MAX421CPD Maxim Integrated Products, MAX421CPD Datasheet - Page 11

• Manufacturer Part Number: MAX421CPD
• Description: Op Amps Integrated Circuits (ICs)
• Manufacturer: Maxim Integrated Products

Specifications of MAX421CPD

• Number Of Channels: 1
• Voltage Gain Db: 150 dB
• Common Mode Rejection Ratio (min): 120 dB
• Input Offset Voltage: 0.01 mV
• Supply Current: 2 mA
• Maximum Power Dissipation: 375 mW
• Maximum Operating Temperature: + 70 C
• Mounting Style: Through Hole
• Package / Case: PDIP N
• Maximum Dual Supply Voltage: +/- 16.5 V
• Minimum Operating Temperature: 0 C

For applications that require a complete low-power
instrumentation amplifier, refer to the MAX4194–
MAX4197 data sheet. Some differential to single-ended
voltage amplifier applications that don’t require a high
input impedance can use the MAX4198/MAX4199 for
gains of +1V/V or +10V/V. The MAX4198/MAX4199 can
Figure 4. Precision Gain of Two Amplifiers
Figure 6. Digitally Controlled Precision Gain of ±1 Amplifier
V
V
A
A
REF
NOTE: MAX4544 PINOUT FOR 6-PIN SOT23-6
NO
NC
IN-
IN+
6
4
Instrumentation Amplifier Applications
MAX4544
IN
3
2
1
1
5
COM
REF
IN+
IN-
______________________________________________________________________________________
2
3
1
Micropower, Single-Supply, Rail-to-Rail
V
CC
MAX4198
MAX4198
V
EE
V
CC
V
Precision Differential Amplifiers
EE
5
6
FB
6
OUT
V
OUT
LOGIC
FB
5
IN
0
1
OUT
= 2V
A
V
+V
V
-V
OUT
V
OUT
A
OUT
A
also be used as an instrumentation amplifier building
block. The circuit of Figure 7 takes advantage of the
10pA (max), 0.1pA (typ) bias current of the MAX406A
to form an instrumentation amplifier similar to the
MAX4194 family, except with lower input bias currents.
The MAX406A's low 1.2µA supply current maintains a
low overall supply current.
Figure 5. Single-Supply Inverting Amplifier Biased at V
Figure 7. Ultra-Low Input Bias Current (0.1pA) Instrumentation
Amplifiers with 47µA Supply-Current Consumption
V
V
V
A
B
A
A1, A2 = MAX406A
R
IN-
1
A1
A2
R
R
2
2
V
CC
REF
IN+
IN+
IN-
MAX4198
V
MAX4198
CC
V
OUT
= (1 + 2R
FB
OUT
2
V
/ R
OUT
REF
FB
OUT
1
) (V
= -V
B
CC
A
- V
A
/ 2
V
)
V
OUT
OUT
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