OPA2244PA [BB]
MicroPower, Single-Supply OPERATIONAL AMPLIFIERS MicroAmplifier ⑩ Series; 微功耗，单电源运算放大器MicroAmplifier ⑩系列
| 型号： | OPA2244PA |
| 厂家： | 
BURR-BROWN CORPORATION |
| 描述： | MicroPower, Single-Supply OPERATIONAL AMPLIFIERS MicroAmplifier ⑩ Series |
| 文件： | 总11页 (文件大小：226K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
OPA244
OPA2244
OPA244
OPA2244
OPA4244
OPA244
®
OPA4244
OPA2244
MicroPower, Single-Supply
OPERATIONAL AMPLIFIERS
™
MicroAmplifier Series
FEATURES
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.
● MicroSIZE PACKAGES
OPA244 (Single): SOT-23-5
OPA2244 (Dual): MSOP-8
OPA4244 (Quad): TSSOP-14
● MicroPOWER: IQ = 50µA/channel
● SINGLE SUPPLY OPERATION
● WIDE BANDWIDTH: 430kHz
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 perfor-
mance 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 applica-
tions. All versions have similar performance. However, there
are some differences, such as common-mode rejection. All
versions are interchangeable in most applications.
● WIDE SUPPLY RANGE:
Single Supply: 2.2V to 36V
Dual Supply: ±1.1V to ±18V
APPLICATIONS
● BATTERY POWERED SYSTEMS
● PORTABLE EQUIPMENT
● PCMCIA CARDS
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.
● BATTERY PACKS AND POWER SUPPLIES
● CONSUMER PRODUCTS
OPA244
Out
V–
1
2
3
5
4
V+
+In
–In
OPA4244
SOT-23-5
Output A
–Input A
+Input A
+V
1
2
3
4
5
6
7
14 Output D
13 –Input D
12 +Input D
11 –V
OPA2244
OPA244
NC
NC
–In
+In
V–
1
2
3
4
8
Out A
1
8
7
6
5
V+
A
V+
7
6
5
–In A
+In A
V–
2
3
4
Out B
–In B
+In B
+Input B
–Input B
Output B
10 +Input C
B
Output
NC
9
8
–Input C
Output C
8-Pin DIP, SO-8
8-Pin DIP, SO-8, MSOP-8
TSSOP-14
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1999 Burr-Brown Corporation
PDS-1437C
Printed in U.S.A. December, 1999
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(1)
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
TA = –40°C to 85°C
vs Temperature
vs Power Supply
TA = –40°C to 85°C
VOS
VS = ±7.5V, VCM = 0
±0.7
±1.5
±2
mV
mV
µV/°C
µV/V
µV/V
dVOS/dT
PSRR
TA = –40°C to 85°C
VS = +2.6V to +36V
VS = +2.6V to +36V
±4
5
50
50
INPUT BIAS CURRENT
Input Bias Current
Input Offset Current
IB
IOS
VCM = VS/2
VCM = VS/2
–10
±1
–25
±10
nA
nA
NOISE
Input Voltage Noise, f = 0.1kHz to 10kHz
Input Voltage Noise Density, f = 1kHz
Current Noise Density, f = 1kHz
0.4
22
40
µVp-p
nV/√Hz
fA/√Hz
en
in
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
VCM
0
(V+) – 0.9
V
Common-Mode Rejection
TA = –40°C to 85°C
CMRR
VS = ±18V, VCM = –18V to +17.1V
VS = ±18V, VCM = –18V to +17.1V
84
84
98
dB
dB
INPUT IMPEDANCE
Differential
Common-Mode
106 || 2
109 || 2
Ω || pF
Ω || pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain
TA = –40°C to 85°C
AOL
VO = 0.5V to (V+) – 0.9
VO = 0.5V to (V+) – 0.9
86
86
106
dB
dB
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time 0.01%
Overload Recovery Time
GBW
SR
430
–0.1/+0.16
150
kHz
V/µs
µs
G = 1
10V Step
VIN • Gain = VS
8
µs
OUTPUT
Voltage Output, Positive
TA = –40°C to 85°C
Voltage Output, Negative
TA = –40°C to 85°C
Voltage Output, Positive
TA = –40°C to 85°C
Voltage Output, Negative
TA = –40°C to 85°C
Short-Circuit Current
