DSD1792

Features:

`Supports Both DSD and PCM Formats
`24-Bit Resolution
`Analog Performance:
− Dynamic Range:
− 132 dB (9 V rms, Mono)
− 129 dB (4.5 V rms, Stereo)
− 127 dB (2 V rms, Stereo)
− THD+N: 0.0004%
`Differential Current Output: 7.8 mA p-p
`8* Oversampling Digital Filter:
− Stop-Band Attenuation: 130 dB
− Pass-Band Ripple: ±0.00001 dB
`Sampling Frequency: 10 kHz to 200 kHz
`System Clock: 128, 192, 256, 384, 512, or
`768 fS With Autodetect
`Accepts 16-, 20-, and 24-Bit Audio Data
`PCM Data Formats: Standard, I2S, and Left-Justified
`Optional Interface to External Digital Filter or DSP Available
`TDMCA Interface Available
`User-Programmable Mode Controls:
− Digital Attenuation: 0 dB to 120 dB, 0.5 dB/Step
− Digital De-Emphasis
− Digital Filter Rolloff: Sharp or Slow
− Soft Mute
`Dual Supply Operation:
− 5 V Analog, 3.3 V Digital
`5-V Tolerant Digital Inputs


Application

·A/V Receivers
·SACD Player
·DVD Players
·HDTV Receivers
·Car Audio Systems
·Digital Multi-Track Recorders
·Other Applications Requiring 24-Bit Audio


Pinout




Specifications

		DSD1792
Supply voltage	VCC1, VCC2L, VCC2R	−0.3 V to 6.5 V
	VDD	−0.3 V to 4 V
Supply voltage differences	VCC1, VCC2L and VCC2R	±0.1 V
Ground voltage differences	AGND1, AGND2, AGND3L, AGND3R and DGND	±0.1 V
Digital input voltage	PLRCK, PDATA, PBCK, DSDL, DSDR, DBCK, MS(2), MDI(2), MC, SCK, RST	0.3 V to 6.5 V
	DSDL(3), DSDR(3), MS(3), MDO	0.3 V to (VDD + 0.3 V) < 4 V
Analog input voltage		0.3 V to (VCC + 0.3 V) < 6.5 V
Input current (any pins except supplies)		±10 mA
Ambient temperature under bias		40°C to 125°C
Storage temperature		55°C to 150°C
Junction temperature		150°C
Lead temperature (soldering)		260°C, 5 s
Package temperature (IR reflow, peak)		250°C

Description

The DSD1792 is a monolithic CMOS integrated circuit that includes stereo digital-to-analog converters and support circuitry in a small 28-lead SSOP package. The data converters use TI's advanced-segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter. The DSD1792 provides balanced current outputs, allowing the user to optimize analog performance externally.

The DSD1792 accepts the PCM and DSD audio data formats, providing easy interfacing to audio DSP and decoder chips. The DSD1792 also interfaces with external digital filter devices (DF1704, DF1706, PMD200). Sampling rates up to 200 kHz are supported. A full set of user−programmable functions is accessible through a 4-wire serial control port, which supports register write and readback functions. The DSD1792 also supports the time-division-multiplexed command and audio (TDMCA) data format.