
15
3
2
1
5
6
7
8
9
10
MCLK
SS
VDD
NRESET
VREG16
VREF
VSSA
VSSD
VREG11
AIN
20
19
18
17
16
15
14
13
12
MOSI
SCK
SDI
SDO
BCLK
FSYNC
AOUTP
VDDPA
AOUTN
VSSPA
4
11
3
2
XE3006
XE3005
Figure 1: Pin layout of the XE3006 and XE3005 in TSSOP
TOP VIEW
BOTTOM VIEW
XEMICS
XE3005
AOUTN
AOUTP
BCLK
SDI
SCK
VSSPA
VDDPA
FSYNC
SDO
MOSI
VSSD
VREG16
SS
MCLK
AIN
VSSA
VREF
NRESET
VDD
VREG11
Figure 2: Pin layout of the XE3005 in uCSP®
The XE3006 is available in a TSSOP24 package. The XE3005 is available in a TSSOP20 and uCSP® package. Detailed
information is found in chapter 8, Mechanical Information.

XE3005I033TRLF

Mfr. #:
Manufacturer:
Semtech
Description:
IC CODEC LOW PWR 16BIT 20-TSSOP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet