8/12/2019 PCM58P-K

1/6

International Airport Industrial Park Mailing Address: PO Box 11400 Tucson, AZ 85734 Street Address: 6730 S. Tucson Blvd. Tucson, AZ 85706Tel: (520) 746-1111 Twx: 910-952-1111 Cable: BBRCORP Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132

DESCRIPTIONThe PCM58P is a complete, precision 18-bit digital-to-analog converter with ultra-low distortion over a verywide frequency range. The latched serial input dataformat of the PCM58P is totally based on the widelysuccessful 16-bit PCM56P format (with the addition of two more data bits). The PCM58P features a very lownoise and fast settling current output.

The PCM58P comes in a 28-pin plastic DIP package.A provision is made for external adjustment of the fourMSBs to further improve the PCM58Ps specifications,if desired. Applications include very low distortionfrequency synthesis and high-end consumer and pro-fessional digital audio applications.

FEATURES18-BIT MONOLITHIC AUDIO D/ACONVERTERVERY LOW MAX THD+N: 96dB WithoutExternal Adjustment; PCM58P-KSERIAL INPUT FORMAT 100%COMPATIBLE WITH INDUSTRY STD16-BIT PCM56PVERY FAST SETTLING, GLITCH-FREECURRENT OUTPUT (200ns)LOW-NOISE SCHMITT TRIGGER LOGICINPUT CIRCUITRYCOMPLETE WITH REFERENCERELIABLE PLASTIC 28-PIN DIPPACKAGE

Precision, 18-Bit Monolithic AudioDIGITAL-TO-ANALOG CONVERTER

PCM58P

PCM58P

18-BitIOUT DAC

Reference

Serial-to-ParallelShift Register

Clock

Latch Enable

Data

ControlLogic

VREF

MSB Adj

IOUT

RF

RF

1988 Burr-Brown Corporation PDS-868A Printed in U.S.A. October, 1993

8/12/2019 PCM58P-K

2/6

PCM58P

2

SPECIFICATIONSELECTRICALAll Specifications at 25 C, and VCC = +5.0V and 12.0V unless otherwise noted.

PCM58P /P,J/P,K

PARAMETER CONDITIONS MIN TYP MAX UNITS

RESOLUTION 18 BITS

DYNAMIC RANGE 108 dB

DIGITAL INPUTLogic Family TTL/CMOS CompatibleLogic Level: V IH +2.0 +V CC V

VIL 0.0 0.8 VIIH VIH = +2.7V +1.0 AIIL VIL = +0.4V 50 A

Data Format Serial BTC (1)

Input Clock Frequency 16.9 20 MHz

DYNAMIC CHARACTERISTICSTOTAL HARMONIC DISTORTION + N (2) Without MSB AdjustmentsPCM58P:

f = 991Hz (0dB) (3) fS = 176.4kHz(4) 94 92 dB

f = 991Hz (20dB) f S = 176.4kHz 74 72 dBf = 991Hz (60dB) f S = 176.4kHz 40 34 dB

PCM58P-J:f = 991Hz (0dB) f

S= 176.4kHz 96 94 dB

f = 991Hz (20dB) f S = 176.4kHz 80 74 dBf = 991Hz (60dB) f S = 176.4kHz 40 34 dB

PCM58P-Kf = 991Hz (0dB) f S = 176.4kHz 100 96 dBf = 991Hz (20dB) f S = 176.4kHz 82 80 dBf = 991Hz (60dB) f S = 176.4kHz 42 40 dB

TRANSFER CHARACTERISTICSACCURACYGain Error 1 2 %Bipolar Zero Error (5) 10 mVGain Drift 0 C to 70 C 25 ppm/ CBipolar Zero Drift 0 C to 70 C 4 ppm of FSR/ CWarm-up Time 1 Minute

IDLE CHANNEL SNR (6) 20Hz to 20kHz at BPZ (7) +126 dB

POWER SUPPLY REJECTION +72 dB

ANALOG OUTPUTOutput Range 0.98 1.0 1.02 mAOutput Impedance 1.2 k Internal Feedback 3 k Settling Time 1mA Step 200 nsGlitch Energy Meets all THD+N Specs Without External Deglitching

POWER SUPPLY REQUIREMENTS+VCC Supply Voltage +4.75 +5.00 +5.50 V

VCC Supply Voltage 10.8 12.0 13.2 VSupply Current +I CC +VCC = +5.0V +10 mA

ICC VCC = 12.0V 30 mAPower Dissipation 410 mW

TEMPERATURE RANGESpecification 0 +70 COperating 30 +70 CStorage 60 +100 C

NOTES: (1) Binary Twos Complement coding. (2) Ratio of (Distortion RMS + Noise RMS) / Signal RMS. (3) D/A converter output frequency/signal level. (4) D/A convertersample frequency (4 x 44.1kHz; 4 times oversampling). (5) Offset error at bipolar zero. (6) Measured using an OPA27 and 10k feedback and an A-weighted filter.(7) Bipolar Zero.

