Burr Brown PCM1801U, PCM1801U-2K Datasheet

49%
FPO

PCM1801

®

FEATURES

● DUAL 16-BIT MONOLITHIC ∆Σ ADC

● SINGLE-ENDED VOLTAGE INPUT

● 64X OVERSAMPLING DECIMATION FILTER:

Passband Ripple: ±0.05dB
Stopband Attenuation: –65dB

● ANALOG PERFORMANCE:

THD+N: –88dB (typ)
SNR: 93dB (typ)
Dynamic Range: 93dB (typ)
Internal High-Pass Filter

● PCM AUDIO INTERFACE: Left Justified,

I2S

● SAMPLING RATE: 4kHz to 48kHz

● SYSTEM CLOCK: 256fS, 384fS, or 512f

S

● SINGLE +5V POWER SUPPLY

● SMALL SO-14 PACKAGE

DESCRIPTION

PCM1801 is a low cost, single chip stereo analog-to­digital converter with single-ended analog voltage
inputs. The PCM1801 uses a delta-sigma modulator
with 64x oversampling, a digital decimation filter, and
a serial interface which supports Slave mode operation
and two data formats. The PCM1801 is suitable for a
wide variety of cost-sensitive consumer applications
where good performance is required.

© 1999 Burr-Brown Corporation PDS-1554B Printed in U.S.A. May, 2000

16-Bit, Stereo, Audio

ANALOG-TO-DIGITAL CONVERTER

For most current data sheet and other product

information, visit www.burr-brown.com

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone]

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

PCM1801

Clock/Timing Control

BYPAS

V

CC

V

DD

AGND

Reference

Format
Control

FMT

SCKI

Serial Data

Interface

DOUT

BCK

LRCK

VINL

V

REF

1

V

REF

2

V

IN

R

Power Supply

DGND

(–)

(+)

x1/64

Decimation

and

High-Pass Filter

5th-Order

∆Σ

Modulator

5th-Order

∆Σ

Modulator

PCM1801

(+)

(–)

Single-Ended-

to-Differential

Converter

Single-Ended-

to-Differential

Converter

®

2

PCM1801

SPECIFICATIONS

All specifications at +25°C, +VDD = +V

CC

= +5V, fS = 44.1kHz, and 16-bit data, SYSCLK = 384fS, unless otherwise noted.

PCM1801U

PARAMETER CONDITIONS MIN TYP MAX UNITS
RESOLUTION 16 Bits
DIGITAL INPUT/OUTPUT

Input Logic Level:
V

IH

(1)

2.0 V

V

IL

(1)

0.8 V

Input Logic Current:

I

IN

(2)

±1 µA

I

IN

(3)

+100 µA

Output Logic Level:

V

OH

(4)

IOH = –1.6mA 4.5 V

V

OL

(4)

IOL = +3.2mA 0.5 V
Sampling Frequency 4 44.1 48 kHz
System Clock Frequency 256f

S

1.024 11.2896 12.2880 MHz

384f

S

1.536 16.9344 18.4320 MHz

512f

S

2.024 22.5792 24.5760 MHz

DC ACCURACY

Gain Mismatch Channel-to-Channel ±1.0 ±2.5 % of FSR
Gain Error ±2.0 ±5.0 % of FSR
Gain Drift ±20

ppm of FSR/°C
Bipolar Zero Error High-Pass Filter Bypass ±2.0 % of FSR
Bipolar Zero Drift High-Pass Filter Bypass ±20

ppm of FSR/°C

DYNAMIC PERFORMANCE

(5)

THD+N at FS (–0.5dB) –88 –80 dB
THD+N at –60dB –90 dB
Dynamic Range EIAJ, A-weighted 90 93 dB
Signal-To-Noise Ratio EIAJ, A-weighted 90 93 dB
Channel Separation 88 91 dB

ANALOG INPUT

Input Range FS (V

IN

= 0dB) 2.828 Vp-p
Center Voltage 2.1 V
Input Impedance 30 kΩ
Anti-Aliasing Filter Frequency Response –3dB 170 kHz

DIGITAL FILTER PERFORMANCE

Passband 0.454f

S

Hz

Stopband 0.583f

S

Hz
Passband Ripple ±0.05 dB
Stopband Attenuation –65 dB
Delay Time (Latency) 17.4/f

S

sec

High Pass Frequency Response –3dB 0.019f

S

mHz

POWER SUPPLY REQUIREMENTS

Voltage Range +V

CC

+4.5 +5.0 +5.5 VDC

+V

DD

+4.5 +5.0 +5.5 VDC

Supply Current

(6)

