Datasheet OPA244PA, OPA4344PA, OPA4344EA-2K5, OPA4344EA, OPA244NA-250 Datasheet (Burr Brown)

®

®

OPA4244

OPA244

OPA244

OPA2244

OPA2244

1
2
3
4
5
6
7

14
13
12
11
10

9
8

Output D
–Input D
+Input D
–V
+Input C
–Input C
Output C

Output A

–Input A
+Input A

+V
+Input B
–Input B

Output B

OPA4244

TSSOP-14

OPA244
OPA2244
OPA4244

Micro

Power,

OPERA TIONAL AMPLIFIERS

Micro

FEATURES

●

Micro

SIZE PACKAGES
OPA244 (Single): SOT-23-5
OPA2244 (Dual): MSOP-8
OPA4244 (Quad): TSSOP-14

●

Micro

POWER: IQ = 50µA/channel

● SINGLE SUPPLY OPERATION

● WIDE BANDWIDTH: 430 kHz

● WIDE SUPPLY RANGE:

Single Supply: 2.2V to 36V
Dual Supply: ±1.1V to ±18V

APPLICATIONS

● BATTERY POWERED SYSTEMS

● PORTABLE EQUIPMENT

● PCMCIA CARDS

● BATTERY PACKS AND POWER SUPPLIES

● CONSUMER PRODUCTS

OPA244

Out

1

V–

2

+In

3

Amplifier

V+

5

–In

4

Single-Supply

™

Series

DESCRIPTION

The OPA244 (single), OPA2244 (dual), and OPA4244 (quad)
op amps are designed for very low quiescent current
(50µA/channel), yet achieve excellent bandwidth. Ideal for
battery powered and portable instrumentation, all versions are
offered in micro packages for space-limited applications.
The dual and quad versions feature completely independent
circuitry for lowest crosstalk and freedom from interaction, even
when overdriven or overloaded.

The OPA244 series is easy to use and free from phase
inversion and overload problems found in some other op amps.
These amplifiers are stable in unity gain and excellent perfor­mance is maintained as they swing to their specified limits.
They can be operated from single (+2.2V to +36V) or dual
supplies (±1.1V to ±18V). The input common-mode voltage
range includes ground—ideal for many single supply applica­tions. All versions have similar performance. However, there
are some differences, such as common-mode rejection. All
versions are interchangeable in most applications.

All versions are offered in miniature, surface-mount packages.
OPA244 (single version) comes in the tiny 5-lead SOT-23-5
surface mount, SO-8 surface mount, and 8-pin DIP. OPA2244
(dual version) is available in the MSOP-8 surface mount,
SO-8 surface-mount, and 8-pin DIP. The OPA4244 (quad)
comes in the TSSOP-14 surface mount. They are fully specified
from –40°C to +85°C and operate from –55°C to +125°C.
A SPICE Macromodel is available for design analysis.

SOT-23-5

OPA244

NC

1

–In

2

+In

3

V–

4

© 1999 Burr-Brown Corporation PDS-1437C Printed in U.S.A. December, 1999

8-Pin DIP, SO-8

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone]

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

8
7
6
5

NC
V+
Output
NC

Out A

–In A
+In A

V–

OPA2244

1

A

2
3
4

8-Pin DIP, SO-8, MSOP-8

B

V+

8

Out B

7

–In B

6

+In B

5

SPECIFICATIONS: VS = +2.6V to +36V

Boldface limits apply over the specified temperature range, TA = –40°C to +85°C

At TA = +25°C, RL = 20kΩ connected to ground, unless otherwise noted.

OPA244NA, PA, UA

PARAMETER CONDITION MIN TYP
OFFSET VOLTAGE

Input Offset Voltage V

= –40°C to 85°C ±2 mV

T

A

vs Temperature dV
vs Power Supply PSRR V

= –40°C to 85°C VS = +2.6V to +36V 50 µV/V

T

A

OS

/dT TA = –40°C to 85°C ±4 µV/°C

OS

VS = ±7.5V, VCM = 0 ±0.7 ±1.5 mV

= +2.6V to +36V 5 50 µV/V

S

INPUT BIAS CURRENT

Input Bias Current I
Input Offset Current I

B

OS

VCM = VS/2 –10 –25 nA
VCM = VS/2 ±1 ±10 nA

NOISE

Input Voltage Noise, f = 0.1kHz to 10kHz 0.4 µVp-p
Input Voltage Noise Density, f = 1kHz e
Current Noise Density, f = 1kHz i

