19-2772; Rev 3a; 1/98
High-Precision, Low-Voltage,
Micropower Op Amp
General Description
The MAX480 is a precision micropower operational ampli-
fier with flexible power-supply capability. Its guaranteed
140µV maximum offset voltage (25µV typ) is the lowest of
any micropower op amp. Similarly, input bias current,
input offset current, and drift specifications are within tight
limits.
Both the input and output voltage ranges include the neg-
ative supply rail, allowing maximum signal range capabili-
ty in single-supply applications. The MAX480 operates
with either a single supply ranging from +1.6V to +36V or
dual supplies from ±0.8V to ±18V. The MAX480 con-
sumes less than 20µA, allowing operation in excess of
10,000 hours from a 250mA-hr lithium coin cell. Even with
a minimal quiescent current, the amplifier sinks or sources
5mA from its output.
The MAX480 is available in 8-pin DIP and SO packages in
commercial, extended, and military temperature ranges.
PART
Features
o
Single- or Dual-Supply Operation: +1.6V to +36V,
±0.8V to ±18V
o
True Single-Supply Operation: Input and Output
Voltage Ranges Include Ground
o
2.0µV/°C Max Offset Voltage Drift
o
20µA Max Supply Current
o
5mA Min Output Drive
o
140µV Max Input Offset Voltage
o
3nA Max Input Bias Current
o
500V/mV Min Open-Loop Gain
o
Standard 741 Pinout with Nulling to V-
MAX480
Ordering Information
TEMP. RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 CERDIP
MAX480CPA
MAX480CSA
MAX480EPA
MAX480ESA
MAX480MJA
Applications
Precision Micropower Amplifiers
Micropower Signal Processing
Battery-Powered Analog Circuits
Typical Operating Circuit
V+ (5V)
Pin Configuration
TOP VIEW
R2
10k
R1
10k
V
IN
HP5082-2800
2
7
IN914
6
NULL
1
OUT
IN-
2
8
7
N.C.
V+
OUT
NULL
3
MAX480
4
R3
100k
MAX480
IN+
3
6
5
V-
4
DIP/SO
SINGLE OP AMP FULL-WAVE RECTIFIER
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