Capacitive Load Drive
VO
A
A
A
A
OL ≥ 80dB, RL = 20kΩ to VS/2
OL ≥ 80dB, RL = 20kΩ to VS/2
OL ≥ 80dB, RL = 20kΩ to VS/2
OL ≥ 80dB, RL = 20kΩ to VS/2
(V+) – 0.9
(V+) – 0.9
0.5
(V+) – 0.75
(V+) – 0.75
0.2
V
V
V
V
V
V
V
V
mA
0.5
0.2
A
A
A
A
OL ≥ 80dB, RL = 20kΩ to Ground
OL ≥ 80dB, RL = 20kΩ to Ground
OL ≥ 80dB, RL = 20kΩ to Ground
OL ≥ 80dB, RL = 20kΩ to Ground
(V+) – 0.75
(V+) – 0.75
0.1
0.1
ISC
CLOAD
–25/+12
See Typical Curve
POWER SUPPLY
Specified Voltage Range
Minimum Operating Voltage
Quiescent Current
VS
IQ
TA = –40°C to 85°C
+2.6
+36
V
V
µA
µA
+2.2
50
IO = 0
IO = 0
60
70
TA = –40°C to 85°C
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
–40
–55
–65
85
125
150
°C
°C
°C
Thermal Resistance
SOT-23-5 Surface-Mount
SO-8 Surface-Mount
8-Pin DIP
θJA
200
150
100
°C/W
°C/W
°C/W
NOTE: (1) VS = +15V.
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.
®
2
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.
OPA2244EA, PA, UA
PARAMETER
CONDITION
MIN
TYP(1)
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
TA = –40°C to 85°C
vs Temperature
vs Power Supply
TA = –40°C to 85°C
Channel Separation
VOS
VS = ±7.5V, VCM = 0
±0.7
±1.5
±2
mV
mV
µV/°C
µV/V
µV/V
dB
dVOS/dT
PSRR
TA = –40°C to 85°C
VS = +2.6V to +36V
VS = +2.6V to +36V
±4
5
50
50
140
INPUT BIAS CURRENT
Input Bias Current
Input Offset Current
IB
IOS
VCM = VS/2
VCM = VS/2
–10
±1
–25
±10
nA
nA
NOISE
Input Voltage Noise, f = 0.1kHz to 10kHz
Input Voltage Noise Density, f = 1kHz
Current Noise Density, f = 1kHz
0.4
22
40
µVp-p
nV/√Hz
fA/√Hz
en
in
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
VCM
0
(V+) – 0.9
V
Common-Mode Rejection
TA = –40°C to 85°C
CMRR
VS = ±18V, VCM = –18V to +17.1V
VS = ±18V, VCM = –18V to +17.1V
72
72
98
dB
dB
INPUT IMPEDANCE
Differential
Common-Mode
106 || 2
109 || 2
Ω || pF
Ω || pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain
TA = –40°C to 85°C
AOL
VO = 0.5V to (V+) – 0.9
VO = 0.5V to (V+) – 0.9
86
86
106
dB
dB
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time 0.01%
Overload Recovery Time
GBW
SR
430
–0.1/+0.16
150
kHz
V/µs
µs
G = 1
10V Step
VIN • Gain = VS
8
µs
OUTPUT
Voltage Output, Positive
TA = –40°C to 85°C
Voltage Output, Negative
TA = –40°C to 85°C
Voltage Output, Positive
TA = –40°C to 85°C
Voltage Output, Negative
TA = –40°C to 85°C
Short-Circuit Current
Capacitive Load Drive
VO
A
A
A
A
OL ≥ 80dB, RL = 20kΩ to VS/2
OL ≥ 80dB, RL = 20kΩ to VS/2
OL ≥ 80dB, RL = 20kΩ to VS/2
OL ≥ 80dB, RL = 20kΩ to VS/2
(V+) – 0.9
(V+) – 0.9
0.5
(V+) – 0.75
(V+) – 0.75
0.2
V
V
V
V
V
V
V
V
mA
0.5
0.2
AOL ≥ 80dB, RL = 20kΩ to Ground
AOL ≥ 80dB, RL = 20kΩ to Ground
AOL ≥ 80dB, RL = 20kΩ to Ground
AOL ≥ 80dB, RL = 20kΩ to Ground
(V+) – 0.75
(V+) – 0.75
0.1
0.1
ISC
CLOAD
–25/+12
See Typical Curve
POWER SUPPLY
Specified Voltage Range
Minimum Operating Voltage
Quiescent Current (per amplifier)
TA = –40°C to 85°C
VS
IQ
TA = –40°C to 85°C
+2.6
+36
V
V
µA
µA
+2.2
40
IO = 0
IO = 0
50
63
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
–40
–55
–65
85
125
150
°C
°C
°C
Thermal Resistance
MSOP-8 Surface-Mount
SO-8 Surface-Mount
8-Pin DIP
θJA
200
150
100
°C/W
°C/W
°C/W
NOTE: (1) VS = +15V.