n
n

INPUT VOLTAGE RANGE

Common-Mode Voltage Range V
Common-Mode Rejection CMRR V

= –40°C to 85°C VS = ±18V, VCM = –18V to +17.1V 84 dB

T

A

CM

= ±18V, VCM = –18V to +17.1V 84 98 dB

S

0 (V+) – 0.9 V

INPUT IMPEDANCE

Differential 106 || 2 Ω || pF
Common-Mode 10

OPEN-LOOP GAIN

Open-Loop Voltage Gain A

= –40°C to 85°C VO = 0.5V to (V+) – 0.9 86 dB

T

A

OL

VO = 0.5V to (V+) – 0.9 86 106 dB

FREQUENCY RESPONSE

Gain-Bandwidth Product GBW 430 kHz
Slew Rate SR G = 1 –0.1/+0.16 V/µs
Settling Time 0.01% 10V Step 150 µs
Overload Recovery Time V

• Gain = V

IN

S

OUTPUT

A

Voltage Output, Positive V

= –40°C to 85°C A

T

A

Voltage Output, Negative A

= –40°C to 85°C A

T

A

Voltage Output, Positive A

= –40°C to 85°C A

T

A

Voltage Output, Negative A

= –40°C to 85°C A

T

A

Short-Circuit Current I
Capacitive Load Drive C

O

SC

LOAD

≥ 80dB, RL = 20kΩ to VS/2 (V+) – 0.9 (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to VS/2 (V+) – 0.9 (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to VS/2 0.5 0.2 V

OL

≥ 80dB, RL = 20kΩ to VS/2 0.5 0.2 V

OL

≥ 80dB, RL = 20kΩ to Ground (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to Ground (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to Ground 0.1 V

OL

≥ 80dB, RL = 20kΩ to Ground 0.1 V

OL

See Typical Curve

POWER SUPPLY

Specified Voltage Range V
Minimum Operating Voltage +2.2 V
Quiescent Current I

= –40°C to 85°C IO = 0 70 µA

T

A

S

Q

TA = –40°C to 85°C +2.6 +36 V

IO = 0 50 60 µA

TEMPERATURE RANGE

Specified Range –40 85 °C
Operating Range –55 125 °C
Storage Range –65 150 °C
Thermal Resistance

SOT-23-5 Surface-Mount 200 °C/W

θ

JA

SO-8 Surface-Mount 150 °C/W
8-Pin DIP 100 °C/W

NOTE: (1) V

= +15V.

S

(1)

MAX UNITS

22 nV/√Hz
40 fA/√Hz

9

|| 2 Ω || pF

8 µs

–25 /+12 mA

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.

®

OPA244, 2244, 4244

2

SPECIFICATIONS: VS = +2.6V to +36V

Boldface limits apply over the specified temperature range, TA = –40°C to +85°C

At TA = +25°C, RL = 20kΩ connected to ground, unless otherwise noted.

OPA2244EA, PA, UA
PARAMETER CONDITION MIN TYP
OFFSET VOLTAGE

Input Offset Voltage V

= –40°C to 85°C ±2 mV

T

A

vs Temperature dV
vs Power Supply PSRR V

= –40°C to 85°C VS = +2.6V to +36V 50 µV/V

T

A

Channel Separation 140 dB

OS

/dT TA = –40°C to 85°C ±4 µV/°C

OS

VS = ±7.5V, VCM = 0 ±0.7 ±1.5 mV

= +2.6V to +36V 5 50 µV/V

S

INPUT BIAS CURRENT

Input Bias Current I
Input Offset Current I

B

OS

VCM = VS/2 –10 –25 nA
VCM = VS/2 ±1 ±10 nA

NOISE

Input Voltage Noise, f = 0.1kHz to 10kHz 0.4 µVp-p
Input Voltage Noise Density, f = 1kHz e
Current Noise Density, f = 1kHz i

