56
Professional Audio
Low-Power, Wide Dynamic Range, 24-Bit Audio
ADC for Wireless Mic/Portable Applications
PCM4201
Get samples, datasheets, evaluation modules and app reports at:
www.ti.com/sc/device/PCM4201
High-Performance, 24-Bit, 2- and 4-Channel
Stereo Audio ADCs
PCM4202, PCM4204
Get samples, datasheets, evaluation modules and app reports at:
www.ti.com/sc/device/PCM4202
or
www.ti.com/sc/device/PCM4204
The PCM4204 is a high-performance stereo ADC designed for profes-
sional audio applications. It supports 24-bit linear PCM output data
with sampling frequencies up to 216 kHz. It can also be configured to
output either 64x or 128x oversampled one-bit direct stream digital
(DSD) data for both channels. The PCM4204 is also ideal for DVD-
Audio and super audio compact disc (SACD) recording applications.
Key Features
• Dynamic range: 118 dB
• THD+N: –105 dB
• 24-bit PCM or 1-bit DSD output
• Supports PCM sampling frequencies up to 216 kHz
• Supports 64x and 128x DSD outputs
• Fully differential inputs
• Low power dissipation: 600 mW at f
S
= 48 kHz;
660 mW at f
S
= 96 kHz
• PCM4202 is a 2-channel version of PCM4204
• Packaging: 64-lead HTQFP PowerPAD™ (PCM4204) and
28-lead SSOP (PCM4202)
Applications
• Professional studio equipment
• DVD-Audio and super audio compact disc (SACD)
The PCM4201 is a low-power, 24-bit, delta-sigma audio ADC designed
for portable applications, such as digital wireless microphones and
battery-operated recording equipment, that require both wide dynamic
range and low power consumption. The device features a 24-bit linear
PCM data output, with a data format compatible with digital signal
processors and digital audio interface transmitters.
Key Features
• Dynamic range: up to 112 dB (A-weighted)
• THD+N: –105 dB
• Digital high-pass filter for DC removal
• Audio serial port:
Master or slave mode operation
24-bit linear PCM output data
Left justified/DSP-compatible data format
• Three sampling modes:
Normal: low power operation up to f
S
= 48 kHz with
64x oversampling
Normal: high-performance operation up to f
S
= 48 kHz with
128x oversampling
Double speed: operation up to f
S
= 96 kHz with 64x oversampling
• Supply voltage: +5 V analog, +3.3 V digital
• Packaging: 16-lead TSSOP
Applications
• Digital wireless microphones
• Portable digital recorders
• Battery-powered audio processing equipment
V
IN
R+
V
IN
R–
V
COM
R
A
GND
R
V
REF
R
Delta-
Sigma
Modulator
Decimation
Filter
HPF
LRCK
or DSDBCK
BCK
or DSDL
Voltage
Reference
Audio
Serial
Port
DATA
or DSDR
V
REF
L
A
GND
L
V
COM
L
V
IN
L–
V
IN
L+
Voltage
Reference
OVFR
OVRL
S/~M
FMT
0
FMT
1
Decimation
Filter
VCCR+
VCCR–
Delta-Sigma
Modulator
Decimation
Filter
HPF
Audio
Serial
Port
FSYNC
BCK
DATA
S/M
VREF+
VREF–
Voltage
Reference
HPFD
Delta-
Sigma
Modulator
HPF
BYPASS
OSR
0
OSR
1
OSR
2
SCKI
RST
Power
Reset
Logic
Clock
Control
RATE
SCKI
/RST
Power
Reset
Logic
Clock
Control
VCC AGND
VDD DGND
V
CC
A
GND
V
DD
D
GND
PCM4201 block diagram.
PCM4202 block diagram.
Audio Solutions Guide
Texas Instruments 1Q 2006
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