®
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(1)
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
TA = –40°C to 85°C
vs Temperature
vs Power Supply
TA = –40°C to 85°C
Channel Separation
VOS
VS = ±7.5V, VCM = 0
±0.7
±1.5
±2
mV
mV
µV/°C
µV/V
µV/V
dB
dVOS/dT
PSRR
TA = –40°C to 85°C
VS = +2.6V to +36V
VS = +2.6V to +36V
±4
5
50
50
140
INPUT BIAS CURRENT
Input Bias Current
Input Offset Current
IB
IOS
VCM = VS/2
VCM = VS/2
–10
±1
–25
±10
nA
nA
NOISE
Input Voltage Noise, f = 0.1kHz to 10kHz
Input Voltage Noise Density, f = 1kHz
Current Noise Density, f = 1kHz
0.4
22
40
µVp-p
nV/√Hz
fA/√Hz
en
in
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
VCM
0
(V+) – 0.9
V
Common-Mode Rejection
TA = –40°C to 85°C
CMRR
VS = ±18V, VCM = –18V to +17.1V
VS = ±18V, VCM = –18V to +17.1V
82
82
104
dB
dB
INPUT IMPEDANCE
Differential
Common-Mode
106 || 2
109 || 2
Ω || pF
Ω || pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain
TA = –40°C to 85°C
AOL
VO = 0.5V to (V+) – 0.9
VO = 0.5V to (V+) – 0.9
86
86
106
dB
dB
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time 0.01%
Overload Recovery Time
GBW
SR
430
–0.1/+0.16
150
kHz
V/µs
µs
G = 1
10V Step
VIN • Gain = VS
8
µs
OUTPUT
Voltage Output, Positive
TA = –40°C to 85°C
Voltage Output, Negative
TA = –40°C to 85°C
Voltage Output, Positive
TA = –40°C to 85°C
Voltage Output, Negative
TA = –40°C to 85°C
Short-Circuit Current
Capacitive Load Drive
VO
A
A
A
A
OL ≥ 80dB, RL = 20kΩ to VS/2
OL ≥ 80dB, RL = 20kΩ to VS/2
OL ≥ 80dB, RL = 20kΩ to VS/2
OL ≥ 80dB, RL = 20kΩ to VS/2
(V+) – 0.9
(V+) – 0.9
0.5
(V+) – 0.75
(V+) – 0.75
0.2
V
V
V
V
V
V
V
V
mA
0.5
0.2
AOL ≥ 80dB, RL = 20kΩ to Ground
AOL ≥ 80dB, RL = 20kΩ to Ground
AOL ≥ 80dB, RL = 20kΩ to Ground
AOL ≥ 80dB, RL = 20kΩ to Ground
(V+) – 0.75
(V+) – 0.75
0.1
0.1
ISC
CLOAD
–25/+12
See Typical Curve
POWER SUPPLY
Specified Voltage Range
Minimum Operating Voltage
Quiescent Current (per amplifier)
TA = –40°C to 85°C
VS
IQ
TA = –40°C to 85°C
+2.6
+36
V
V
µA
µA
+2.2
40
IO = 0
IO = 0
60
70
TEMPERATURE RANGE
Specified Range
Operating Range
–40
–55
–65
85
125
150
°C
°C
°C
Storage Range
Thermal Resistance
TSSOP-14 Surface Mount
θJA
100
°C/W
NOTE: (1) VS = +15V.