n
n

INPUT VOLTAGE RANGE

Common-Mode Voltage Range V
Common-Mode Rejection CMRR V

= –40°C to 85°C VS = ±18V, VCM = –18V to +17.1V 72 dB

T

A

CM

= ±18V, VCM = –18V to +17.1V 72 98 dB

S

0 (V+) – 0.9 V

INPUT IMPEDANCE

Differential 106 || 2 Ω || pF
Common-Mode 10

OPEN-LOOP GAIN

Open-Loop Voltage Gain A

= –40°C to 85°C VO = 0.5V to (V+) – 0.9 86 dB

T

A

OL

VO = 0.5V to (V+) – 0.9 86 106 dB

FREQUENCY RESPONSE

Gain-Bandwidth Product GBW 430 kHz
Slew Rate SR G = 1 –0.1/+0.16 V/µs
Settling Time 0.01% 10V Step 150 µs
Overload Recovery Time V

• Gain = V

IN

S

OUTPUT

A

Voltage Output, Positive V

= –40°C to 85°C A

T

A

Voltage Output, Negative A

= –40°C to 85°C A

T

A

Voltage Output, Positive A

= –40°C to 85°C A

T

A

Voltage Output, Negative A

= –40°C to 85°C A

T

A

Short-Circuit Current I
Capacitive Load Drive C

O

SC

LOAD

≥ 80dB, RL = 20kΩ to VS/2 (V+) – 0.9 (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to VS/2 (V+) – 0.9 (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to VS/2 0.5 0.2 V

OL

≥ 80dB, RL = 20kΩ to VS/2 0.5 0.2 V

OL

≥ 80dB, RL = 20kΩ to Ground (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to Ground (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to Ground 0.1 V

OL

≥ 80dB, RL = 20kΩ to Ground 0.1 V

OL

See Typical Curve

POWER SUPPLY

Specified Voltage Range V
Minimum Operating Voltage +2.2 V
Quiescent Current (per amplifier) I

= –40°C to 85°C IO = 0 63 µA

T

A

S

Q

TA = –40°C to 85°C +2.6 +36 V

IO = 0 40 50 µA

TEMPERATURE RANGE

Specified Range –40 85 °C
Operating Range –55 125 °C
Storage Range –65 150 °C
Thermal Resistance

MSOP-8 Surface-Mount 200 °C/W

θ

JA

SO-8 Surface-Mount 150 °C/W
8-Pin DIP 100 °C/W

NOTE: (1) V

= +15V.

S

(1)

MAX UNITS

22 nV/√Hz
40 fA/√Hz

9

|| 2 Ω || pF

8 µs

–25 /+12 mA

®

3

OPA244, 2244, 4244

SPECIFICATIONS: VS = +2.6V to +36V

Boldface limits apply over the specified temperature range, TA = –40°C to +85°C

At TA = +25°C, RL = 20kΩ connected to ground, unless otherwise noted.

OPA4244EA
PARAMETER CONDITION MIN TYP
OFFSET VOLTAGE

Input Offset Voltage V

= –40°C to 85°C ±2 mV

T

A

vs Temperature dV
vs Power Supply PSRR V

= –40°C to 85°C VS = +2.6V to +36V 50 µV/V

T

A

Channel Separation 140 dB

OS

/dT TA = –40°C to 85°C ±4 µV/°C

OS

VS = ±7.5V, VCM = 0 ±0.7 ±1.5 mV

= +2.6V to +36V 5 50 µV/V

S

INPUT BIAS CURRENT

Input Bias Current I
Input Offset Current I

B

OS

VCM = VS/2 –10 –25 nA
VCM = VS/2 ±1 ±10 nA

NOISE

Input Voltage Noise, f = 0.1kHz to 10kHz 0.4 µVp-p
Input Voltage Noise Density, f = 1kHz e
Current Noise Density, f = 1kHz i

n
n

INPUT VOLTAGE RANGE

Common-Mode Voltage Range V
Common-Mode Rejection CMRR V

= –40°C to 85°C VS = ±18V, VCM = –18V to +17.1V 82 dB

T

A

CM

= ±18V, VCM = –18V to +17.1V 82 104 dB

S

0 (V+) – 0.9 V

INPUT IMPEDANCE

Differential 106 || 2 Ω || pF
Common-Mode 10

OPEN-LOOP GAIN

Open-Loop Voltage Gain A

= –40°C to 85°C VO = 0.5V to (V+) – 0.9 86 dB

T

A

OL

VO = 0.5V to (V+) – 0.9 86 106 dB

FREQUENCY RESPONSE

Gain-Bandwidth Product GBW 430 kHz
Slew Rate SR G = 1 –0.1/+0.16 V/µs
Settling Time 0.01% 10V Step 150 µs
Overload Recovery Time V

