PCM3168APAPR datasheet(19/66 Pages) TI

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PRODUCT OVERVIEW

ANALOG INPUTS

ANALOG OUTPUTS

PCM3168A

PCM3168A-Q1

www.ti.com ......................................................................................................................................................................................... SBAS452 – SEPTEMBER 2008

The PCM3168A and PCM3168A-Q1 are high-performance, multi-channel codecs targeted for automotive audio

applications such as external amplifiers, as well as home multi-channel audio applications (for example, home

theaters and A/V receivers). The PCM3168A and PCM3168A-Q1 consist of six-channel analog-to-digital

converters (ADCs) and eight-channel digital-to-analog converters (DACs). The ADC input is selectable between

single-ended and differential inputs. The DAC output type is fixed with a differential configuration. The

PCM3168A and PCM3168A-Q1 support 24-bit linear PCM input and output data in standard audio formats

(left-justified, right-justified, and I2S), DSP and TDM formats, and various sample frequencies from 8 kHz to 192

kHz (the ADC configuration supports only up to 96 kHz). The TDM format is useful to save interface bus line

numbers for multi-channel audio data communication between the codec and digital audio processor. The

PCM3168A and PCM3168A-Q1 offer three modes for device control: two-wire I2C software, four-wire SPI

software, and hardware modes.

The PCM3168A and PCM3168A-Q1 include six ADCs, each with individual pairs of differential voltage input pins,

as shown in Table 1. Additionally, the PCM3168A and PCM3168A-Q1 have the capability of single-ended inputs.

The full-scale input voltage is (0.2 × VCCAD1) VRMS at the single-ended input mode and (0.4 × VCCAD1) VRMS

at the differential input mode. The input mode is selected by the MODE pin in hardware control mode or by

be terminated with AGNDAD1/2 via a capacitor or terminated with VCOMAD.

Table 1. Pin Assignments in Differential and Single-Ended Input Modes

CHANNEL

DIFFERENTIAL INPUT MODE

SINGLE-ENDED INPUT MODE

1 (ADC1)

VIN1+, VIN1–

VIN1+

2 (ADC2)

VIN2+, VIN2–

VIN2+

3 (ADC3)

VIN3+, VIN3–

VIN3+

4 (ADC4)

VIN4+, VIN4–

VIN4+

5 (ADC5)

VIN5+, VIN5–

VIN5+

6 (ADC6)

VIN6+, VIN6–

VIN6+

The PCM3168A and PCM3168A-Q1 include eight DACs, each with individual pairs of differential voltage inputs

pins, as shown in Table 2. The full-scale output voltage is (1.6 × VCCDA1) VPP in differential mode. DC-coupled

loads are allowed in addition to ac-coupled loads if the load resistance conforms to the specification.

Table 2. Pin Assignments for Differential Output

CHANNEL

DIFFERENTIAL OUTPUT

1 (DAC1)

VOUT1+, VOUT1–

2 (DAC2)

VOUT2+, VOUT2–

3 (DAC3)

VOUT3+, VOUT3–

4 (DAC4)

VOUT4+, VOUT4–

5 (DAC5)

VOUT5+, VOUT5–

6 (DAC6)

VOUT6+, VOUT6–

7 (DAC7)

VOUT7+, VOUT7–

8 (DAC8)

VOUT8+, VOUT8–

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PCM3168APAPR Datasheet(PDF) 19 Page - Texas Instruments

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