+VCC = +VDD = +5V 18 25 mA

Power Dissipation +V

CC

= +VDD = +5V 90 125 mW

TEMPERATURE RANGE

Operation –25 +85 °C
Storage –55 +125 °C
Thermal Resistance,

θ

JA

100 °C/W

NOTES: (1) Pins 5, 6, 7, 9, and 10 (SCKI, BCK, LRCK, BYPAS, FMT). (2) Pins 5, 6, 7 (SCKI, BCK, LRCK) Schmitt-Trigger input. (3) Pins 9, 10 (BYPAS, FMT)
Schmitt-Trigger input with 100kΩ typical pull-down resistor). (4) Pin 8 (DOUT). (5) f

IN

= 1kHz, using Audio Precisions System II, rms Mode with 20kHz LPF

and 400Hz HPF enabled. (6) No load on DOUT (pin 8).

®

3 PCM1801

PIN CONFIGURATION

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no
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 change without 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 warrant any BURR-BROWN
product for use in life support devices and/or systems.

PIN NAME I/O DESCRIPTION

1V

IN

L IN Analog Input, Lch.

2V

IN

R IN Analog Input, Rch.
3 DGND — Digital Ground
4V

DD

— Digital Power Supply

5 SCKI IN System Clock Input; 256f

S

, 384fS, or 512fS.
6 BCK IN Bit Clock Input
7 LRCK IN Sampling Clock Input
8 DOUT OUT Audio Data Output
9 BYPAS IN HPF Bypass Control

(1)

L: HPF Enabled

H: HPF Disabled

10 FMT IN

Audio Data Format

(1)

L: MSB-First, Left-Justified
H: MSB-First, I

2

S

11 V

CC

— Analog Power Supply
12 AGND — Analog Ground
13 V

REF

2 — Reference 2 Decoupling Capacitor

14 V

REF

1 — Reference 1 Decoupling Capacitor

NOTE: (1) With 100kΩ typical pull-down resistor.

PIN ASSIGNMENTS

Top View SOIC

Supply Voltage: +V

DD, +VCC

.............................................................. +6.5V

Supply Voltage Differences............................................................... ±0.1V

GND Voltage Differences.................................................................. ±0.1V

Digital Input Voltage................................................. –0.3V to (V

DD

+ 0.3V)

Analog Input Voltage................................................ –0.3V to (V

CC

+ 0.3V)

Input Current (any pin except supplies) .......................................... ±10mA

Power Dissipation .......................................................................... 300mW

Operating Temperature Range ......................................... –25°C to +85°C

Storage Temperature...................................................... –55°C to +125°C

Lead Temperature (soldering, 5s).................................................. +260°C

(reflow, 10s)..................................................... +235°C

ABSOLUTE MAXIMUM RATINGS

ELECTROSTATIC
DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.

ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.

PACKAGE SPECIFIED
DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT

PRODUCT PACKAGE NUMBER RANGE MARKING NUMBER

(1)

MEDIA

PCM1801U SO-14 235 –25°C to +85°C PCM1801U PCM1801U Rails

"""""PCM1801U/2K Tape and Reel

NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K indicates 2000 devices per reel). Ordering 2000 pieces
of “PCM1801U/2K” will get a single 2000-piece Tape and Reel.

PACKAGE/ORDERING INFORMATION

VINL
V

IN

R
DGND
V

DD

SCKI
BCK
LRCK

V

REF

1

V

REF

2

AGND

V

CC

FMT

BYPAS

DOUT

1
2
3
4
5
6
7

14
13
12
11
10

9
8

PCM1801U

®

4

PCM1801

BLOCK DIAGRAM

Clock/Timing Control

BYPAS

V

CC

V

DD

AGND

Reference

Format
Control

FMT

SCKI

Serial Data

Interface

DOUT

BCK

LRCK

VINL

V

REF

1

V

REF

2

V

IN

R

Power Supply

DGND

(–)

(+)

x1/64

Decimation

and

High-Pass Filter

5th-Order

∆Σ

Modulator

5th-Order

∆Σ

Modulator

PCM1801

(+)

(–)

Single-Ended-

to-Differential

Converter

Single-Ended-

to-Differential

Converter

ANALOG FRONT-END (Single-Channel)

30kΩ

1kΩ

VINL

V

REF

2

1

13

14

1kΩ

Delta-Sigma

Modulator

(+)

(–)

V

REF

V

REF

1

+

+

1.0µF

4.7µF

+

4.7µF