Document
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ISO8 07
ISO807
Isolated 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 1500Vrms ISOLATION CONTINUOUS q 25µS CONVERSION TIME q 16-BIT SERIAL OUTPUT q SINGLE +5V SUPPLY q 28-PIN 0.6" PLASTIC DIP
DESCRIPTION
The ISO807 is a low-power isolated sampling ADC using state-of-the-art CMOS structures and high voltage capacitors. The ISO807 contains a complete 16-bit capacitor based SAR, ADC with S/H, clock, reference, 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.
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APPLICATIONS
q INDUSTRIAL PROCESS CONTROL q PC-BASED DATA ACQUISITION TEST EQUIPMENT
Isolation Barrier
Successive Approximation Register and Control Logic
R/C
40kΩ R1IN
Clock
BUSY 10kΩ R2IN CAP Internal +2.5V Ref 6kΩ REF 40kΩ Serial Data Out Data Clock
Serial Data
SB/BTC
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-1320B
Printed in U.S.A. August, 1997
Datasheet pdf - http://www.DataSheet4U.co.kr/
SPECIFICATIONS
ELECTRICAL
At TA = –40°C to +85°C, fS = 40kHz, VDIG = VANA = +5V, using internal reference and fixed resistors shown in Figure 3b, unless otherwise specified. ISO807P PARAMETER 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 = VS) AC ACCURACY Spurious-Free Dynamic Range Total Harmonic Distortion Signal-to-(Noise+Distortion) Signal-to-Noise Useable Bandwidth(6) SAMPLING DYNAMICS Aperture Delay Aperture Jitter Overvoltage Recovery(7) REFERENCE Internal Reference Voltage Internal Reference Source Current (Must use external buffer.) Internal Reference Drift 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 No Load 2.48 ±10, 0 to +5, 0 to +4 (See Table II) 35 20 25 40 ±3 +3, –2 15 0.8 ±7 ±0.5 ±0.5 ±0.5
w w w . D a t a S h e e t . n e
CONDITIONS
MIN
TYP
MAX
UNITS
50Hz 1s, 5pC
1500 2500.