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Part: ISO807
Category:
Description:
Company: Burr-Brown (acquired by Texas Instruments, Inc.)
Datasheet: Download ISO807 datasheet File size : 1191 kB
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Datasheet text preview:
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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.
APPLICATIONS
q INDUSTRIAL PROCESS CONTROL q PC-BASED DATA ACQUISITION TEST EQUIPMENT
Isolation Barrier
Successive Approximation Register and Control Logic
R/C
40k R1IN
Clock
BUSY 10k R2IN CAP Internal +2.5V Ref 6k REF 40k 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
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 I IH 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 ±0.5 CONDITIONS MIN TYP MAX UNITS
50Hz 1s, 5pC
1500 2500 16 0.10 >1013 II 15
240Vrms, 60Hz 240Vrms, 50Hz
1.7 1.4 16
Vrms Vrms mm mm II pF µA r m s µA r m s Bit V pF µs µs kHz LSB(1) LSB Bits LSB % ppm/° C ppm/° C mV ppm/° C mV ppm/° C LSB dB(5) dB dB dB kHz ns ps ns
Acquire and Convert
Ext. 2.5000V Ref ±10V Range ±10V Range 0V to 5V, 0V to 4V Ranges 0V to 5V, 0V to 4V Ranges +4.75V < VS < +5.25V fIN fIN fIN fIN = = = = 1kHz, 1kHz, 1kHz, 1kHz, ±10V ±10V ±10V ±10V
±10 ±3 ±8
100 100 88 88 130 40 20 750 2.5 1 8 2.5 2.52
V µA ppm/° C V µA
2.3 Ext. 2.5000V Ref
2.7 100
0.3 VD 1.0 VIL = 0V VIH = 5V
1.0 VD +0.3V ±10 ±10
V V µA µA
ISINK = 1.6mA ISOURCE = 500µA
Binary Two's Complement or Straight Binary 0.4 +4
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.
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ISO807
2
SPECIFICATIONS (CONT)
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 POWER SUPPLIES Specified Performance VDIG1 VANA VDIG2 IDIG1 I ANA IDIG2 Power Dissipation TEMPERATURE RANGE Specified Performance Storage Thermal Resistance, JA Plastic DIP CONDITIONS MIN TYP MAX UNITS
Must be VANA
+4.75 +4.75 +4.75
+5 +5 4.2 5.0 10.8 125
+5.25 +5.25 +5.25
VANA = VDIG = 5V, FS = 40kHz 40 65
V V V mA mA mA mW °C °C °C/W
+85 +150 75
NOTES: (1) LSB means Least Significant Bit. One LSB for the ±10V input range is 3.05µV. (2) Typical rms noise at worst case transition. (3) As measured with fixed resistors shown in Figure 7b. Adjustable to zero with external potentiometer. (4) Full scale error is the worst case of Full Scale or +Full Scale untrimmed deviation from ideal first and last code transitions, divided by the transition voltage (not divided by the full-scale range) and includes the effect of offset error. (5) All specifications in dB are referred to a full-scale input. (6) Usable Bandwidth defined as Full-Scale input frequency at which Signal-to-(Noise + Distortion) degrades to 60dB. (7) Recovers to specified performance after 2 x FS input overvoltage. (8) All devices receive a 1s test. Failure criterion is 5 pulses of 5pC. (9) Tested at 2500Vrms, 50Hz limit 10µA.
ABSOLUTE MAXIMUM RATINGS
Analog Inputs: R1IN R2IN CAP REF ......... ±25V ......... ±25V ... VANA +0.3V to AGND2 0.3V ........ Indefinite Short to AGND2, Momentary Short to VANA Ground Voltage Differences: DGND and AGND1 ..... ±0.3V DGND, AGND, and GNDISO .. 1563Vrms VANA ............. 7V VDIG to VANA ..... +0.3V VDIG ........ 7V Digital Inputs ..... 0.3V to VDIG +0.3V Maximum Junction Temperature ......... +165°C Internal Power Dissipation .... 825mW Lead Temperature (soldering, 10s) ...... +300°C
ELECTROSTATIC DISCHARGE SENSITIVITY
Electrostatic discharge can cause damage ranging from performance degradation to complete device failure. BurrBrown Corporation recommends that all integrated circuits be handled and stored using appropriate ESD protection methods. 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 published specifications.
PACKAGE INFORMATION
PRODUCT ISO807P PACKAGE Plastic DIP PACKAGE DRAWING NUMBER(1) 215-1
NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book.
ORDERING INFORMATION
PRODUCT ISO807P MAXIMUM INTEGRAL LINEARITY ERROR (LSB) ±3 TYPICAL SIGNAL-TO(NOISE + DISTORTION) RATIO (dB) 83 SPECIFICATION TEMPERATURE RANGE 40°C to +85°C PACKAGE Plastic DIP
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ISO807
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