Rugged, Military Temperature Range, r.ANALOG WDEVICES 1 0 kHz Bandwidth Isolation Amplifier AD203SN I FEATURES FUNCTIONAL BLOCK DIAGRAM Rugged Design: C Environmental Test Methods 1004 (Moisture Resistance) 1010 Condition B (Temperature Cycling, -55C to +125C) MODULATOR DEMODULATOR 2002 Condition B (Mechanical Shock 1,500 g for 0.5 ms) 2004 (Lead Integrity) 2007 Condition A (Variable Frequency Vibration 20g) 2015 (Resistance to Solvents) Reliable Design: Conforms to Stringent Quality and Reliability Standards I INPUT PORT~ ~OUTPUT PORT Characterized to the Full Military Temperature Range -55C to +125C Rated Performance 10 kHz Full Power Bandwidth Low Nonlinearity: 0.025% max The AD203SN provides total galvanic isolation between the in Wide Output Range: 10 V min (Into a 2.5 k l Load) put and output stages of the isolation amplifier, including the High CMV Isolation: 1500 V RMS Continuous power supplies, through the use of internal transformer cou Isolated Power: 15 V DC 5 mA pling. The functionally complete design of the AD203SN, pow Small Size: 2.23 x0.83 x0.65 ered by a single + 15 V de supply, eliminates the need for an 56.6 mmx21.1 mmx16.5 mm external de/de converter. This permits the designer to minimize Uncommitted Input Amplifier the necessary circuit overhead and consequently reduce the over Two-Port Isolation Through Transformer Coupling all design and component costs. Furthermore, the power con sumption, nonlinearity and drift characteristics of transformer ISOLATION AMPLIFIERS coupled devices are vastly superior to those achievable with Provide Galvanic Isolation Between the Input and other isolation technologies, without sacrificing bandwidth or Output Stages noise performance. Finally, the AD203SN will maintain its high Eliminate Ground Loops operating performance even under sustained common mode Reject High Common Mode Voltages and Noise stress. Protect Sensitive Electronic Signal Processing Systems The design of the AD203SN emphasizes maximum flexibility from Transient and/or Fault Voltages and ease of use in a broad range of applications where signals APPLICATIONS INCLUDE must be measured or transmitted under high CMV conditions. Engine Monitoring and Control The AD203SN has a 10 V output range, an uncommitted in Mobile Multichannel Data Acquisition Systems put amplifier, an output buffer, a 10 kHz full power bandwidth Instrumentation and/or Control Signal Isolation and a front-end isolated power supply of 15 V de (CT 5 mA. Current Shunt Measurements High Voltage Instrumentation Amplifier GENERAL DESCRIPTION The AD203SN is designed and built expressly for use in hostile operating environments. The AD203SN is also an integral mem ber of Analog Devices AD200 Series of low cost, high perfor mance, transformer coupled isolation amplifiers. Technological innovations in circuit design, transformer construction, surface mount components and assembly automation have resulted in a rugged, economical, military temperature range isolator that either retains or improves upon the key performance specifica tions of the AD202/AD204 line. - AD203SN-SPECIFICAJIQNS (typical +25C, Vs= +15 V de ~ iless otherwise noted) , GAIN I Range 1 VN-100 VN Error 1% typ (4% max) 1 vs. Temperature -55C to + 125C 50 ppm/C -55C to +25C 100 ppm/C -40C to + 25C 80 ppm/C - 25C to + 25C 60 ppm/C 5 ppm/C + 25C to + 125C vs. Time 50 ppm/1000 hours vs. Supply Voltage 0.005%N 2 Nonlinearity , G= 1 VN, 10 V Output Swing 0.012% (0.025% max) INPUT VOLTAGE RATINGS Linear Differential Range lOV Max CMV Input to Output AC, 60 Hz, Continuous 1500 V rms Continuous (ac and de) 2000 V peak Common Mode Rejection (CMR) 60 Hz Rs . S 100 1 (HI & LO Inputs), G = 1 VN 106dB G = 100 VN 120dB Rs . S 1 k 1 (Input, HI, LO or Both), G = 1-100 VN 96dB (min) Leakage Current, Input to Output 240 V rms, 60 Hz 4.0A rms (max) INPUT IMPEDANCE 1012 n Differential (G = 1 VN) Common Mode 2 G 1ll4.5 pF INPUT BIAS CURRENT 30 pA Initial + 25C Current + 125C 30 nA INPUT DIFFERENCE CURRENT Initial + 25C 5 pA Current + 125C 5 nA INPUT NOISE Voltage, 0.1 Hz to 100 Hz 4 V p-p Voltage, Frequency> 200 Hz 50 nV/VHz FREQUENCY RESPONSE Bandwidth (VoUT . S 20 V p--p, G = 1-100 VN) 10 kHz Slew Rate 0.5 V/s Settling Time to 0.10% 160 s OFFSET VOLTAGE, REFERRED TO INPUT (RTI) Initial + 25C (Adjustable to Zero) (5 + 25/G) mV (max) vs. Temperature (-55C to + 125C) (6 + 100/G) VlC 3 RATED OUTPUT Voltage (Out HI to Out LO) RL = 5.0 k 1 10 V (min) Current 4mA 4 Maximum Capacitive Load 270 pF Output Resistance 0.2 n Output Ripple, 100 kHz Bandwidth 15 mV p-p 5 kHz Bandwidth 0.7 mV rms 5 ISOLATED POWER OUTPUT Voltage, No Load 15 v Accuracy 5% Current (Either Output) 5mA Re~ulation, No Load to Full Load 5% Ripple, 100 kHz Bandwidth, Full Load llO mV p--p . POWER SUPPLY Voltage, Rated Performance + 15 V de (5%) 6 Voltage, Operating Performance + 12 V de to + 16 V de Current, No Load (Vs= +15 V de) 20mA -2- Rev. B