Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsData collecting ICsData acquisition IC - DA converter (DAC) SSOP 28

Serial

Input

I/F

Mode

Control

I/F

8X Oversampling

Digital Filter with

Function

Controller

Crystal/OSC

XTI

SCK

XTO CLKO V

CC1

AGND1 V

DGND

Enhanced

Multi-level

Delta-Sigma

Modulator

OUT

CC2

AGND2L

EXTL

Open Drain

DAC

Low-pass

Filter

Low-pass

Filter

BPZ-Cont.

OUT

EXTR

ZERO

DAC

MC/DM1

ML/IIS

LRCIN

DIN

BCKIN

CS/IWO

MD/DM0

MODE

MUTE

RST

Power Supply

24-Bit, 96kHz Sampling

CMOS Delta-Sigma Stereo Audio

DIGITAL-TO-ANALOG CONVERTER

49%

FPO

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111

Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

PCM1716

DESCRIPTION

The PCM1716 is designed for Mid to High grade

Digital Audio applications which achieve 96kHz sam-

pling rates with 24-bit audio data. PCM1716 uses a

newly developed, enhanced multi-level delta-sigma

modulator architecture that improves audio dynamic

performance and reduces jitter sensitivity in actual

applications.

The internal digital filter operates at 8x over sampling

at a 96kHz sampling rate, with two kinds of roll-off

performances that can be selected: sharp roll-off, or

slow roll-off, as required for specific applications.

PCM1716 is suitable for Mid to High grade audio

applications such as CD, DVD-Audio, and Music

Instruments, since the device has superior audio

dynamic performance, 24-bit resolution and 96kHz

sampling.

FEATURES

● ENHANCED MULTI-LEVEL DELTA-SIGMA DAC

● SAMPLING FREQUENCY (f

): 16kHz - 96kHz

● INPUT AUDIO DATA WORD:

16-, 20-, 24-Bit

● HIGH PERFORMANCE:

THD+N: –96dB

Dynamic Range: 106dB

SNR: 106dB

Analog Output Range: 0.62 x V

(Vp-p)

● 8x OVERSAMPLING DIGITAL FILTER:

Stop Band Attenuation: –82dB

Passband Ripple: ±0.002dB

Slow Roll Off

● MULTI FUNCTIONS:

Digital De-emphasis

L/R Independent Digital Attenuation

Soft Mute

Zero Detect Mute

Zero Flag

Chip Select

Reversible Output Phase

● +5V SINGLE SUPPLY OPERATION

● SMALL 28-LEAD SSOP PACKAGE

PCM1716

SBAS080

Not Recommended For New Designs

Summary of content (18 pages)