• Gain = V

IN

S

OUTPUT

A

Voltage Output, Positive V

= –40°C to 85°C A

T

A

Voltage Output, Negative A

= –40°C to 85°C A

T

A

Voltage Output, Positive A

= –40°C to 85°C A

T

A

Voltage Output, Negative A

= –40°C to 85°C A

T

A

Short-Circuit Current I
Capacitive Load Drive C

O

SC

LOAD

≥ 80dB, RL = 20kΩ to VS/2 (V+) – 0.9 (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to VS/2 (V+) – 0.9 (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to VS/2 0.5 0.2 V

OL

≥ 80dB, RL = 20kΩ to VS/2 0.5 0.2 V

OL

≥ 80dB, RL = 20kΩ to Ground (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to Ground (V+) – 0.75 V

OL

≥ 80dB, RL = 20kΩ to Ground 0.1 V

OL

≥ 80dB, RL = 20kΩ to Ground 0.1 V

OL

See Typical Curve

POWER SUPPLY

Specified Voltage Range V
Minimum Operating Voltage +2.2 V
Quiescent Current (per amplifier) I

= –40°C to 85°C IO = 0 70 µA

T

A

S

Q

TA = –40°C to 85°C +2.6 +36 V

IO = 0 40 60 µA

TEMPERATURE RANGE

Specified Range –40 85 °C
Operating Range –55 125 °C
Storage Range –65 150 °C
Thermal Resistance

TSSOP-14 Surface Mount 100 °C/W

θ

JA

NOTE: (1) VS = +15V.

(1)

MAX UNITS

22 nV/√Hz
40 fA/√Hz

9

|| 2 Ω || pF

8 µs

–25/ +12 mA

®

OPA244, 2244, 4244

4

ABSOLUTE MAXIMUM RATINGS

Supply Voltage, V+ to V–.................................................................... 36V

Input Voltage Range
Input Current
Output Short-Circuit

Operating Temperature ..................................................–55°C to +125°C

Storage Temperature ..................................................... –65°C to +150°C

Junction Temperature ...................................................................... 150°C

Lead Temperature (soldering, 10s) ................................................. 300°C

ESD Capability ................................................................................ 2000V

NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may de­grade device reliability. (2) Inputs are diode-clamped to the supply rails and
should be current-limited to 10mA or less if input voltages can exceed rails
by more than 0.3V. (3) Short-circuit to ground, one amplifier per package.

(2)

(2)

................................... (V–) – 0.3V to (V+) + 0.3V

................................................................................. 10mA

(3)

.............................................................. Continuous

(1)

ELECTROSTATIC
DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.

ESD damage can range from subtle performance degrada­tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.

PACKAGE/ORDERING INFORMATION

PACKAGE SPECIFIED

PRODUCT PACKAGE NUMBER RANGE MARKING NUMBER

DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT

Single

OPA244NA SOT-23-5 Surface-Mount 331 –40°C to +85°C A44 OPA244NA/250 Tape and Reel

"""""OPA244NA/3K Tape and Reel

OPA244PA 8-Pin DIP 006 –40°C to +85°C OPA244PA OPA244PA Rails
OPA244UA SO-8 Surface-Mount 182 –40°C to +85°C OPA244UA OPA244UA Rails

"""""OPA244UA/2K5 Tape and Reel

Dual

OPA2244EA MSOP-8 Surface-Mount 337 –40°C to +85°C A44 OPA2244EA/250 Tape and Reel

"""""OPA2244EA/2K5 Tape and Reel

OPA2244PA 8-Pin DIP 006 –40 °C to +85°C OPA2244PA OPA2244PA Rails
OPA2244UA SO-8 Surface-Mount 182 –40°C to +85°C OPA2244UA OPA2244UA Rails

"""""OPA2244UA/2K5 Tape and Reel

Quad

OPA4244EA TSSOP-14 Surface-Mount 357 –40°C to +85°C OPA4244EA OPA4244EA/250 Tape and Reel

"""""OPA4244EA/2K5 Tape and Reel

NOTE: (1) Products followed by a slash (/) are only available in Tape and Reel in the quantities indicated (e.g., /250 indicates 250 devices per reel). Ordering 3000
pieces of “OPA244NA/3K” will get a single 3000 piece Tape and Reel.

