AD203SN_16 Datasheet, PDF (1/14 Pages) Analog Devices – Rugged, Military Temperature Range, 1 0 kHz Bandwidth Isolation Amplifier

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WDEVICES
Rugged, Military Temperature Range,
10 kHz Bandwidth Isolation Amplifier
AD203SN I
FEATURES
Rugged Design:
C
Environmental Test Methods
1004 (Moisture Resistance)
1010 Condition B (Temperature Cycling,
-55°C to +125°C)
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
Characterized to the Full Military Temperature Range
-55°C to +125°C Rated Performance
10 kHz Full Power Bandwidth
Low Nonlinearity: ±0.025% max
Wide Output Range: ±10 V min (Into a 2.5 k!l Load)
High CMV Isolation: 1500 V RMS Continuous
Isolated Power: ±15 V DC@ ±5 mA
Small Size: 2.23"x0.83"x0.65"
56.6 mmx21.1 mmx16.5 mm
Uncommitted Input Amplifier
Two-Port Isolation Through Transformer Coupling
ISOLATION AMPLIFIERS
Provide Galvanic Isolation Between the Input and
Output Stages
Eliminate Ground Loops
Reject High Common Mode Voltages and Noise
Protect Sensitive Electronic Signal Processing Systems
from Transient and/or Fault Voltages
APPLICATIONS INCLUDE
Engine Monitoring and Control
Mobile Multichannel Data Acquisition Systems
Instrumentation and/or Control Signal Isolation
Current Shunt Measurements
High Voltage Instrumentation Amplifier
FUNCTIONAL BLOCK DIAGRAM
MODULATOR
DEMODULATOR
INPUT PORT~^'I~OUTPUT PORT
The AD203SN provides total galvanic isolation between the in-
put and output stages of the isolation amplifier, including the
power supplies, through the use of internal transformer cou-
pling. The functionally complete design of the AD203SN, pow-
ered by a single + 15 V de supply, eliminates the need for an
external de/de converter. This permits the designer to minimize
the necessary circuit overhead and consequently reduce the over-
all design and component costs. Furthermore, the power con-
sumption, nonlinearity and drift characteristics of transformer
coupled devices are vastly superior to those achievable with
other isolation technologies, without sacrificing bandwidth or
noise performance. Finally, the AD203SN will maintain its high
operating performance even under sustained common mode
stress.
The design of the AD203SN emphasizes maximum flexibility
and ease of use in a broad range of applications where signals
must be measured or transmitted under high CMV conditions.
The AD203SN has a ± 10 V output range, an uncommitted in-
put amplifier, an output buffer, a 10 kHz full power bandwidth
and a front-end isolated power supply of ± 15 V de (CT; ± 5 mA.
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.