®
4
OPA244, 2244, 4244
ABSOLUTE MAXIMUM RATINGS(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.
Supply Voltage, V+ to V– .................................................................... 36V
Input Voltage Range(2) ................................... (V–) – 0.3V to (V+) + 0.3V
Input Current(2) ................................................................................. 10mA
Output Short-Circuit(3) .............................................................. Continuous
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
ESD damage can range from subtle performance degrada-
tion 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.
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may de-
grade 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.
PACKAGE/ORDERING INFORMATION
PACKAGE
DRAWING
NUMBER
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER(1)
TRANSPORT
MEDIA
PRODUCT
PACKAGE
Single
OPA244NA
SOT-23-5 Surface-Mount
331
"
006
182
"
–40°C to +85°C
A44
"
OPA244PA
OPA244UA
"
OPA244NA/250
OPA244NA/3K
OPA244PA
OPA244UA
OPA244UA/2K5
Tape and Reel
Tape and Reel
Rails
Rails
Tape and Reel
"
OPA244PA
OPA244UA
"
"
"
8-Pin DIP
–40°C to +85°C
–40°C to +85°C
"
SO-8 Surface-Mount
"
Dual
OPA2244EA
MSOP-8 Surface-Mount
337
"
006
182
"
–40°C to +85°C
A44
"
OPA2244PA
OPA2244UA
"
OPA2244EA/250
OPA2244EA/2K5
OPA2244PA
OPA2244UA
OPA2244UA/2K5
Tape and Reel
Tape and Reel
Rails
Rails
Tape and Reel
"
"
"
OPA2244PA
OPA2244UA
"
8-Pin DIP
–40°C to +85°C
–40°C to +85°C
"
SO-8 Surface-Mount
"
Quad
OPA4244EA
TSSOP-14 Surface-Mount
357
"
–40°C to +85°C
OPA4244EA
OPA4244EA/250
OPA4244EA/2K5
Tape and Reel
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.
®
5
OPA244, 2244, 4244
TYPICAL PERFORMANCE CURVES
At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted.
CHANNEL SEPARATION
OPEN-LOOP GAIN AND PHASE vs FREQUENCY
160
150
140
130
120
110
100
90
180
160
140
120
100
80
0
–20
All Models
–40
–60
Phase
–80
OPA244
OPA2244
–100
–120
–140
–160
–180
–200
OPA4244
60
Gain
40
20
80
0
70
–20
60
1
10
100
1k
Frequency (Hz)
10k
100k
1M
1
10
100
1k
10k
100k
Frequency (Hz)
POWER SUPPLY AND COMMON-MODE REJECTION vs FREQUENCY
110
100
90
120
OPA4244
110
100
90
OPA244
80
OPA2244
80
70
60
50
40
30
CMRR
CMRR
70
60
50
PSRR
40
PSRR
30
1
10
100
1k
Frequency (Hz)
10k
100k
1M
10
100
1k
10k
100k
1M
Frequency (Hz)
OPEN-LOOP GAIN vs LOAD RESISTANCE
VO = ±5V
OUTPUT VOLTAGE SWING vs OUTPUT CURRENT
RL to VS/2
15
14
13
12
11
10
120
110
100
90
25°C
125°C
–55°C
–10
–11
–12
–13
–14
–15
–55°C
125°C
80
70
25°C
60
1
10
100
0
±2
±4
±6
±8
±10
±12
±14
Load (kΩ)
Output Current (mA)
®
6
OPA244, 2244, 4244
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted.
INPUT BIAS CURRENT
vs INPUT COMMON-MODE VOLTAGE
INPUT BIAS CURRENT vs TEMPERATURE
–12
–10
–8
–12
–11
–10
–9
–IB
+IB
–8
–6
–7
–4
–6
–2
–5
–15
–75
0
–10
–5
0
5
10
15
125
36
–75
–50
–25
0
25
50
75
100
125
Common-Mode Voltage (V)
Temperature (°C)
AOL, CMRR, PSRR vs TEMPERATURE
SLEW RATE vs TEMPERATURE
+SR
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0.00
125
120
115
110
105
100
95
PSRR
CMRR
–SR
VS = ±7.5, RL = 20kΩ,
CL = 100pF, Gain = +1
AOL
90
85
80
–75
–25
75
125
175
25
–50
–25
0
25
50
75
100
Temperature(°C)
Temperature (°C)
COMMON-MODE REJECTION
vs SUPPY VOLTAGE
QUIESCENT CURRENT AND SHORT-CIRCUIT
vs SUPPLY VOLTAGE
120
100
80
60
40
20
0
52
48
44
40
36
32
28
24
35
30
25
20
15
10
5
IQ
–ISC
+ISC
0
4
8
12
16
20
24
28
32
0
4
8
12
16
20
24
28
32
36
Suppy Voltage (V)
Supply Voltage (V)
®
7
OPA244, 2244, 4244
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted.
