Portable Audio
Low-Power Stereo Audio Converter
PCM3792
Get datasheets at:
43
Low-Power, Low-Voltage Stereo Audio Converter
PCM3008
Get samples, datasheets, evaluation modules and app reports at:
The PCM3792 is a low-cost, single-chip, 20-bit stereo
audio codec with 3 single-ended analog inputs, 3 stereo
outputs and 2 mono outputs. It includes an integrated stereo Class-D
audio power amplifier. The PCM3792 accepts left-justified, right-justified
and I
2
S data formats for simple interface to audio DSP or decoder/
encoder chips. It can be controlled with a 2- or 3-wire serial interface.
The PCM3792 is suitable for a wide variety of cost-sensitive consumer
applications where good performance is required.
Key Features
• 95-dB SNR DAC, 90-dB SNR ADC
• Stereo 500 mW at 8
Ω
for speaker amplifier
• Stereo 30 mW at 32
Ω
for headphone amplifier
• +6-dB to –70-dB volume control for each analog output
• +30-dB to –12-dB gain control for analog inputs
• 48-mW power dissipation at 3.3 V (playback)
• 67-mW power dissipation at 3.3 V (recording)
• Auto Level Control (ALC) for playback and recording
• Power supply:
•
2.7 to 3.6 V for digital and analog
•
2.7 to 4.5 V for speaker amplifier
• Packaging: 6 x 6 mm BGA
Applications
• Mobile phone, PDA
• Video camcorder, movie digital still camera
• Portable digital audio player
*Expected release April 2006.
The PCM3008 is a low-cost, single-chip, 16-bit stereo audio codec with
single-ended analog inputs and outputs. The PCM3008 accepts left-
justified format for ADC and right-justified format for DAC. Independent
power-down modes for ADC and DAC are provided. The PCM3008 is
suitable for a wide variety of cost-sensitive consumer applications
where good performance is required.
Key Features
• Stereo codec supporting up to 48 kSPS
• 92-dB SNR DAC, 88-dB SNR ADC
• 32-mW power dissipation at 2.4 V
• System clock: 256 f
S
, 384 f
S
, 512 f
S
• Single supply: 2.1 to 3.6 V
• Packaging: 16-pin TSSOP
Applications
• Digital video camera
• Portable MD player
• Other portable system
De-Emphasis
Control
Control Interface
Left In
ADC
Volume
Control
DAC
Left Out
Right In
3 GPIO
Left In 1
Left In 2
Left In 3
Control Interface
PGA
MUX
ADC
Automatic
Level
Control
Right In 1
Right In 2
Right In 3
PGA
MUX
Audio Interface
Clock
Manager
ADC
DAC
DAC
Mixer
Right Line Out
Left Line Out
Right HP
Left HP
Right Speaker
(Class-D)
Left Speaker
(Class-D)
Mono 1
Mono 2
ADC
Equalizer
DAC
Right Out
Audio Interface
Clock
PCM3008 block diagram.
PCM3792 block diagram.
Texas Instruments 1Q 2006
Audio Solutions Guide
➔