Data Sheet

HT9231/HT9232/HT9234
Operation Amplifier
Features
General Description
• Operating Voltage: 2.0V to 5.5V
The Holtek HT9231/HT9232/HT9234 range of
Operational Amplifiers operate with a single supply
voltage as low as 2.0V and offer a low supply current
of only 220μA/amplifier. In offering rail-to-rail output
voltage the devices can operate with a maximum
voltage range. The devices also provide a gain
bandwidth product of 2.3MHz and are also unity gain
stable. These products are suitable for a wide range of
analog signal processing applications but especially
suitable for the portable device and battery powered
equipment application areas.
• Supply Current: 220μA/amplifier typical
• Rail-to-Rail Output
• Gain Bandwidth: 2.3MHz typical
• Unity Gain Stable
• Available in Single, Dual and Quad Op's package
types
• Package type:
♦♦ HT9231: SOT23-5
♦♦ HT9232: 8-pin DIP/SOP
♦♦ HT9234: 14-pin DIP/SOP
Selection Table
Applications
• Automotive
• Portable Equipment
• Photo diode Amplifier
Part No.
Amplifiers
Package
HT9231
1
SOT23-5
HT9232
2
8DIP/SOP
HT9234
4
14DIP/SOP
• Analog Filters
• Notebooks and PDAs
• Battery Powered Systems
Block Diagram
Pin Assignment
Rev. 1.20
1
October 07, 2013
HT9231/HT9232/HT9234
Pin Descriptions
HT9231
Pin No.
Pin Name
1
OUT
Analog output
Description
2
VSS
Negative power supply
3
IN+
Non-inverting input
4
IN-
Inverting input
5
VDD
Pin No.
Pin Name
1
1OUT
Analog output (operation amplifier 1)
2
1IN-
Inverting input (operation amplifier 1)
3
1IN+
Non-inverting input (operation amplifier 1)
4
VSS
Negative power supply
5
2IN+
Non-inverting input (operation amplifier 2)
6
2IN-
Inverting input (operation amplifier 2)
7
2OUT
Analog output (operation amplifier 2)
8
VDD
Positive power supply
Pin No.
Pin Name
1
1OUT
Analog output (operation amplifier 1)
2
1IN-
Inverting input (operation amplifier 1)
3
1IN+
Non-inverting input (operation amplifier 1)
4
VDD
Positive power supply
5
2IN+
Non-inverting input (operation amplifier 2)
6
2IN-
Inverting input (operation amplifier 2)
7
2OUT
Analog output (operation amplifier 2)
8
3OUT
Analog output (operation amplifier 3)
9
3IN-
Inverting input (operation amplifier 3)
10
3IN+
Non-inverting input (operation amplifier 3)
11
VSS
Negative power supply
12
4IN+
Non-inverting input (operation amplifier 4)
13
4IN-
Inverting input (operation amplifier 4)
14
4OUT
Analog output (operation amplifier 4)
Positive power supply
HT9232
Description
HT9234
Rev. 1.20
Description
2
October 07, 2013
HT9231/HT9232/HT9234
Absolute Maximum Ratings
Supply Voltage ......................................................6.0V
Input Voltage ............................... VSS-0.3V~VDD+0.3V
Difference Input Voltage ............................ ±(VDD-VSS)
ESD protection on all pins (HBM;MM)....≥4kV; 400V
Storage Temperature......................... −65°C to +150°C
Operating Temperature......................... −40°C to 85°C
Junction Temperature.......................................... 150°C
Note: These are stress ratings only. Stresses exceeding the range specified under ″Absolute Maximum Ratings″
may cause substantial damage to the device. Functional operation of this device at other conditions beyond
those listed in the specification is not implied and prolonged exposure to extreme conditions may affect
device reliability.
Electrical Characteristics
Unless otherwise indicated, VSS=GND, Ta=25°C, VCM=VDD/2, VL=VDD/2, and RL=10kΩ to VL, CL=60pF
Symbol
Parameter
Test Conditions
VDD
Conditions
—
Min.
Typ.
Max.
