Changes to Ordering Guide .......................................................... 17
2/05—Rev. 0 to Rev. A
Changes to Specifications Table ......................................................3
Changes to Caption on Figure 6 and Figure 8 ...............................6
Changes to Figure 12.........................................................................7
Added Figure 14 to Figure 23 ..........................................................7
Changes to Figure 26 and Figure 27 ............................................ 10
Changes to Figure 29...................................................................... 11
Changes to Figure 32 and Figure 33 ............................................ 12
Changes to Ordering Guide .......................................................... 13
10/04—Revision 0: Initial Version
Rev. D | Page 2 of 20
Data Sheet
SPECIFICATIONS
SINGLE SUPPLY
AD8203
T
OPR
= operating temperature range, V
S
= 5 V, unless otherwise noted, RTI = referred to input, VCM = common-mode voltage.
Table 1.
Parameter
SYSTEM GAIN
Initial
Error vs. Temperature
Gain Drift
VOLTAGE OFFSET
Initial Input Offset (RTI), T
OPR
Offset vs. Temperature
INPUT
Input Impedance
Differential
Common Mode
CMV
CMRR
1
Conditions
AD8203 SOIC
Min
Typ
Max
14
0.04 ≤ V
OUT
≤ 4.8 V dc, T
OPR
T
OPR
±0.3
±20
±2
±10
AD8203 MSOP
Min
Typ
Max
14
±0.3
±20
±2
±15
Unit
V/V
%
ppm/°C
V
CM
= 0V, T
OPR
µV/°C
Continuous
V
CM
= −6 V to +30 V
f = dc to 1 kHz
f = 10 kHz
2
260
130
−6
82
80
320
160
380
190
+30
260
130
−6
82
80
320
160
380
190
+30
kΩ
kΩ
V
dB
dB
PREAMPLIFIER
Gain
Gain Error
Output Voltage Range
Output Resistance
OUTPUT BUFFER
Gain
Gain Error
Output Voltage Range
3
Input Bias Current
Output Resistance
DYNAMIC RESPONSE
System Bandwidth
Slew Rate
NOISE
0.1 Hz to 10 Hz
Spectral Density, 1 kHz (RTI)
POWER SUPPLY
Operating Range
Quiescent Current vs.
Temperature
PSRR
TEMPERATURE RANGE
For Specified Performance
1
2
7
0.02
97
±0.3
4.8
103
0.02
97
7
±0.3
4.8
103
100
2
100
2
V/V
%
V
kΩ
V/V
%
V
nA
Ω
kHz
V/µs
µV p-p
nV/√Hz
0.04 ≤ V
OUT
≤ 4.8 V dc, T
OPR
0.04
40
2
V
IN
= 0.01 V p-p, V
OUT
= 0.14 V p-p
V
IN
= 0.28 V, V
OUT
= 4 V step
40
60
0.33
10
300
3.5
V
O
= 0.1 V dc
V
S
= 3.5 V to 12 V
75
−40
0.25
83
±0.3
4.8
0.04
40
2
40
60
0.33
10
300
±0.3
4.8
12
1.0
3.5
0.25
75
83
12
1.0
V
mA
dB
+125
−40
+125
°C
Source imbalance <2 Ω.
The AD8203 preamplifier exceeds 80 dB CMRR at 10 kHz. However, since the signal is available only by way of a 100 kΩ resistor, even the small amount of pin-to-pin
capacitance between Pin 1, Pin 8 and Pin 3, Pin 4 may couple an input common-mode signal larger than the greatly attenuated preamplifier output. The effect of pin-
to-pin coupling may be neglected in all applications by using filter capacitors at Node 3.
3
The output voltage range of A2 assumes that Pin 3 (A1 output) and Pin 4 (A2 Input) are shorted together. A 25 kΩ load resistor used for testing.
Rev. D | Page 3 of 20
AD8203
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
Supply Voltage
Transient Input Voltage (400 ms)
Continuous Input Voltage (Common Mode)
Reversed Supply Voltage Protection
Operating Temperature Range
SOIC
MSOP
Storage Temperature
Output Short-Circuit Duration
Lead Temperature Range (Soldering 10 sec)
Rating
12.5 V
44 V
35 V
0.3 V
−40°C to +125°C
−40°C to +125°C
−65°C to +150°C
Indefinite
300°C
Data Sheet
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate
on the human body and test equipment and can discharge without detection. Although this product
features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to
high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid
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Test/Measurement
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