16
Home Theater Products
DVD Receivers
24-Bit, 192-kHz, Enhanced Multilevel Delta-
Sigma Audio DAC
PCM1680
Get samples, datasheets and app reports at:
➔
2-Channel, 100-/125-W Power Stages
TAS5142, TAS5152
Get samples, datasheets and app reports at:
or
The TAS5142 and TAS5152 are high-performance
integrated stereo digital amplifier power stages
designed to drive 4-Ω speakers at 100 W and 125 W
per channel respectively. They are pin-compatible and require only a
simple passive demodulation filter to deliver high-quality, high-efficiency
audio amplification. The TAS5142 also comes in a cost-effective pack-
age that can drive 100 W x 2, but because of thermal limitations both
channels should not be driven at full power simultaneously.
Key Features
• TAS5142 Po – 2 x 100 W @ 10% THD+N BTL into 4
Ω
• TAS5152 Po – 2 x 125 W @ 10% THD+N BTL into 4
Ω
• 100 dB (A-wtd) SNR
• < 0.1% THD+N @ 1 W
• Supports PWM frame rates of 192 to 384 kHz
• Power stage has > 90% efficiency
• Enhanced OC detection circuit allows use of smaller inductor cores
• Resistor programmable current limit enables lower-cost power
supplies
• Power on Reset for protected power up without any power supply
sequencing
• Self-protection design (including under-voltage, over-temperature,
and short-circuit protection) with error reporting
• Stand-alone protection recovery
• Pb-Free soldering supported
• EMI compliant when used with recommended system design
• Packaging: 36-pin SSOP
Applications
• AV receivers
• DVD receivers
The PCM1680 is a CMOS monolithic integrated circuit that features
eight 24-bit audio digital-to-analog converters and support circuitry
in a small 28-lead SSOP. The digital-to-analog converters use TI’s
enhanced multilevel delta-sigma architecture to achieve excellent
signal-to-noise performance and a high tolerance to clock jitter.
Key Features
• High-performance dynamic range: 105 dB
• SNR: 105 dB
• High-performance THD+N: 0.002%
• Full-scale single voltage output: 3.9 V
PP
• Software control, I
2
C I/F supported
• 1152 f
S
support
• Pin-to-pin compatible with PCM1780DBQ — single footprint for
stereo or six channels
• Selectable digital attenuation mode
Applications
• DVD player/recorder
• Home theater in a box
• AV receiver
• HDTV receiver
• Car audio systems
BCK
LRCK
DATA1<1,2>
DATA2<3,4>
DATA3<5,6>
DATA4<7,8>
DAC
Serial
Input
I/F
DAC
8x
Over-
sampling
Digital
Filter
with
Function
Controller
Enhanced
Multi-
level
Delta-
Sigma
Modulator
DAC
DAC
DAC
DAC
DAC
System Clock
System
Zero
Clock
Detect
Manager
ZERO1 ZERO2
DAC
Output Amp &
Low-Pass Filter
Output Amp &
Low-Pass Filter
Output Amp &
Low-Pass Filter
Output Amp &
Low-Pass Filter
Output Amp &
Low-Pass Filter
Output Amp &
Low-Pass Filter
Output Amp &
Low-Pass Filter
Output Amp &
Low-Pass Filter
Power Supply
V
OUT
1
V
OUT
2
V
OUT
3
V
OUT
4
V
COM
V
OUT
5
V
OUT
6
V
OUT
7
V
OUT
8
Gate Drive A
Gate Drive B
PWM
Receivers
Gate Drive C
Gate Drive D
H-Bridge A
H-Bridge B
H-Bridge C
H-Bridge D
MS/ADR
MC/SCL
MD/SDA
MSEL
Function
Control
I/F
SCK
Over-Temp
Protection
Supplies and
Reference
Timing
Control
V
CC
1 V
CC
2
V
DD
DGND
ADGND2
ADGND1
PCM1680 block diagram.
Quiet Power-On
Reset Control
Over-Current
Limit/Latch
TAS5152 block diagram.
Audio Solutions Guide
Texas Instruments 1Q 2006