Unit
2.0
—
5.5
V
VDD
Supply Voltage
—
VOS
Input Offset Voltage
5V
VIN=VCM/2
−5.0
—
5.0
mV
∆VOS/∆T Drift with Temperature
5V
VIN=VCM/2
—
±2
—
mV/°C
IOS
Input Offset Current
5V
Ta=25°C
—
±5
—
pA
IB
Input Bias Current
5V
Ta=25°C
—
±50
—
pA
VCM
Input Common Mode Range
5V
0
—
VDD−1.4
V
VOH
Maximum Output Voltage Swing
5V
0.5V input overdrive
RL=10kW to VL
VSS+50
—
VDD−100
mV
VOL
Maximum Output Voltage Swing
5V
0.5V input overdrive
RL=2kW to VL
VSS+150
—
VDD−250
mV
AOL
DC Open-Loop Gain (large signal)
5V
VOUT=0.2V to VDD− 0.2V,
VIN=VCM/2
70
100
—
dB
GBW
Gain BandWidth Product
5V
RL=10kW, CL=60pF,
VIN=VCM/2
—
2.3
—
MHz
Φm
Phase Margin
5V
RL=10kW, CL=60pF
G=+1V/V, VIN+= VDD/2
—
63
—
°
CMRR
Common Mode Rejection Ratio
5V
VCM=0V to VDD− 1.4V
60
90
—
dB
PSRR
Power Supply Rejection Ratio
5V
VCM = 0.2V
65
95
—
dB
ICC
Supply Current Per Single Amplifier
5V
Io=0A
100
220
340
mA
SR
Slew Rate at Unity Gain
5V
RL=10kW, CL=60pF
—
2
—
V/ms
IO_SOURCE Output Short Circuit Source Current
5V
VIN+ − VIN- ≥ 10mV
−5.0
−9.0
—
mA
IO_SINK
5V
VIN- − VIN+ ≥ 10mV
5.5
9.5
—
mA
Rev. 1.20
Output Short Circuit Sink Current
—
3
October 07, 2013
HT9231/HT9232/HT9234
Functional Description
Input Stage
Output Stage
As the input stage of these op-amps is a PMOS
differential amplifiers, the amplifiers can offer an
extended common mode low input voltage down to
VSS-0.6V. At the other end of the voltage spectrum,
the common mode input voltage has to be maintained
at a level below VDD-1.4 to keep the input devices, M2
and M3, in their active region. This implies that when
using HT9231/HT9232/HT9234 in voltage follower
applications, the inputs as well as the output active
range will be limited between VSS~VDD-1V (approx.).
It is necessary to avoid applying any voltage greater
than VDD+0.6V or less than VSS-0.6V to the input pins,
otherwise the internal input protection devices may be
damaged
The devices use a push-pull CMOS configuration
for the op-amp output stage to minimise power
consumption and to provide adequate output drive
currents. Note that the output is an unbuffered
structure, therefore the open loop gain will be affected
by the load resistor since the voltage gain of this stage
is expressed as (gm5+ gm6)×RL.
V
B IA S
M 1
N o n in v e r tin g In
M 2
P M O S
M 4
M 3
P M O S
M 5
V
The HT9231/HT9232/HT9234 is internally
compensated for AC stability and can drive capacitive
loads of up to 60pF.
S S
Since the input impedance of a PMOS transistor is
inherently very high, they can be directly coupled
to high impedance elements without loading effects.
Examples could be coupling to ceramic transducers,
integrating capacitors and resistor networks. It is this
high input impedance characteristic that is its major
advantage over its bipolar counterpart in certain
application fields such as integrators where op-amp
input currents can cause significant errors.
Rev. 1.20
To keep power consumption to a minimum, the output
short circuit current is limited to about -9mA for the
source drive and 9.5mA for the sink drive. This is
considered to be enough for most low power systems,
however it is recommended only to used load resistors
of >10kΩ for most applications. For heavy load
driving applications, an external buffer stage using
bipolar transistors is recommended.
T o O u tp u t S ta g e
S S
In v e r tin g In
V
D D
V
4
October 07, 2013
HT9231/HT9232/HT9234
Application Circuits
Difference Amplifier Circuit
Two Op Amp Instrumentation Amplifier
Rev. 1.20
5
October 07, 2013
HT9231/HT9232/HT9234
Package Information
Note that the package information provided here is for consultation purposes only. As this information may be
updated at regular intervals users are reminded to consult the Holtek website for the latest version of the package
information.
Additional supplementary information with regard to packaging is listed below. Click on the relevant section to be
transferred to the relevant website page.
• Further Package Information (include Outline Dimensions, Product Tape and Reel Specifications)
• Packing Meterials Information
• Carton information
• PB FREE Products
• Green Packages Products
Rev. 1.20
6
October 07, 2013
HT9231/HT9232/HT9234
5-pin SOT23-5 Outline Dimensions
Symbol
Min.
Nom.
Max.
A
0.030
—
0.031
A1
0.000
—
0.002
A2
0.028
0.030
0.031
b
0.014
—
0.020
C
0.004
—
0.008
D
—
0.114 BSC
—
E
—
0.110 BSC
—
E1
—
0.063 BSC
—
e
—
0.037 BSC
—
e1
—
0.075 BSC
—
L
0.015
0.018
0.024
L1
—
0.024 BSC
—
θ
0°
—
8°
Symbol
Rev. 1.20
Dimensions in inch
Dimensions in mm
Min.
Nom.
Max.