(1)

MEDIA

®

5

OPA244, 2244, 4244

TYPICAL PERFORMANCE CURVES

At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted.

180
160
140
120
100

(dB)

OL

A

–20

110
100

PSRR, CMRR (dB)

OPEN-LOOP GAIN AND PHASE vs FREQUENCY

Phase

80
60
40
20

0

1

90
80
70
60
50
40
30

10 100 1k 10k 100k 1M

Gain

10

OPA2244

100

Frequency (Hz)

OPA244

Frequency (Hz)

10k

1k

POWER SUPPLY AND COMMON-MODE REJECTION vs FREQUENCY

CMRR

PSRR

All Models

100k 1M

0
–20
–40
–60
–80
–100
–120
–140
–160
–180
–200

160
150
140
130
120
110

Phase(°)

100

Separation (dB)

120
110
100

PSRR, CMRR (dB)

CHANNEL SEPARATION

OPA244

OPA4244

90
80
70
60

1

90
80
70
60
50
40
30

1

10

10

100 1k

Frequency (Hz)

100

Frequency (Hz)

PSRR

1k

10k

OPA2244

10k

CMRR

OPA4244

100k

100k

1M

120

110

100

90

Gain(dB)

80

70

60

OPEN-LOOP GAIN vs LOAD RESISTANCE

VO = ±5V

1

®

10 100

Load (kΩ)

OPA244, 2244, 4244

15
14
13
12
11
10

–10
–11
–12

Output Voltage Swing (V)

–13
–14
–15

6

OUTPUT VOLTAGE SWING vs OUTPUT CURRENT

RL to VS/2

25°C

125°C

–55°C

–55°C

125°C

25°C

0 ±2 ±4 ±6 ±8 ±10 ±14±12

Output Current (mA)

TYPICAL PERFORMANCE CUR VES (Cont.)

At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted.

INPUT BIAS CURRENT

vs INPUT COMMON-MODE VOLTAGE

–12

–10

–8

–6

Bias Current (nA)

–4

–2

–15 –10 –5 0 5 10 15

Common-Mode Voltage (V)

OL, CMRR, PSRR vs TEMPERATURE

A

125
120
115
110
105

PSRR

CMRR

100

95
90

A

OL

85
80

–75

–50

–25

0

25

75

50

Temperature(°C)

100

125

–12

INPUT BIAS CURRENT vs TEMPERATURE

–11

–10

–I

–9

+I

B

B

–8

Bias Current (nA)

–7

–6

–5

–75 –50 –25 0 25 50 75 100 125

Temperature (°C)

SLEW RATE vs TEMPERATURE

0.20

0.18

0.16

+SR

0.14

0.12

0.10

–SR

0.08

Slew Rate (V/µs)

0.06

0.04

VS = ±7.5, RL = 20kΩ,

= 100pF, Gain = +1

C

L

0.02

0.00
–75

–25

25

75

Temperature (°C)

125

175

120

100

80

60

CMRR (dB)

40

20

0

04

COMMON-MODE REJECTION

vs SUPPY VOLTAGE

8

12

20 24 28

16

Suppy Voltage (V)

32 36

QUIESCENT CURRENT AND SHORT-CIRCUIT

vs SUPPLY VOLTAGE

52

48

44

I

Q

–I

SC

40

36

32

Quiescent Current (µA)

+I

SC

28

24

0

4

812

16

20

28

24

32

35

30

25

20

15

10

Short-Circuit Current (mA)

5

0

36

Supply Voltage (V)

®

7

OPA244, 2244, 4244

TYPICAL PERFORMANCE CUR VES (Cont.)

At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted.

