AD623ARM-REEL7 Analog Devices Inc, AD623ARM-REEL7 Datasheet - Page 16
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AD623ARM-REEL7
Manufacturer Part Number
AD623ARM-REEL7
Description
IC,Instrumentation Amplifier,SINGLE,SSOP,8PIN,PLASTIC
Manufacturer
Analog Devices Inc
Datasheet
1.AD623-EVAL.pdf
(24 pages)
Specifications of AD623ARM-REEL7
Rohs Status
RoHS non-compliant
Amplifier Type
Instrumentation
Number Of Circuits
1
Output Type
Rail-to-Rail
Slew Rate
0.3 V/µs
-3db Bandwidth
800kHz
Current - Input Bias
17nA
Voltage - Input Offset
200µV
Current - Supply
375µA
Voltage - Supply, Single/dual (±)
2.7 V ~ 12 V, ± 2.5 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Current - Output / Channel
-
Gain Bandwidth Product
-
Lead Free Status / RoHS Status
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AD623ARM-REEL7
Manufacturer:
AD
Quantity:
5 510
Company:
Part Number:
AD623ARM-REEL7
Manufacturer:
AD
Quantity:
5 510
AD623
APPLICATIONS INFORMATION
BASIC CONNECTION
Figure 42 and Figure 43 show the basic connection circuits for
the AD623. The +V
power supply. The supply can be either bipolar (V
±6 V) or single supply (−V
supplies should be capacitively decoupled close to the power pins of
the device. For the best results, use surface-mount 0.1 μF ceramic
chip capacitors and 10 μF electrolytic tantalum capacitors.
Table 5. Required Values of Gain Resistors
Desired Gain
2
5
10
20
33
40
50
65
100
200
500
1000
Figure 43. Single-Supply Basic Connection
V
V
Figure 42. Dual-Supply Basic Connection
IN
IN
R
R
S
0.1µF
0.1µF
0.1µF
G
G
and −V
R
R
R
R
+V
–V
+V
G
G
G
G
S
OUTPUT
OUTPUT
S
= 0 V, +V
S
REF
S
REF
S
+2.5V TO +6V
–2.5V TO –6V
+3V TO +12V
terminals are connected to the
10µF
10µF
10µF
S
= 3.0 V to 12 V). Power
V
REF (INPUT)
V
REF (INPUT)
OUT
OUT
1% Standard Table Value of R
100 k
24.9 k
11 k
5.23 k
3.09 k
2.55 k
2.05 k
1.58 k
1.02 k
499
200
100
S
= ±2.5 V to
Rev. D | Page 16 of 24
The input voltage, which can be either single-ended (tie either
−IN or +IN to ground), or differential is amplified by the
programmed gain. The output signal appears as the voltage
difference between the OUTPUT pin and the externally applied
voltage on the REF input. For a ground-referenced output, REF
should be grounded.
GAIN SELECTION
The gain of the AD623 is resistor programmed by R
precisely, by whatever impedance appears between Pin 1 and
Pin 8. The AD623 is designed to offer accurate gains using 0.1%
to 1% tolerance resistors. Table 5 shows the required values of
R
are unconnected (R
calculated by
REFERENCE TERMINAL
The reference terminal potential defines the zero output voltage
and is especially useful when the load does not share a precise
ground with the rest of the system. It provides a direct means of
injecting a precise offset to the output. The reference terminal is
also useful when bipolar signals are being amplified because it
can be used to provide a virtual ground voltage. The voltage on
the reference terminal can be varied from −V
G
for the various gains. Note that for G = 1, the R
G
R
(Ω)
G
= 100 kΩ/( G − 1)
G
Calculated Gain Using 1% Resistors
2
5.02
10.09
20.12
33.36
40.21
49.78
64.29
99.04
201.4
501
1001
= ∞). For any arbitrary gain, R
S
to +V
G
terminals
G
G
S
, or more
.
can be