Datasheet
Operational Amplifiers
Input/Output Full Swing
Low Input Offset Voltage
Operational Amplifier
BD5291G
General Description
The BD5291G is ideally suited for sensor signal
conditioning. This feature input/output full-swing
operation with a supply voltage as low as 1.7V. In
addition, high common-mode rejection ratio, ultra low
input bias current (1pA typical) and low input offset
voltage increase the precision that can be achieved
using these operational amplifiers.
Key Specifications
Low Operating Supply Voltage (Single Supply):
+1.7V to +5.5V
Slew Rate:
2.5V/µs
-40°C to +85°C
Temperature Range:
Input Voltage Range:
VSS to VDD
Input Offset Voltage:
±2.5mV (Max)
Common Mode Rejection Ratio:
70dB (Min)
W(Typ) x D(Typ) x H(Max)
2.90mm x 2.80mm x 1.25mm
Features
Low Operating Supply Voltage
Input Output Fullswing
Low Input Offset Voltage
High Common Mode Rejection Ratio
High Slew Rate
Package
SSOP5
Applications
Buffer
Active Filter
Sensor Amplifier
Mobile Equipment
Pin Configuration
BD5291G : SSOP5
OUT 1
VSS
+IN
2
3
+ -
5
VDD
Pin No.
1
2
3
Pin Name
OUT
VSS
+IN
-IN
VDD
4
-IN
4
5
Figure 1. Pin Configuration
Package
SSOP5
BD5291G
○Product
structure：Silicon monolithic integrated circuit
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product is not designed protection against radioactive rays.
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BD5291G
Ordering Information
Datasheet
B
D
5
2
9
1
G
-
TL
Packaging and forming specification
TL: Embossed tape and reel
(SSOP5)
Part Number
BD5291
Package
G:SSOP5
Line-up
Topr
-40°C to +85°C
SSOP5
Package
Reel of 3000
Operable Part Number
BD5291G-TL
Absolute Maximum Ratings(T
A
=25°C)
Parameter
Supply voltage
Power dissipation
Differential input voltage
(Note 3)
Input common-mode
voltage range
Input current
(Note 4)
Operating supply voltage
Operating temperature
Storage temperature
Maximum
junction temperature
Symbol
VDD-VSS
P
D
SSOP5
V
ID
V
ICM
I
I
V
opr
T
opr
T
stg
T
Jmax
Ratings
+7
0.67
(Note 1,2)
VDD - VSS
(VSS – 0.3) to (VDD + 0.3 )
±10
+1.7 to +5.5
- 40 to +85
- 55 to +150
+150
Unit
V
W
V
V
mA
V
°C
°C
°C
(Note 1) To use at temperature above T
A
=25C reduce 5.4mW/°C.
(Note 2) Mounted on a FR4 glass epoxy PCB 70mm×70mm×1.6mm (Copper foil area less than 3%).
(Note 3) The voltage difference between inverting input and non-inverting input is the differential input voltage.
Then input pin voltage is set to more than VSS.
(Note 4) An excessive input current will flow when input voltages of more than VDD+0.6V or less than VSS-0.6V are applied.
The input current can be set to less than the rated current by adding a limiting resistor.
Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open
circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case
the IC is operated over the absolute maximum ratings.
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BD5291G
Electrical Characteristics
○BD5291G
(Unless otherwise specified VDD=+3.3V, VSS=0V, T
A
=25°C)
Limits
Temperature
Parameter
Symbol
Range
Min
Typ
Input offset voltage
(Note 5,6)
Input offset voltage drift
(Note 5)
Input offset current
(Note 5,6)
Input bias current
(Note 5,6)
Supply current
(Note 5,6)
Maximum output voltage(High)
(Note 6)
Datasheet
Unit
Max
2.5
3.8
-
220
1700
220
1700
900
970
-
-
VSS+0.1
VSS+0.1
-
-
-
-
1.8
3.3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
V
dB
dB
mA
mA
V/μs
MHz
MHz
deg
nV/ Hz
Condition
VDD=+1.8V ,+3.3V
-
-
-
RL=∞, Av=0dB, +IN=VDD/2
RL=10kΩ
RL=10kΩ
VDD=+1.8V
V
IO
ΔV
IO
/ΔT
I
IO
I
B
I
DD
V
OH
V
OL
25°C
Full range
Full range
25°C
Full range
25°C
Full range
25°C
Full range
25°C
Full range
25°C
Full range
25°C
Full range
25°C
Full range
-
-
-
-
-
-
-
-
-
VDD-0.1
VDD-0.1
-
-
80
80
80
80
0
0
70
68
70
68
4
-
9
-
-
-
0.1
-
0.8
1
-
1
-
650
-
-
-
-
-
105
-
110
-
-
-
90
-
90
-
6
17
15
35
2.5
3.0
3.2
40
18
0.005
mV
μV/°C
pA
pA
μA
V
V
Maximum output voltage(Low)
(Note 6)
Large signal voltage gain
(Note 6)
A
V
dB
VDD=+3.3V
VDD=+1.8V, VSS to VDD
VDD=+3.3V, VSS to VDD
-
-
OUT=VDD-0.4V
output current
OUT=VSS+0.4V
output current
CL=25pF
VDD=+1.8V, f=100kHz,
Open loop
VDD=+3.3V, f=100kHz,
Open loop
Open loop
Av=40dB, f=1kHz
OUT=0.4V
P-P
, f=1kHz
Input common mode voltage
Common mode
(Note 6)
rejection ratio
Power supply
rejection ratio
(Note 6)
Output source current
(Note 7)
Output sink current
(Note 7)
Slew rate
V
ICM
CMRR
PSRR
I
source
I
sink
SR
25°C
25°C
Full range
25°C
Full range
25°C
25°C
25°C
Gain bandwidth
GBW
25°C
-
Phase margin
Input referred noise voltage
Total harmonics distortion
θ
Vn
THD+N
25°C
25°C
25°C
-
-
-
%
(Note 5) Absolute value
(Note 6) Full range: T
A
=-40°C to +85°C
(Note 7) Under the high temperature environment, consider the power dissipation of IC when selecting the output current.
