MAX954ESA Maxim Integrated Products, MAX954ESA Datasheet - Page 8

• Manufacturer Part Number: MAX954ESA
• Description: Op Amps Op Amp / Comparator / Reference
• Manufacturer: Maxim Integrated Products

Specifications of MAX954ESA

• Lead Free Status / Rohs Status: No

The MAX951–MAX954 are combinations of a micropow-
er op amp, comparator, and reference in an 8-pin pack-
age, as shown in Figure 1. In the MAX951/MAX952, the
comparator’s negative input is connected to a 1.20V
±2% bandgap reference. All four devices are optimized
to operate from a single supply. Supply current is less
than 10µA (7µA typical) for the MAX951/MAX952 and
less than 8µA (5µA typical) for the MAX953/MAX954.
The op amps in the MAX951/MAX953 are internally
compensated to be unity-gain stable, while the op
amps in the MAX952/MAX954 feature 125kHz typical
gain bandwidth, 66V/ms slew rate, and stability for
gains of 10V/V or greater. All these op amps feature
Ultra-Low-Power, Single-Supply
Op Amp + Comparator + Reference
Figure 1. MAX951–MAX954 Functional Diagrams
8
MAX951
MAX952
_______________________________________________________________________________________
—
1
2
3
4
5
6
7
8
1
2
3
4
PIN
AMPOUT
AMPIN-
AMPIN+
V
SS
MAX953
MAX954
OP AMP
—
1
2
3
4
5
6
7
8
MAX951
MAX952
Detailed Description
1.20V
COMPOUT
COMPIN+
COMPIN-
AMPOUT
AMPIN+
AMPIN-
NAME
REF
V
V
DD
SS
x1
COMP
Op Amp Output
Inverting Op Amp Input
Noninverting Op Amp Input
Negative Supply or Ground
Noninverting Comparator Input
1.200V Reference Output. Also connected to inverting comparator input.
Inverting Comparator Input
Comparator Output
Positive Supply
COMPOUT
COMPIN+
Op Amp
V
REF
DD
6
8
7
5
high-impedance differential inputs and a common-
mode input voltage range that extends from the nega-
tive supply rail to within 1.6V of the positive rail. They
have a CMOS output stage that swings rail to rail and is
driven by a proprietary high gain stage, which enables
them to operate with an ultra-low supply current while
maintaining linearity under loaded conditions. Careful
design results in good DC characteristics over their
entire operating temperature range, minimizing input
referred errors.
The comparator in the MAX951–MAX954 has a high-
impedance differential input stage with a common-
mode input voltage range that extends from the
negative supply rail to within 1.6V of the positive rail.
Their CMOS output stage swings rail-to-rail and can
3
1
2
4
AMPOUT
AMPIN-
AMPIN+
V
SS
OP AMP
FUNCTION
Functional Diagrams
MAX953
MAX954
Pin Description
COMP
COMPOUT
COMPIN+
COMPIN-
Comparator
V
DD
8
7
6
5