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumesno responsibility for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to changewithout notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrantany BURR-BROWN product for use in life support devices and/or systems.

8/12/2019 PCM58P-K

3/6

PCM58P3

PCM58P -XBasic Model Number

P: PlasticPerformance Grade Code

PIN DESCRIPTION MNEMONIC

P1 Decoupling Capacitor CAPP2 +Vcc Voltage Supply +V CCP3 Decoupling Capacitor CAPP4 Decoupling Capacitor CAPP5 Bipolar Offset Point BPOP6 Current DAC I OUT IOUTP7 Feedback Resistor R F1P8 Analog Common ACOMP9 V CC Voltage Supply V CC

P10 Feedback Resistor R F2P11 Digital Common DCOMP12 No Connection NCP13 +V CC Voltage Supply +V CCP14 No Connection NCP15 Decoupling Capacitor CAPP16 Clock CLKP17 DAC Latch Enable LEP18 No Connection NCP19 Data Input DATAP20 V CC Voltage Supply V CCP21 No Connection NCP22 No Connection NCP23 No Connection NCP24 Bit 4 Adjust B4 ADJP25 Bit 3 Adjust B3 ADJP26 Bit 2 Adjust B2 ADJP27 Bit 1 (MSB) Adjust B1 ADJP28 Bit Adjust V POT VPOT

PIN ASSIGNMENTS

VCC Supply Voltages ................................................................ +6V; 16VInput Logic Voltage ................................................................. 1V to +V CCStorage Temperature ...................................................... 60 C to +100 CLead Temperature (soldering, 10s) ................................................ +300 C

ABSOLUTE MAXIMUM RATINGS

ORDERING INFORMATION

PACKAGE INFORMATION (1)

PACKAGE DRAWINGMODEL PACKAGE NUMBER

PCM58P 28-Pin Plastic DIP 215PCM58P, J 28-Pin Plastic DIP 215PCM58P, K 28-Pin Plastic DIP 215

NOTE: (1) For detailed drawing and dimension table, please see end of datasheet, or Appendix D of Burr-Brown IC Data Book.

FIGURE 1. PCM58P Production THD+N Test Setup.

DISCUSSION OFSPECIFICATIONSTOTAL HARMONIC DISTORTION + NOISEThe key specification for the PCM58P is total harmonicdistortion plus noise. Digital data words are read into thePCM58P at four times the standard audio sampling frequencyof 44.1kHz or 176.4kHz such that a sinewave output of 991Hzis realized. For production testing, the output of the DACgoes to a programmable gain amplifier to provide gain at

lower signal output test levels and then through a 20kHzlow pass filter before being fed into an analog type distortionanalyzer. Figure 1 shows a block diagram of the productionTHD+N test setup.

ProgrammableGain Amp

0dB to 60dB

Binary

Counter

Clock

0

20

40

60

80

100

120

Use 400Hz High-PassFilter and 30kHzLow-Pass FilterMeter Settings

(Shiba Soku Model725 or Equivalent)

Digital Code

(EPROM)

DistortionAnalyzer

Parallel-to-Serial

Conversion

TimingLogic

Sampling Rate = 44.1kHz X 4 (176.4kHz)Output Frequency = 991Hz

Low-PassFilter

(Toko APQ-25or Equivalent)

DUT

(PCM58P)

LOW-PASS FILTERCHARACTERISTIC

Frequency (Hz)

Latch Enable

1 10 1 10 2 10 3 10 4 10 5

G a

i n ( d B )

8/12/2019 PCM58P-K

4/6

8/12/2019 PCM58P-K

5/6

8/12/2019 PCM58P-K

6/6

PCM58P

6

MSB ADJUSTMENT CIRCUITRYWith the optional bit adjustment circuitry shown in Figure4, even greater performance can be realized by reducing thefirst four major bit carry output errors to zero. The mostimportant adjustment for low level outputs would be the stepbetween BPZ (bipolar zero; MSB on, all other bits off) andthe code, which is one LSB less than BPZ (MSB off, allother bits on), since every crossing of zero would go through

this bipolar major carry point. This MSB bit adjustment wouldbe made by outputing a very low level signal sine wave andcalibrating the 100k potentiometer circuit connected to P28and P27 while monitoring the THD+N of the PCM58P untilpeak performance is observed.

Bits 2 through 4 can also be adjusted if desired to obtainoptimum full-scale output THD+N performance. An addi-tional 100k potentiometer adjustment circuit is required forevery additional bit to be adjusted. If bit adjustment is notperformed, the respective pins on the PCM58P should beleft open.

Once bit adjustment is performed, the reference voltage atVPOT (P28) will track the internal reference, insuring thatthe THD+N performance of the PCM58P will remain unaf-fected by external temperature changes.