OPA4244EA BURR-BROWN [Burr-Brown Corporation], OPA4244EA Datasheet - Page 11

• Manufacturer Part Number: OPA4244EA
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

APPLICATIONS INFORMATION
The OPA244 is unity-gain stable and suitable for a wide
range of general purpose applications. Power supply pins
should be bypassed with 0.01 F ceramic capacitors.
OPERATING VOLTAGE
The OPA244 can operate from single supply (+2.2V to
+36V) or dual supplies ( 1.1 to
performance. Unlike most op amps which are specified at
only one supply voltage, the OPA244 is specified for real
world applications; a single set of specifications applies
throughout the +2.6V to +36V ( 1.3 to 18V) supply range.
FIGURE 1. Low and High-Side Battery Current Sensing.
NOTE: Low and high-side sensing circuits can be used independently.
+
( 1.1V to 18V)
2.2V to 36V
V+ for A1, A2
V– for A1, A2
10k
38.3k
R
R
6
10
10
1
R
R
I
I
H
L
H
L
18V) with excellent
Optional for I
38.3k
–In
+In
9.09k
R
R
3
7
OPA244
(R
100k
A2
7
R
V+
V–
= R
8
B
6
Cancellation
Current Sense
II R
Current Sense
Out
High-Side
8
)
Low-Side
20k
11
R
4
This allows a designer to have the same assured perfor-
mance at any supply voltage within this range. In addition,
many key parameters are guaranteed over the specified
temperature range, –40 C to +85 C. Most behavior remains
unchanged throughout the full operating voltage range. Pa-
rameters which vary significantly with operating voltage or
temperature are shown in typical performance curves.
Useful information on solder pad design for printed circuit
boards can be found in Burr-Brown's Application Bulletin
AB-132B, “Solder Pad Recommendations for Surface-
Mount Devices,” easily found at Burr-Brown's web site
(http://www.burr-brown.com).
–In
+In
19.1k
R
2
OPA244
383k
A1
R
V+
V–
R
common-mode input to A1.
Common-mode range of A2
extends to V– for low-side sensing.
5
2
and R
OPA244, 2244, 4244
Out
4
divide down the
To Load
V
V
To Load
O
O
= 10 • I
= 10 • I
H
L
• R
• R
L
H
®