When the terminal short circuits are continuously output, the output current is reduced to climb to the temperature inside IC.
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BD5291G
Description of electrical characteristics
Datasheet
Described here are the terms of electric characteristics used in this datasheet. Items and symbols used are also shown.
Note that item name and symbol and their meaning may differ from those on another manufacture’s document or general
document.
1. Absolute maximum ratings
Absolute maximum rating item indicates the condition which must not be exceeded. Application of voltage in excess of absolute
maximum rating or use out of absolute maximum rated temperature environment may cause deterioration of characteristics.
(1) Power supply voltage (VDD/VSS)
Indicates the maximum voltage that can be applied between the positive power supply terminal and negative power
supply terminal without deterioration or destruction of characteristics of internal circuit.
(2) Differential input voltage (V
ID
)
Indicates the maximum voltage that can be applied between non-inverting terminal and inverting terminal without
deterioration and destruction of characteristics of IC.
(3) Input common-mode voltage range (V
ICM
)
Indicates the maximum voltage that can be applied to non-inverting terminal and inverting terminal without
deterioration or destruction of characteristics. Input common-mode voltage range of the maximum ratings not assures
normal operation of IC. When normal Operation of IC is desired, the input common-mode voltage of characteristics
item must be followed.
(4) Power dissipation (P
D
)
Indicates the power that can be consumed by specified mounted board at the ambient temperature 25°C(normal temperature).
As for package product, Pd is determined by the temperature that can be permitted by IC chip in the package
(maximum junction temperature) and thermal resistance of the package.
2.Electrical characteristics item
(1) Input offset voltage (V
IO
)
Indicates the voltage difference between non-inverting terminal and inverting terminal. It can be translated into the
input voltage difference required for setting the output voltage at 0 V.
(2) Input offset voltage drift (△V
IO
/△T)
Denotes the ratio of the input offset voltage fluctuation to the ambient temperature fluctuation.
(3) Input offset current (I
IO
)
Indicates the difference of input bias current between non-inverting terminal and inverting terminal.
(4) Input bias current (I
B
)
Indicates the current that flows into or out of the input terminal. It is defined by the average of input bias current at
non-inverting terminal and input bias current at inverting terminal.
(5) Supply current (IDD)
Indicates the IC current that flows under specified conditions and no-load steady status.
(6) Maximum Output Voltage(High) / Maximum Output Voltage(Low) (V
OH
/V
OL
)
Indicates the voltage range that can be output by the IC under specified load condition. It is typically divided into
maximum output voltage High and low. Maximum output voltage high indicates the upper limit of output voltage.
Maximum output voltage low indicates the lower limit.
(7) Large signal voltage gain (Av)
Indicates the amplifying rate (gain) of output voltage against the voltage difference between non-inverting terminal
and inverting terminal. It is normally the amplifying rate (gain) with reference to DC voltage.
Av = (Output voltage) / (Differential Input voltage)
(8) Input common-mode voltage range (V
ICM
)
Indicates the input voltage range where IC operates normally.
(9) Common-mode rejection ratio (CMRR)
Indicates the ratio of fluctuation of input offset voltage when in-phase input voltage is changed. It is normally the
fluctuation of DC.
CMRR = (Change of Input common-mode voltage)/(Input offset fluctuation)
(10) Power supply rejection ratio (PSRR)
Indicates the ratio of fluctuation of input offset voltage when supply voltage is changed. It is normally the fluctuation of
DC. PSRR= (Change of power supply voltage)/(Input offset fluctuation)
(11) Output source current/ output sink current (I
source
/ I
sink
)
The maximum current that can be output under specific output conditions, it is divided into output source current and
output sink current. The output source current indicates the current flowing out of the IC, and the output sink current
the current flowing into the IC.
(12) Slew Rate (SR)
SR is a parameter that shows movement speed of operational amplifier. It indicates rate of variable output voltage
as unit time.
(13) Gain Bandwidth (GBW)
Indicates to multiply by the frequency and the gain where the voltage gain decreases 6dB/octave.
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15
½
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