42
Portable Audio
Low-Power Voice-Band Converters
TLV320AIC12K, TLV320AIC14K, TLV320AIC20K,
TLV320AIC24K
Get samples, datasheets and evaluation modules at:
www.ti.com/sc/device/PARTnumber
(Replace
PARTnumber
with
TLV320AIC12K, TLV320AIC14K, TLV320AIC20K
or
TLV320AIC24K)
High-Performance, Low-Power Audio Converters
TLV320AIC23B, TLV320DAC23
Get samples, datasheets, evaluation modules and app reports at:
www.ti.com/sc/device/TLV320AIC23B
or
www.ti.com/sc/device/TLV320DAC23
The TLV320AIC23B high-performance, low-power stereo audio codec
with highly integrated functionality allows many features to fit into a
small area with minimal power consumption. The TLV320DAC23 is a
pin- and software-compatible version of the TLV320AIC23B, incorporat-
ing a stereo audio DAC and headphone driver.
Key Features
• Very low-power dissipation: 23 mW in playback mode
• 90-dB SNR ADC, 100-dB SNR DAC
• Integrated headphone amplifier: 40 mW into 16
• I
2
C or SPI protocol for control
• Microphone input with side-tone mixer
• Maximum sample rate of 96 kHz
• Bypass mode enables an all-analog path
• Packaging: 5 x 5 mm BGA™
5 x 5 mm 28-pin QFN
28-pin TSSOP
Applications
• Multifunction Internet audio players (portable audio players, cell
phones, PDAs, digital cameras, etc.)
• Portable CD players
• Portable jukeboxes
• Portable radios and boom boxes
The TLV320AIC12K/14K are single-channel, low-power voice-band
codecs typically used in voice-only applications. The TLV320AIC12K
integrates a 16-Ω speaker driver. The TLV320AIC20K/24K are dual-
channel, low-power voice-band codecs typically used in voice-only
applications. The TLV320AIC20K integrates an 8-Ω speaker driver.
Key Features
• 16-bit, programmable sampling rate up to 26 kSPS
• Built-in microphone bias/preamp, handset/headset preamps, anti-
aliasing filter and programmable gain amplifier
• Flexible host port: I
2
C or S
2
C
• SMARTDM serial port
• 10-mW typical power dissipation (AIC12K/14K)
• 20-mW typical power dissipation (AIC20K/24K)
• 16-Ω/8-Ω speaker driver (only on AIC12K/20K)
• Packaging: 30-pin TSSOP (AIC12K/14K)
48-pin TQFP (AIC20K/24K)
Applications
• Low-power, portable voice products
• Voice over IP phone (VoIP)
• Digital telephony
• Speakerphones
Control Interface
Left HP Out
In 2
In 3
ADC
MUX
Serial
Port
DAC
Digital
Filters
ADC
DAC
DAC
Screen
Contrast
Left Out (150
)
Left In
Right In
Mic
Boost
MUX
ADC
Digital
Filters
ADC
DAC
Left Line Out
Right Line Out
DAC
Right HP Out
Audio Interface
Mixer
Volume
Control
Right Out (150
)
Mic In
AGC
In 1
In 4
PLL
Mic In
PGA
Line Out (600
)
Clock
Divider
TLV320AIC23B block diagram.
TLV320AIC24K block diagram.
Audio Solutions Guide
Texas Instruments 1Q 2006
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