PAGE 1
Not Recommended For New Designs ® PCM1716 49% 1 716 FPO PCM 24-Bit, 96kHz Sampling CMOS Delta-Sigma Stereo Audio DIGITAL-TO-ANALOG CONVERTER TM FEATURES DESCRIPTION ● ENHANCED MULTI-LEVEL DELTA-SIGMA DAC ● SAMPLING FREQUENCY (fs): 16kHz - 96kHz ● INPUT AUDIO DATA WORD: 16-, 20-, 24-Bit ● HIGH PERFORMANCE: THD+N: –96dB Dynamic Range: 106dB SNR: 106dB Analog Output Range: 0.62 x VCC (Vp-p) ● 8x OVERSAMPLING DIGITAL FILTER: Stop Band Attenuation: –82dB Passband Ripple: ±0.
PAGE 2
Not Recommended For New Designs SPECIFICATIONS All specifications at +25°C, +VCC = +VDD = +5V, fS = 44.1kHz, and 24-bit input data, SYSCLK = 384fS, unless otherwise noted.
PAGE 3
Not Recommended For New Designs PIN CONFIGURATION LRCIN PIN ASSIGNMENTS 1 28 ML/IIS DIN 2 27 MC/DM1 BCKIN 3 26 MD/DM0 CLKO 4 25 MUTE XTI 5 24 MODE XTO 6 23 CS/IWO DGND 7 VDD 8 22 RST PCM1716E VCC2R 21 ZERO 9 20 VCC2L AGND2R 10 19 AGND2L EXTR 11 18 EXTL PIN NAME I/O 1 LRCIN IN DESCRIPTION Left and Right Clock Input. This clock is equal to the sampling rate - fS.(1) 2 DIN IN Serial Audio Data Input(1) 3 BCKIN IN Bit Clock Input for Serial Audio Data.
PAGE 4
Not Recommended For New Designs TYPICAL PERFORMANCE CURVES All specifications at +25°C, +VCC = +VDD = +5V, fS = 44.1kHz, and 24-bit input data, SYSCLK = 384fS, unless otherwise noted. THD+N vs LEVEL (fS = 44.1kHz) THD+N vs SAMPLING FREQUENCY (VCC = VDD = 5V, 24-Bit) –20 10 88 –30 256fs 97 –60 0.1 –70 0.010 –80 24-Bit 384fs –90 –100 0.001 103 32 110 44.
PAGE 5
Not Recommended For New Designs TYPICAL PERFORMANCE CURVES (CONT) OVERALL FREQUENCY CHARACTERISTIC (Sharp Roll-Off) PASSBAND RIPPLE CHARACTERISTIC (Sharp Roll-Off) 0 0.003 –20 0.002 Amplitude (dB) Amplitude (dB) –40 –60 –80 –100 0.001 0 –0.001 –120 –0.002 –140 –160 –0.003 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.1 0.2 0.3 0.4 Frequency (x fS) Frequency (x fS) OVERALL FREQUENCY CHARACTERISTIC (Slow Roll-Off) FREQUENCY CHARACTERISTIC (Slow Roll-Off) 0.
PAGE 6
Not Recommended For New Designs SYSTEM CLOCK Typical input system clock frequencies to the PCM1716 are shown in Table I, also, external input clock timing requirements are shown in Figure 2. The system clock for PCM1716 must be either 256fS, 384fS, 512fS or 768fS, where fS is the audio sampling frequency (typically 32kHz, 44.1kHz, 48kHz, or 96kHz). But 768fS at 96kHz is not accepted.
PAGE 7
Not Recommended For New Designs 1/fS L_ch R_ch LRCIN (pin 1) BCKIN (pin 3) (1) 16-Bit Right Justified DIN (pin 2) 14 15 16 1 2 MSB (2) 20-Bit Right Justified DIN (pin 2) 18 19 20 1 2 23 24 1 2 DIN (pin 2) 18 3 1 2 1 22 3 19 20 1 2 22 MSB 14 3 23 24 1 18 3 2 1 2 22 3 LSB MSB 23 24 LSB 22 3 19 20 LSB MSB 23 24 15 16 LSB MSB LSB 3 2 MSB LSB MSB (4) 24-Bit Left Justified 15 16 LSB MSB (3) 24-Bit Right Justified DIN (pin 2) 14 3 23 24 LSB 1/fS L_ch
PAGE 8
Not Recommended For New Designs VCC = VDD Reset Reset Removal Internal Reset 1024 system (= XTI) clocks XTI Clock FIGURE 5. Internal Power-On Reset Timing. RST tRST(1) Reset Reset Removal Internal Reset 1024 system (XTI) clocks XTI Clock NOTE: (1) tRST = 20ns min. FIGURE 6. External Forced Reset Timing. FUNCTIONAL DESCRIPTION PCM1716 has several built-in functions including digital attenuation, digital de-emphasis, input data format selection, and others. These functions are software controlled.
PAGE 9
Not Recommended For New Designs DM1 (Pin 27) DM0 (Pin 26) DE-EMPHASIS L L H H L H L H OFF 48kHz 44.1kHz 32kHz FUNCTION Input Audio Data Format Selection Standard Format Left Justified I2S Format Input Audio Data Format Input data format can be selected by I2S (pin 28) and IWO (pin 23) (Pin 28) IWO (Pin 23) L L H H L H L H Standard Format Input Audio Data Bit Selection 16-Bit 20-Bit 24-Bit TABLE IV. De-emphasis Control.
PAGE 10
Not Recommended For New Designs REGISTER 2 (A1 = 1, A0 = 0) REGISTER NAME BIT NAME Register 0 AL (7:0) LDL A (1:0) res DAC Attenuation Data for Lch Attenuation Data Load Control for Lch Register Address Reserved, should be “L” Register 1 AR (7:0) LDR A (1:0) res DAC Attenuation Data for Rch Attenuation Data Load Control for Rch Register Address Reserved, should be “L” Register 2 MUT DEM OPE IW (1:0) res A (1:0) res Left and Right DACs Soft Mute Control De-emphasis Control Left and Right DACs Oper
PAGE 11
Not Recommended For New Designs forced to a bipolar zero state (VCC / 2). The zero detection feature is used to avoid noise which may occur when the input is DC. When the output is forced to bipolar zero, there may be an audible click. PCM1716 allows the zero detect feature to be disabled so the user can implement an external muting circuit. SRO (B3) is roll-off performance of digital filter selection. Sharp Roll-Off SRO = H Slow Roll-Off ATC (B2) is used as an attenuation control.
PAGE 12
Not Recommended For New Designs THEORY OF OPERATION the advantage of stability and clock jitter sensitivity over the typical one-bit (2 level) delta-sigma modulator. The delta-sigma section of PCM1716 is based on a 8-level amplitude quantizer and a 4th-order noise shaper. This section converts the oversampled input data to 8-level deltasigma format.
PAGE 13
Not Recommended For New Designs APPLICATION CONSIDERATIONS BYPASSING POWER SUPPLIES The power supplies should be bypassed as close as possible to the unit. Refer to Figure 15 for optimal values of bypass capacitors. DELAY TIME There is a finite delay time in delta-sigma converters. In A/D converters, this is commonly referred to as latency. For a delta-sigma D/A converter, delay time is determined by the order number of the FIR filter stage, and the chosen sampling rate.
PAGE 14
Not Recommended For New Designs PCM1716E PCM Audio Data Input XTI Buffer Out or 1/2 Divided Out SYSTEM CLOCK (256/384/512/768fS) to DGND of D.
PAGE 15
PACKAGE OPTION ADDENDUM www.ti.
PAGE 16
PACKAGE MATERIALS INFORMATION www.ti.com 13-Jun-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device PCM1716E/2K Package Package Pins Type Drawing SSOP DB 28 SPQ Reel Reel Diameter Width (mm) W1 (mm) 2000 330.0 17.4 Pack Materials-Page 1 A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 8.5 10.8 2.4 12.0 16.
PAGE 17
PACKAGE MATERIALS INFORMATION www.ti.com 13-Jun-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) PCM1716E/2K SSOP DB 28 2000 336.6 336.6 28.
PAGE 18
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.