Datasheet
Operational Amplifiers
Low Current Consumption
Input/Output Full Swing
Operational Amplifier
BD12730G
●General
Description
BD12730 is a low supply voltage single operational
amplifier that operates from 1.8V to 5V. Its input and
output full swing, from ground to power supply level,
provides wide dynamic range. This amplifier features low
noise and high phase margin which makes it ideal for
audio applications, battery management and other
applications.
●Features
Low operating supply voltage
Input/Output Full Swing
Low input offset voltage
Low Power Consumption
High Phase margin
Low Input Referred Noise Voltage
●Application
Audio application
Buttery management
General Purpose
●Simplified
schematic
V+
●Key
Specifications
Low Operating Supply Voltage (Single Supply)
+1.8V to +5.0V
Wide Temperature Range:
-40°C to +85°C
Low Input Offset Voltage
5mV (Max.)
Slew Rate
0.4V/µs (Typ.)
Low Input Referred Noise Voltage 10
nV/ Hz
(Typ.)
Adequate Phase Margin
75°(Typ.)
●Package
SSOP5
W(Typ.) xD(Typ.) xH(Max.)
2.90mm x 2.80mm x 1.25mm
-IN
class
AB control
OUT
+IN
GND
Figure 1. Simplified schematic
○Product
structure：Silicon monolithic integrated circuit
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©2012 ROHM Co., Ltd. All rights reserved.
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○This
product is not designed to be protected against radioactive rays.
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BD12730G
●Pin
Configuration
SSOP5
IN+
Datasheet
1
+
5
V+
Pin No.
1
2
Symbol
IN+
GND
IN-
OUT
V+
GND
2
3
－
IN-
4
OUT
3
4
5
●Ordering
Information
B
D
1
2
7
3
0
G
-
TR
Packaging and forming specification
TR: Embossed tape and reel
(SSOP5)
Part Number
BD12730
Package
G: SSOP5
●Line-up
Topr
-40°C to +85°C
SSOP5
Package
Reel of 3000
Operable Part Number
BD12730G-TR
●Absolute
Maximum Ratings(Ta=25°C)
Parameter
Supply Voltage
Power dissipation
Differential Input Voltage
Input Common-mode
Voltage Range
Operating Supply Voltage
Operating Temperature
Storage Temperature
Maximum
Junction Temperature
*3
Symbol
V+
Pd
Vid
Vicm
Vopr
Topr
Tstg
Tjmax
Ratings
+7.0
675
*1*2
Unit
V
mW
V
V
V
°C
°C
°C
±1.0
GND to V+
+1.8 to +5.0
-40 to +85
-55 to +150
+150
Note: Absolute maximum rating of each item indicates the condition which must not be exceeded.
Application of voltage in excess of absolute maximum rating or usage out of absolute maximum rated
temperature environment may cause deterioration of characteristics.
*1
When used at temperature above Ta＝25℃, reduce by 5.4mW/℃.
*2
Mounted on a FR4 glass epoxy PCB (70mm×70mm×1.6mm).
*3
Differential input voltage is the voltage difference between inverting input and non-inverting input.
Input terminal voltage is set to more than GND.
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BD12730G
Datasheet
Description of electrical characteristics
Described here are the terms of electric characteristics used in this datasheet. Items and symbols used are also shown.
Note that item name, symbol and their meaning may differ from those on other manufacturer’s document or general
documents.
1. Absolute maximum ratings
Absolute maximum rating items indicate 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.
1.1 Supply Voltage (V+/GND)
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.
1.2 Differential Input Voltage (Vid)
Indicates the maximum voltage that can be applied between non-inverting terminal and inverting terminal without
deterioration and destruction of characteristics of IC.
1.3 Input Common-mode Voltage Range (Vicm)
Indicates the maximum voltage that can be applied to the non-inverting terminal and inverting terminal without
deterioration or destruction of characteristics. Input common-mode voltage range of the absolute maximum ratings
does not assure normal operation of IC. When normal Operation of IC is desired, the input common-mode voltage of
characteristics item must be followed.
1.4 Power dissipation (Pd)
Indicates the power that can be consumed by the IC when mounted on a specific board at ambient temperature 25°C (normal
temperature). As for the packaged product, Pd is determined by the temperature that can be permitted by the IC in the
package (maximum junction temperature) and the thermal resistance of the package
2. Electrical characteristics
2.1 Input offset voltage (Vio)
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 to 0 V.
2.2 Input offset current (Iio)
Indicates the difference of input bias current between non-inverting terminal and inverting terminal.
2.3 Input bias current (Ib)
Indicates the current that flows into or out of the input terminal. It is defined by the average of input bias currents at
non-inverting and inverting terminals.
2.4 Input Common Mode Voltage Range (Vicm)
Indicates the input voltage range where IC operates normally.
2.5 Maximum Output Voltage (High/Low Level Output Voltage) (VOH/VOL)
Indicates the voltage range that the IC can output under specified load condition. It is typically divided into high-level
output voltage and low-level output voltage. High-level output voltage indicates the upper limit of output voltage.
Low-level output voltage indicates the lower limit.
2.6 Voltage Gain (Av)
Indicates the amplification rate (gain) of the output voltage against the voltage difference between the non-inverting
and inverting terminals. It is normally the amplification rate (gain) with reference to DC voltage.
Av = (Output voltage fluctuation) / (Input offset fluctuation)
2.7 Operating current (ICC)
Indicates the current that flows within the IC under specified no-load conditions.
2.8 Unity Gain Bandwidth (f
T
)
Indicates the frequency where the voltage gain of Op-Amp is 1.
2.9 Phase Margin (θ)
Indicates the margin of phase from 180 degree phase lag at unity gain frequency.
2.10 Common Mode rejection ratio (CMRR)
Indicates the ratio of fluctuation of input offset voltage when the input common-mode voltage is changed. It is
normally the fluctuation of DC.
CMR = (Change of Input common-mode voltage)/(Input offset fluctuation)
2.11 Supply Voltage 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)
2.12 Equivalent Input Noise Voltage (Vn)
Indicates a noise voltage generated inside the operational amplifier reflected back to an ideal voltage source
connected in series with the input terminal.
2.13 Slew rate (SR)
Indicates the ratio of the change in output voltage with time when a step input signal is applied.
2.14 Output source current/ output sink current (Isource / Isink)
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.
2.15 Gain Band Width (GBW)
Indicates to multiply by the frequency and the gain where the voltage gain decreases 6dB/octave.
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Power technology
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