QUIESCENT AND SHORT-CIRCUIT CURRENT vs TEMPERATURE
65
60
55
50
45
40
35
30
25
±40
60
55
50
45
40
35
30
20
–30
–25
–20
–15
+15
+10
+5
OPA244
OPA4244
±35
±30
±25
±20
±15
±10
±5
OPA2244
–ISC
–ISC
IQ
IQ
+ISC
+ISC
0
0
–75
–50
–25
0
25
50
75
100
125
–75
–50
–25
0
25
50
75
100
125
Temperature (°C)
Temperature (°C)
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
VS = 36V
1000
100
10
1000
100
10
40
35
30
25
20
15
10
5
Current Noise
VS =15V
Voltage Noise
VS = 2.7V
1
1
0
1
10
100
1k
10k
100k
100
1k
10k
100k
1M
Frequency(Hz)
Frequency (Hz)
SMALL SIGNAL OVERSHOOT vs LOAD CAPACITANCE
60
50
40
30
20
10
0
70%
OPA4244
OPA244
OPA2244
60%
G = +1
G = –2
50%
40%
30%
20%
10%
0%
G = –1
G = +1, RL = ∞
G = +3
G = +1, RL = 20kΩ
G = +2, RL = 20kΩ
G = +3, RL = 20kΩ
10
100
1k
10k
100
1k
10k
Load Capacitance (pF)
Load Capacitance (pF)
®
8
OPA244, 2244, 4244
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted.
LARGE-SIGNAL STEP RESPONSE, G = 1, CL = 100pF
OPA244
OPA4244
OPA2244
50µs/div
25µs/div
SMALL-SIGNAL STEP RESPONSE, G = 1, CL = 100pF
OPA244
OPA4244
OPA2244
10µs/div
10µs/div
OFFSET VOLTAGE PRODUCTION DISTRIBUTION
12
10
8
30
25
20
15
10
5
OPA244
OPA4244
OPA2244
6
4
2
0
0
Offset Voltage (µV)
Offset Voltage (µV)
®
9
OPA244, 2244, 4244
TYPICAL PERFORMANCE CURVES (Cont.)
At TA = 25°C, VS = +15V, and RL = 20kΩ connected to Ground, unless otherwise noted.
OFFSET VOLTAGE PRODUCTION DISTRIBUTION
35
30
25
20
15
10
5
70
60
50
40
30
20
10
0
OPA244
OPA4244
OPA2244
0
0
1
2
3
4
5
6
7
8
9
10
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5 5.0 5.5
VOS Drift (µV/°C)
VOS Drift (µV/°C)
®
10
OPA244, 2244, 4244
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.
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.
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).
RH
10Ω
To Load
R5
383kΩ
IH
R3
38.3kΩ
High-Side
Current Sense
R1
V+
38.3kΩ
–In
+In
Out
A1
OPA244
VO = 10 • IH • RH
V+ for A1, A2
V–
R4
20kΩ
R2
19.1kΩ
+
R2 and R4 divide down the
common-mode input to A1.
2.2V to 36V
(±1.1V to ±18V)
R8
100kΩ
V– for A1, A2
V+
–In
A2
OPA244
Out
VO = 10 • IL • RL
+In
Low-Side
Current Sense
V–
R7
9.09kΩ
Common-mode range of A2
extends to V– for low-side sensing.
R6
10kΩ
RL
10Ω
Optional for IB Cancellation
(R7 = R6 II R8)
To Load
IL
NOTE: Low and high-side sensing circuits can be used independently.
FIGURE 1. Low and High-Side Battery Current Sensing.
®
11
OPA244, 2244, 4244
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