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