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Burr-Brown Corporation

ISO809 Datasheet Preview

ISO809 Datasheet

Isolated 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTER

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®
ISO809
ISO809
Isolated 16-Bit Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 100kHz SAMPLING RATE
q 1500Vrms ISOLATION CONTINUOUS
q 10µS CONVERSION TIME
q 16-BIT SERIAL OUTPUT
q SINGLE +5V SUPPLY
q 28-PIN 0.6" PLASTIC DIP
APPLICATIONS
q INDUSTRIAL PROCESS CONTROL
q PC-BASED DATA ACQUISITION TEST
EQUIPMENT
DESCRIPTION
The ISO809 is a low-power isolated sampling ADC
using state-of-the-art CMOS structures and high volt-
age capacitors. The ISO809 contains a complete 16-bit
capacitor based SAR, ADC with S/H, clock, refer-
ence, µP interface, serial out and galvanic isolation.
Laser-trimmed scaling resistors provide standard
industrial input ranges including ±10V, ±5V, 0-5V,
0-4V. They are available in 28-pin 0.6" wide plastic
DIP and are specified over the industrial temperature
range of –40°C to +85°C.
Isolation
Barrier
R1IN
R2IN
R3IN
CAP
20k
10k
5k20k
REF
Successive Approximation Register and Control Logic
Clock
Internal
+2.5V Ref
4k
Serial
Data
Out
SB/BTC
R/C
BUSY
Data Clock
Serial Data
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
©1996 Burr-Brown Corporation
PDS-1321B
Printed in U.S.A. August, 1997




Burr-Brown Corporation

ISO809 Datasheet Preview

ISO809 Datasheet

Isolated 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTER

No Preview Available !

SPECIFICATIONS
ELECTRICAL
At TA = –40°C to +85°C, fS = 100kHz, VDIG = VANA = +5V, using internal reference and fixed resistors shown in Figure 3, unless otherwise specified.
ISO809P
PARAMETER
CONDITIONS
MIN TYP
MAX
UNITS
ISOLATION PARAMETERS
Rated Voltage, Continuous
Partial Discharge, 100% Test(8)
Creepage Distance (External) DIP = “P” Package
Internal Isolation Distance
Barrier Impedance
Leakage Current(9)
RESOLUTION
ANALOG INPUT
Voltage Ranges
Impedance
Capacitance
THROUGHPUT SPEED
Conversion Time
Complete Cycle
Throughput Rate
DC ACCURACY
Integral Linearity Error
Differential Linearity Error
No Missing Codes
Transition Noise(2)
Full Scale Error(3,4)
Full Scale Error Drift
Full Scale Error Drift
Bipolar Zero Error(3)
Bipolar Zero Error Drift
Unipolar Zero Error(3)
Unipolar Zero Error Drift
Power Supply Sensitivity (VDIG = VANA = VD)
AC ACCURACY
Spurious-Free Dynamic Range
Total Harmonic Distortion
Signal-to-(Noise+Distortion)
Signal-to-Noise
Full-Power Bandwidth(6)
SAMPLING DYNAMICS
Aperture Delay
Aperture Jitter
Overvoltage Recovery(7)
REFERENCE
Internal Reference Voltage
Internal Reference Source Current
(Must use external buffer)
External Reference Voltage Range
for Specified Linearity
External Reference Current Drain
DIGITAL INPUTS
Logic Levels
VIL
VIH
IIL
IIH
DIGITAL OUTPUTS
Data Coding
VOL
VOH
50Hz
1s, 5pC
240Vrms, 60Hz
240Vrms, 50Hz
Acquire and Convert
Ext. 2.5000V Ref
Bipolar Ranges
Bipolar Ranges
Unipolar Ranges
Unipolar Ranges
+4.75V < VD < +5.25V
fIN = 45kHz ±10V
fIN = 45kHz ±10V
fIN = 45kHz ±10V
fIN = 45kHz ±10V
No Load
Ext. 2.5000V Ref
VIL = 0V
VIH = 5V
ISINK = 1.6mA
ISOURCE = 500µA
1500
2500
16
0.10
>1013 II 15
1.2
1.0
16
±10V, 0V to 5V, etc. (See Table I)
See Table I
35
7.6
100
8
10
±4
±4
15
1.3
±0.5
±7
±2
±10
±2
3
±2
8
100
–100
88
88
250
40
Sufficient to meet AC specs
150
2.48
2.5
1
2.3 2.5
2.52
2.7
100
–0.3
VD –1.0
1.0
VD +0.3V
±10
±10
Binary Two’s Complement or Straight Binary
±0.4
+4
Vrms
Vrms
mm
mm
II pF
µArms
µArms
Bits
pF
µs
µs
kHz
LSB(1)
LSB
LSB
%
ppm/°C
ppm/°C
mV
ppm/°C
mV
ppm/°C
LSB
dB(5)
dB
dB
dB
kHz
ns
ns
ns
V
µA
V
µA
V
V
µA
µA
V
V
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.
®
ISO809
2


Part Number ISO809
Description Isolated 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
Maker Burr-Brown Corporation
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ISO809 Datasheet PDF






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