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Burr-Brown Corporation

PCM1750P Datasheet Preview

PCM1750P Datasheet

Dual CMOS 18-Bit Monolithic Audio ANALOG-TO-DIGITAL CONVERTER

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® PCM1750P
PCM1750U
Dual CMOS 18-Bit Monolithic Audio
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q DUAL 18-BIT LOW-POWER CMOS AUDIO
A/D CONVERTER
q FAST 4.5µs MIN CONVERSION TIME
INCLUDING S/H
q VERY LOW MAX THD+N: –88dB Without
External Adjust
q COMPLETE WITH INTERNAL
REFERENCE AND DUAL S/H FUNCTION
q TWO CO-PHASE SAMPLED, ±2.75V
AUDIO INPUTS
q CAPABLE OF 4X PER CHANNEL
OVERSAMPLING RATE
q RUNS ON ±5V SUPPLIES AND
DISSIPATES 300mW MAX
q COMPACT 28-PIN PLASTIC DIP OR SOIC
DESCRIPTION
The PCM1750 is a low cost, dual 18-bit CMOS
analog-to-digital converter optimized for dynamic sig-
nal applications. The PCM1750 features true co-phased
inputs with an internal sample/hold function for each
channel. The PCM1750 also comes complete with an
internal reference. Total power dissipation is less than
300mW max using ±5V voltage supplies. Low maxi-
mum Total Harmonic Distortion + Noise (–88dB max)
is 100% tested. The very fast PCM1750 is capable
of 4X x audio bandwidth oversampling rates on both
input channels simultaneously, providing greater free-
dom to designers in selecting input anti-aliasing fil-
ters.
PCM1750 outputs serial data in a format that is com-
patible with many digital filter chips and comes pack-
aged in a space saving 28-pin plastic DIP or SOIC.
MSB Adj Left
Offset Adj Left
VIN Left
S OUT Left
SOUT Right
VIN Right
Offset Adj Right
MSB Adj Right
CDAC
S/H Left
CDAC
S/H Right
Reference
Comp
18-Bit SAR
Latch
Latch
Shift Register
Control Logic
Comp
18-Bit SAR
Reference
Clock
Convert
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 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1990 Burr-Brown Corporation
PDS-11084B
PPCrintMed i1n 7U.5S.A0. October, 1993
®




Burr-Brown Corporation

PCM1750P Datasheet Preview

PCM1750P Datasheet

Dual CMOS 18-Bit Monolithic Audio ANALOG-TO-DIGITAL CONVERTER

No Preview Available !

SPECIFICATIONS
ELECTRICAL
At 25°C, and ±VA = ±5.0V; +VD = +5.0V, unless otherwise noted. Where relevant, specifications apply to both left and right input/output channels.
PARAMETER
CONDITIONS
PCM1750P, U
MIN TYP MAX
UNITS
RESOLUTION
DYNAMIC RANGE
THD + N at –60dB Referred to Full Scale
ANALOG INPUT
Input Range
Input Capacitance
Aperture Delay
Aperture Uncertainty (Jitter)
Full Power Input Bandwidth
DIGITAL INPUT/OUTPUT
Logic Family
Logic Level: VIH
VIL
VOH
VOL
Output Data Format
Convert Command
Convert Command Pulse Width
Conversion Time
IIH = ±5µA
IIL = ±5µA
ISOURCE = 1.0mA
ISINK = 3.2mA
Throughput Including Sample/Hold(2)
DYNAMIC CHARACTERISTICS (20Hz to 24kHz; 4X data decimated to 1X)
Signal-to-Noise Ratio(3)
Total Harmonic Distortion + N(7)
fIN = 1kHz (0dB)
fIN = 1kHz (–20dB)
fIN = 1kHz (–60dB)
Channel Separation
ACCURACY
Gain Error
Gain Mismatch
BPZ (Bipolar Zero) Error(8)
BPZ Error Mismatch
BPZ Differential Linearity Error(9)
Linearity Error
Warm-up Time
fs = 192kHz(4); fIN = 1kHz (0dB)(5)
Without External Adjustments
fs = 192kHz
fs = 192kHz
fs = 192kHz
fs = 192kHz; fIN = 1kHz (0dB) and 0V
Channel to Channel
Channel to Channel
DRIFT (With Internal Reference)
Gain
Bipolar Zero
0°C to 70°C
0°C to 70°C
DRIFT (Exclusive of Internal Reference)
Gain
Bipolar Zero
0°C to 70°C
0°C to 70°C
REFERENCE
VREF Output (Pins 19, 24):
Voltage
Current
Impedance
Accuracy
Drift
VREF Input (Pins 18, P25):
Impedance(11)
0°C to 70°C
POWER SUPPLY REJECTION
POWER SUPPLY REQUIREMENTS
±VA Supply Voltage Range
+VD Supply Voltage Range
+IA; +ID Combined Supply Current
–IA Supply Current
Power Dissipation
TEMPERATURE RANGE
Specification
Operating
Storage
% of VIN / % of VSUPPLY (12)
+VA; +VD = +5.0V
–VA = –5.0V
±VA = ±5.0V; +VD = +5.0V
18
+88 +90
±2.75
20
10
50
500
CMOS Compatible
+3.5
–0.3
+VD + 0.3
+1.5
+2.7
+4.7
+0.2
+0.4
Serial, MSB First, BTC(1)
Positive Edge
81
4.5 5.2 20.8
Bits
dB
V
pF
ns
psrms
kHz
V
V
V
V
ns
µs
+88 +90
–90 –88
–70 –68
–30 –28
+96 +108
dB(6)
dB
dB
dB
dB
±2
±0.5
±2
±3
±0.002
±0.003
1
±5
±2.0
%
%
mV
mV
% of FSR(10)
% of FSR
ms
±50 ppm/°C
±10 ppm of FSR/°C
±10 ppm/°C
±3 ppm of FSR/°C
±4.75
+4.75
0
–40
–60
+2.75
±100
0.2
±25
±50
363 || 120
0.03
±5.00
+5.00
+28
–13
210
±5.25
+5.25
300
+70
+85
+100
V
µA
mV
ppm/°C
|| pF
%/%
V
V
mA
mA
mW
°C
°C
°C
NOTES: (1) Binary Two’s Complement coding. (2) The PCM1750 is tested and guaranteed at 5.2µs, however it will operate at 4.5µs. The dynamic performance is not
guaranteed or tested at this conversion rate. (3) Ratio of SignalRMS / (DistortionRMS + NoiseRMS). (4) A/D converter sample frequency (4 x 48kHz; 4X oversampling per
channel). (5) A/D converter input frequency (signal level). (6) Referred to input signal level. (7) Ratio of (DistortionRMS + NoiseRMS) / SignalRMS. (8) Externally adjustable
to zero error. (9) Differential non-linearity error at bipolar major carry input code. Externally adjustable to zero error. (10) Full scale range (5.50V). (11) Refer to equivalent
circuit in Figure 1. (12) Worst case operating condition. Refer to typical performance curves.
®
PCM1750
2


Part Number PCM1750P
Description Dual CMOS 18-Bit Monolithic Audio ANALOG-TO-DIGITAL CONVERTER
Maker Burr-Brown Corporation
Total Page 18 Pages
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