65
60
55
50
45
40
35

Quiescent Current (µA)

30
25

–75 –50 –25 0 25 50 75 100 125

1000

100

10

–I

SC

I

+I

SC

Temperature (°C)

INPUT VOLTAGE AND CURRENT NOISE

SPECTRAL DENSITY vs FREQUENCY

Current Noise

Voltage Noise

Q

Voltage Noise (nV√Hz)

1

1 10 100 1k 10k 100k

Frequency (Hz)

QUIESCENT AND SHORT-CIRCUIT CURRENT vs TEMPERATURE

OPA244
OPA2244

±40
±35
±30
±25
±20
±15
±10

Short-Circuit Current (mA)

±5
0

1000

100

10

Quiescent Current (µA)

Current Noise (fA√Hz)

1

60

55

50

45

40

35

30

20

–75

40

VS = 36V

35
30
25
20

VS =15V

15

Output Voltage (Vp-p)

10

5

VS = 2.7V

0

100

OPA4244

–I

SC

I

Q

+I

SC

–50

–25

025

50

100

75

Temperature (°C)

MAXIMUM OUTPUT VOLTAGE vs FREQUENCY

1k

10k

Frequency(Hz)

100k

125

1M

–30

–25

–20

–15

+15

+10

Short-Circuit Current (mA)

+5

0

60

OPA244

50

OPA2244

40

30

Overshoot (%)

20

10

0

100 1k 10k

Load Capacitance (pF)

®

G = –1

G = +1

G = –2

G = +3

OPA244, 2244, 4244

SMALL SIGNAL OVERSHOOT vs LOAD CAPACITANCE

8

70%

60%

50%

40%

30%

Overshoot (%)

20%

G = +1, R

10%

0%

10

G = +1, RL = ∞

= 20kΩ

L

100

Load Capacitance (pF)

G = +2, RL = 20kΩ

G = +3, RL = 20kΩ

1k

OPA4244

10k

TYPICAL PERFORMANCE CUR VES (Cont.)

Percent of Amplifiers (%)

Offset Voltage (µV)

–1500

–1200

–900

–600

–300

0

300

600

900

1200

1500

1800

30

25

20

15

10

5

0

OPA4244

At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted.

LARGE-SIGNAL STEP RESPONSE, G = 1, CL = 100pF

2V/div

50mV/div

25µs/div

OPA244
OPA2244

2V/div

SMALL-SIGNAL STEP RESPONSE, G = 1, C

OPA244
OPA2244

50mV/div

= 100pF

L

OPA4244

50µs/div

OPA4244

12

10

8

6

4

Percent of Amplifiers (%)

2

0

–1500

–1300

–1100

–900

–700

–500

Offset Voltage (µV)

10µs/div

–300

–100

10µs/div

OFFSET VOLTAGE PRODUCTION DISTRIBUTION

OPA244

OPA2244

0

100

300

500

700

900

1100

1300

1500

®

9

OPA244, 2244, 4244

TYPICAL PERFORMANCE CUR VES (Cont.)

At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted.

OFFSET VOLTAGE PRODUCTION DISTRIBUTION

35

30

25

OPA244

OPA2244

70

60

50

OPA4244

20

15

10

Percent of Amplifiers (%)

5

0

012345678910

VOS Drift (µV/°C)

40

30

20

Percent of Amplifiers (%)

10

0

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5.0 5.5

VOS Drift (µV/°C)

®

OPA244, 2244, 4244

10

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 0.01µF ceramic capacitors.

OPERATING VOLTAGE

The OPA244 can operate from single supply (+2.2V to
+36V) or dual supplies (±1.1 to ±18V) with excellent
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.

R

H

10Ω

I

R

1

38.3kΩ

H

R

3

38.3kΩ

High-Side

Current Sense

This allows a designer to have the same assured perfor­mance 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. Pa­rameters 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 Surface­Mount Devices,” easily found at Burr-Brown's web site
(http://www.burr-brown.com).

To Load

V

= 10 • IH • R

O

H

–In

+In

R

5

383kΩ

V+

A1

OPA244

Out

V+ for A1, A2

+

2.2V to 36V

(±1.1V to ±18V)

V– for A1, A2

R

6

10kΩ

R

L

10Ω

I

L

NOTE: Low and high-side sensing circuits can be used independently.

Optional for I

–In

+In

R

7

9.09kΩ

R

8

100kΩ

V+

A2

OPA244

V–

= R6 II R8)

(R

7

Out

Current Sense

Cancellation

B

FIGURE 1. Low and High-Side Battery Current Sensing.

R

20kΩ

Low-Side

V–

4

R

2

19.1kΩ
R

and R4 divide down the

2

common-mode input to A1.

Common-mode range of A2
extends to V– for low-side sensing.

VO = 10 • IL • R

To Load

L

11

®

OPA244, 2244, 4244