Features: COMPLETE DELTA-SIGMA STEREO DAC
VOLTAGE-CONTROLLED CRYSTALOSCILLATOR: 27MHz ±150ppm Output with0V to 3V Input
PROGRAMMABLE PLL256fS or 384fS Audio System Clock Output
DYNAMIC PERFORMANCE:Dynamic Range: 94dBSNR: 94dBTHD+N: 89dB
SAMPLING FREQUENCIES:16kHz, 22.05kHz, 24kHz32kHz, 44.1kHz, 48kHz64kHz, 88.2kHz, 96kHz
SERIAL AUDIO INTERFACE:Standard or I2S Data Formats16-, 20-, or 24-Bit Data
I2C-BUS® INTERFACE FOR CONTROLREGISTERS(1):Slave Receiver Operation7-Bit AddressingStandard Transfer Rate (up to 100kbps)
PROGRAMMABLE CONTROLS:Digital Attenuation (256 steps)Soft MuteInfinite Zero Detect MuteDe-Emphasis (32kHz, 44.1kHz, 48kHz)DAC Output Mode
SINGLE +5V SUPPLY
SMALL SSOP-24 PACKAGE
Application SET-TOP BOXES
DIGITAL BROADCAST RECEIVERSPinout
SpecificationsPower Supply Voltage(1).................................................. +6.5V
Supply Voltage Differences(2).......................................... ±0.1V
GND Voltage Differences(3).............................................. ±0.1V
Digital Input Voltage ................................ 0.3V to (VDD + 0.3V)
Analog Input Voltage ................................0.3V to (VCC + 0.3V)
Input Current (any pins except supplies) ....................... ±10mA
Operating Temperature Range ...................... 25°C to +85°C
Storage Temperature .....................................55°C to +125°C
Junction Temperature ..................................................... +150°C
Lead Temperature (soldering, 5s) ................................... +260°C
Package Temperature (IR reflow, peak, 10s) .................. +235°CDescriptionThe PCM1740 is a complete stereo audio digital-to-analogconverter with on-chip PLL and VCXO. The PCM1740 isdesigned specifically for set-top box applications requiringhigh-quality audio playback, a precision tuned 27MHz mas-ter clock source, and support for multiple audio-samplingfrequencies.
The stereo D/A converter PCM1740 utilizes multi-bit, delta-sigmaarchitecture, which includes an 8x interpolation filter, third-order noise shaping, 5-level amplitude quantization, and ananalog low-pass filter. The PCM1740 includes a number ofuser-programmable functions, which are accessed via astandard I2C-Bus interface.
PCM1740 Data Sheet