A
0.75
—
0.80
A1
0.00
—
0.05
A2
0.70
0.75
0.78
b
0.35
—
0.50
C
0.10
—
0.20
D
—
2.90 BSC
—
E
—
2.80 BSC
—
E1
—
1.60 BSC
—
e
—
0.95 BSC
—
e1
—
1.90 BSC
—
L
0.37
0.45
0.60
L1
—
0.60 BSC
—
θ
0°
—
8°
7
October 07, 2013
HT9231/HT9232/HT9234
8-pin DIP (300mil) Outline Dimensions
Symbol
Nom.
Max.
A
0.355
0.365
0.400
B
0.240
0.250
0.280
C
0.115
0.130
0.195
D
0.115
0.130
0.150
E
0.014
0.018
0.022
F
0.045
0.060
0.070
G
—
0.100 BSC
—
H
0.300
0.310
0.325
I
—
—
0.430
Symbol
Rev. 1.20
Dimensions in inch
Min.
Dimensions in mm
Min.
Nom.
Max.
A
9.02
9.27
10.16
B
6.10
6.35
7.11
C
2.92
3.30
4.95
D
2.92
3.30
3.81
E
0.36
0.46
0.56
F
1.14
1.52
1.78
G
—
2.54 BSC
—
H
7.26
7.87
8.26
I
—
—
10.92
8
October 07, 2013
HT9231/HT9232/HT9234
14-pin DIP (300mil) Outline Dimensions
Symbol
Min.
Nom.
Max.
A
0.735
0.750
0.775
B
0.240
0.250
0.280
C
0.115
0.130
0.195
D
0.115
0.130
0.150
E
0.014
0.018
0.022
F
0.045
0.060
0.070
G
—
0.10 BSC
—
H
0.300
0.310
0.325
I
—
—
0.430
Symbol
Rev. 1.20
Dimensions in inch
Dimensions in mm
Min.
Nom.
Max.
19.69
A
18.67
19.05
B
6.10
6.35
7.11
C
2.92
3.30
4.95
D
2.92
3.30
3.81
E
0.36
0.46
0.56
F
1.14
1.52
1.78
G
—
2.54 BSC
—
H
7.62
7.87
8.26
I
—
—
10.92
9
October 07, 2013
HT9231/HT9232/HT9234
8-pin SOP (150mil) Outline Dimensions
Symbol
Dimensions in inch
Min.
Nom.
Max.
A
—
0.236 BSC
—
B
—
0.154 BSC
—
C
0.012
—
0.020
C′
—
0.193 BSC
—
D
—
—
0.069
E
—
0.050 BSC
—
F
0.004
—
0.010
G
0.016
—
0.050
H
0.004
—
0.010
α
0°
—
8°
Symbol
Rev. 1.20
Dimensions in mm
Min.
Nom.
Max.
—
A
—F
6.00 BSC
B
—
3.90 BSC
—
C
0.31
—
0.51
C′
—
4.90 BSC
—
D
—
—
1.75
E
—
1.27 BSC
—
F
0.10
—
0.25
G
0.40
—
1.27
H
0.10
—
0.25
α
0°
—
8°
10
October 07, 2013
HT9231/HT9232/HT9234
14-pin SOP (150mil) Outline Dimensions
Symbol
A
Dimensions in inch
Min.
Nom.
Max.
—
0.236 BSC
—
B
—
0.154 BSC
—
C
0.012
—
0.020
C′
—
0.341 BSC
—
D
—
—
0.069
E
—
0.050 BSC
—
F
0.004
—
0.010
G
0.016
—
0.050
H
0.004
—
0.010
α
0°
—
8°
Symbol
Rev. 1.20
Dimensions in mm
Min.
Nom.
Max.
A
—
6.00 BSC
—
B
—
3.90 BSC
—
C
0.31
—
0.51
C′
—
8.65 BSC
—
D
—
—
1.75
E
—
1.27 BSC
—
F
0.10
—
0.25
G
0.40
—
1.27
H
0.10
—
0.25
α
0°
—
8°
11
October 07, 2013
HT9231/HT9232/HT9234
Copyright© 2013 by HOLTEK SEMICONDUCTOR INC.
The information appearing in this Data Sheet is believed to be accurate at the time
of publication. However, Holtek assumes no responsibility arising from the use of
the specifications described. The applications mentioned herein are used solely
for the purpose of illustration and Holtek makes no warranty or representation that
such applications will be suitable without further modification, nor recommends
the use of its products for application that may present a risk to human life due to
malfunction or otherwise. Holtek's products are not authorized for use as critical
components in life support devices or systems. Holtek reserves the right to alter
its products without prior notification. For the most up-to-date information, please
visit our web site at http://www.holtek.com.tw.
Rev. 1.20
12
October 07, 2013