MAX421CPD Maxim Integrated Products, MAX421CPD Datasheet - Page 9

• 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

(V
T
The MAX4198/MAX4199 are precision low-power differ-
ential amplifiers with factory-trimmed internal gain-set-
ting resistors. The MAX4198 is trimmed to a gain of
+1V/V and the MAX4199 is trimmed to a gain of +10V/V.
The Functional Diagram shows the internal structure of
the MAX4198/MAX4199. Although the resistors are pre-
cision matched, their absolute value varies by ±25%.
The typical input impedance for the MAX4198 is 50kΩ
for the noninverting input and 25kΩ for the inverting
input. The typical input impedance for the MAX4199 is
275kΩ for the noninverting input and 25kΩ for the
inverting input.
_______________Detailed Description
A
CC
= +25°C, unless otherwise noted.)
= +5V, V
PIN
1
2
3
4
5
6
7
8
-0.5
7.5
6.5
5.5
4.5
3.5
2.5
1.5
0.5
EE
= 0V, R
2
V
INPUT COMMON-MODE RANGE vs.
REF
NAME
SHDN
_______________________________________________________________________________________
OUT
REF
V
IN+
V
= V
IN-
FB
3
CC
EE
CC
L
/2
Micropower, Single-Supply, Rail-to-Rail
= 25kΩ to V
SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
4
MAX4199
5
Reference Voltage Input. Offsets output voltage.
Inverting Input
Noninverting Input
Negative Supply Voltage
Feedback Resistor. Can be used as a sense input.
Amplifier Output
Positive Supply Voltage
Shutdown Control. Shutdown threshold is referenced to V
is in shutdown.
CC
6
/ 2, V
Precision Differential Amplifiers
7
Input Stage
SHDN
Typical Operating Characteristics (continued)
8
= V
CC
- 1.5V, small-signal V
The common-mode inputs of the internal op amp can
range from V
the internal op amp are not rail-to-rail, the internal resis-
tors form a voltage divider that extends the input com-
mon-mode range beyond-the-rails for the MAX4198.
The overall input range of the MAX4198 extends 100mV
beyond-the-rails without adversely affecting common-
mode rejection or undergoing phase reversal (V
5V). The MAX4199 input common-mode range extends
from 100mV below the negative rail to (V
the Input Common-Mode Voltage Range vs. Supply
Voltage graph in the Typical Operating Characteristics ).
FUNCTION
OUT
-0.5
8.5
7.5
6.5
5.5
4.5
3.5
2.5
1.5
0.5
EE
= 100mVp-p, large-signal V
2
V
to (V
INPUT COMMON-MODE RANGE vs.
REF
CC
= V
3
CC
CC
. When pulled 2.5V below V
/2
SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
4
- 1.1V). Although the inputs to
MAX4198
5
Pin Description
6
OUT
7
CC
= 1Vp-p,
8
CC
- 1V) (see
, part
CC
=
9