ADA4700-1 Datasheet, PDF (1/10 Pages) Analog Devices – High Voltage, Precision Operational Amplifier

Preliminary Technical Data
FEATURES
Low input offset voltage: ≤0.2 mV typical
High output current drive: 20mA, 50 mA
Wide range of operating voltage: ±5 V to ±50 V
Specified at ±5 V, ±24 V, and ±50 V
High slew rate: 20 V/μs typical
High gain bandwidth product: ≥3 MHz typical
On-board thermal shutdown at 165°C
Ambient temperature range of −40°C to +85°C
Low input bias current: IBIAS ≤ 15 nA typical
APPLICATIONS
Automated and bench top test equipment
High voltage regulators and power amplifiers
Data acquisition and signal conditioning
Piezo drivers and predrivers
General-purpose current sensing
GENERAL DESCRIPTION
The ADA4700-1 is a high voltage precision operational amplifier
with a wide operating voltage (±5 V to ±50 V) and relatively
high output current drive available as a single op amp in an
SOIC package. It combines low power consumption, high
bandwidth, and a slew rate with unity-gain stability and phase
inversion free performance. The ability to swing near rail-to-rail
at the output enables designers to maximize signal-to-noise ratios
(SNRs).
The ADA4700-1 is designed for applications requiring both ac and
precision dc performance, making the ADA4700-1 useful in a
wide variety of applications, including high voltage test equipment
and instrumentation, high voltage regulators and power amplifiers,
power supply control and protection, and as an amplifier or buffer
for transducers with wide output ranges. It is particularly well
suited for high intensity LED testing applications where it provides
highly accurate voltage and current feedback as well as a predriver
to provide accurate voltage and/or current sourcing stimulus to
the LED string under test.
High Voltage, Precision
Operational Amplifier
ADA4700-1
PIN CONFIGURATION
NC 1 _ADA4700-1 8 NC
–IN 2
7 V+
+IN 3
V– ⁴
TOP VIEW
(Not to Scale)
6 OUT
5 _NC
NOTES
1. NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
2. THE EXPOSED PAD MUST BE
CONNECTED TO V–.
Figure 1.
The ADA4700-1 is specified over the industrial temperature
range of −40°C to +85°C and includes an on-board thermal
shutdown at 165°C internal junction temperature as well as an
internal current limit for safety. The ADA4700-1 is available in
a thermally enhanced, 8-lead SOIC package that uses a small
exposed metal pad on the bottom of the package to allow the
customer to heat sink the part to the printed circuit board (PCB).
For proper operation, the exposed pad must be connected to V−.
Rev. PrB
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