PCM55

Manufacturer Part NumberPCM55
Description16-Bit Monolithic DIGITAL-TO-ANALOG CONVERTERS
ManufacturerBURR-BROWN [Burr-Brown Corporation]
PCM55 datasheet
 


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®
DESIGNED FOR AUDIO
DIGITAL-TO-ANALOG CONVERTERS
FEATURES
PARALLEL INPUT FORMAT
16-BIT RESOLUTION
15-BIT MONOTONICITY (typ)
–92dB TOTAL HARMONIC DISTORTION
(K Grade)
3 s SETTLING TIME (Voltage Out)
DESCRIPTION
The PCM54 and PCM55 family of converters are
parallel input, fully monotonic, 16-bit digital-to-ana-
log converters that are designed and specified for
digital audio applications. These devices employ ul-
tra-stable nichrome (NiCr) thin-film resistors to pro-
vide monotonicity, low distortion, and low differential
linearity error (especially around bipolar zero) over
long periods of time and over the full operating
temperature.
These converters are completely self-contained with a
stable, low noise, internal, zener voltage reference;
high speed current switches; a resistor ladder
network; and a fast settling, low noise output opera-
tional amplifier all on a single monolithic chip. The
converters are operated using two power supplies that
Parallel
Digital
Input
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
©
1985 Burr-Brown Corporation
16-Bit Monolithic
96dB DYNAMIC RANGE
3V or 1mA AUDIO OUTPUT
OPERATES ON 5V (PCM55) TO 12V
(PCM54) SUPPLIES
28-PIN DIP (PCM54)
24-LEAD SOIC (PCM55)
can range from 5V (PCM55) to 12V (PCM54).
Power dissipation with 5V supplies is typically less
than 200mW. Also included is a provision for exter-
nal adjustment of the MSB error (differential linearity
error at bipolar zero, PCM54 only) to further improve
Total Harmonic Distortion (THD) specifications if
desired.
A current output (I
output typically settles to within 0.006% of FSR
final value in 350ns (in response to a full-scale change
in the digital input code).
The PCM54 is packaged in 28-pin plastic DIP pack-
age. The PCM55 is available in a 24-lead plastic mini-
flatpak.
Reference
Voltage
R
F
16-Bit Ladder
Resistor Network
and
Audio Output
Current Switches
Output
Operational
Amplifier
PDS-619B
PCM54
PCM55
) wiring option is provided. This
OUT
(Voltage)
Printed in U.S.A. August, 1998

PCM55 Summary of contents

  • Page 1

    ... A current output (I output typically settles to within 0.006% of FSR final value in 350ns (in response to a full-scale change in the digital input code). The PCM54 is packaged in 28-pin plastic DIP pack- age. The PCM55 is available in a 24-lead plastic mini- flatpak. Reference Voltage R F 16-Bit Ladder ...

  • Page 2

    ... 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 warrant any BURR-BROWN product for use in life support devices and/or systems. ® PCM54/55 PCM54HP, PCM55HP PCM54JP, PCM55JP MIN TYP MAX MIN ...

  • Page 3

    ... BPO + MSB Adjust –V CC ABSOLUTE MAXIMUM RATINGS DC Supply Voltage ...................................................................... 18VDC Input Logic Voltage ............................................................... –1V to +5.5V Power Dissipation .................................. PCM54 800mW, PCM55 400mW PACKAGE DRAWING Storage Temperature ...................................................... – +100 C (1) NUMBER Lead Temperature, (soldering, 10s) .............................................. +300 C 215 215 215 ORDERING INFORMATION 178 ...

  • Page 4

    ... DLE at bipolar zero (at the “major carry”) can result in (+FSR/2) –1LSB audible crossover distortion for low level output signals. Initial DLE on the PCM54 and PCM55 is factory-trimmed to typically 0.001% of FSR. This error is adjustable to zero using the circuit shown in the connection diagram (PCM54 only) ...

  • Page 5

    ... Most of the offset and gain drift with temperature or time is due to the drift of the internal reference zener diode. The PCM54 and PCM55 are designed so that these drifts are in opposite directions so that the bipolar zero voltage is virtually unaffected by variations in the reference voltage ...

  • Page 6

    ... MSB ERROR ADJUSTMENT PROCEDURE (OPTIONAL) The MSB error of the PCM54 and PCM55 can be adjusted to make the differential linearity error (DLE) at BPZ essen- tially zero. This is important when the signal output levels are very low because zero crossing noise (DLE at BPZ) becomes very significant when compared to the small code changes occurring in the LSB portion of the converter ...

  • Page 7

    INSTALLATION CONSIDERATIONS If the optional external MSB error circuitry is used (PCM54), a potentiometer with adequate resolution and a TCR of 100ppm less is required. Also, extra care must be taken to insure that no leakage path (either ...