PCM1742KE

Product Summary

The PCM1742KE is a CMOS, monolithic, integrated circuit which includes stereo Digital-to-Analog Converters (DACs) and support circuitry in a small SSOP-16 package. The data converters utilize Texas Instrument’s enhanced multilevel delta-sigma architecture that employs fourth-order noise shaping and 8-level amplitude quantization to achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1742KE accepts industry standard audio data formats with 16- to 24-bit data, providing easy interfacing to audio DSP and decoder chips. Sampling rates up to 200kHz are supported. A full set of user-programmable functions are accessible through a 3-wire serial control port that supports register write functions. The applications of the PCM1742KE are (1)AV receivers; (2)DVD movie players; (3)DVD ADD-on cards for high-end PCs; (4)DVD audio players; (5)HDTV receivers; (6)CAR audio systems; (7)other applications requiring 24-bit audio.

Parametrics

PCM1742KE absolute maximum ratings: (1)Power Supply Voltage, VDD: +4.0V; (2)VCC: +6.5V; (3)Ground Voltage Differences: ±0.1V; (4)Digital Input Voltage: –0.3V to (6.5V + 0.3V); (5)Input Current (except power supply): ±10mA; (6)Ambient Temperature Under Bias: –40 to +125℃; (7)Storage Temperature: –55 to +150℃; (8)Junction Temperature: +150℃; (9)Lead Temperature (soldering, 5s): +260℃; (10)Package Temperature (IR reflow, 10s): +235℃.

Features

PCM1742KE features: (1)24-bit resolution; (2)4x/8x oversampling digital filter: Stopband Attenuation: –55dB; Passband Ripple: ±0.03dB; (3)sampling frequency: 5kHz to 200kHz; (4)system clock: 128, 192, 256, 384, 512, 768fS with Auto Detect; (5)accepts 16-, 18-, 20-, and 24-bit audio data; (6)data formats: Standard, I2S, and Left-Justified; (7)user-programmable mode controls: Digital Attenuation: 0dB to –63dB, 0.5dB/Ste; Digital De-Emphasis; Digital Filter Roll-Off: Sharp or Slow; Soft Mute; Zero Flags for Each Output; (8)dual-supply operation: +5V Analog, +3.3V Digital; (9)5V tolerant digital inputs; (10)small SSOP-16 package; (11)same package size as SOP-8.

Diagrams