HA17301P Quad Operational Amplifier Description The HA17301P is an internal-compensation quad operational amplifier that operates on a single-voltage power supply. Typical applications for the HA17301P include waveform generators, voltage regulators, logic circuits, and voltage-controlled oscillators. Features • • • • Wide operating temperature range Single-voltage power supply operation Internal phase compensation Low input bias current Pin Arrangement Vin(+)2 1 Vin(+)1 2 Vin(−)1 14 VCC 3 Vout1 4 Vout2 5 Vin(−)2 6 7 + 1 − + 4 12 Vin(+)4 11 Vin(−)4 10 Vout4 2 − GND 13 Vin(+)3 − 3 + + (Top view) 9 Vout3 − 8 Vin(−)3 HA17301P Circuit Structure (1/4) VCC Vout Vin(−) Vin(+) GND 2 HA17301P Absolute Maximum Ratings (Ta = 25°C) Item Symbol Ratings Unit Power-supply voltage VCC 28 V Noninverting input current Ir 5 mA Sink current Io sink 50 mA Source current Io source 50 mA Allowable power dissipation* PT 625 mW Operating temperature Topr –20 to +75 °C Storage temperature Tstg –55 to +125 °C Note: This is the allowable value up to Ta = 50°C for the HA17301P. Derate by 8.3 mW/°C above that temperature. Electrical Characteristics (VCC = +15 V, RL = 5.0 kΩ, Ta = 25°C) Item Symbol Min Typ Max Unit Test Conditions Voltage gain AVD 1,000 1,400 — V/V Supply current I CO — 7.7 10 mA Non inverting input open I CG — 8.3 14 mA Non inverting input grounded Input bias current I IB — 80 300 nA RL = ∞ Current mirror gain AI 0.80 0.94 1.16 A/A Ir = 200 µA Output source current Io source 3 13 — mA VOH = 0.4 V — 10 — mA VOH = 9.0 V VOL = 0.4 V Output sink current Io sink 0.5 0.75 — mA Output voltage VOH 13.5 13.9 — V VOL(inv) — 0.04 0.1 V Inverting input driven VOL(non) — 0.55 — V Non inverting input driven Input resistance Rin 0.1 1.0 — MΩ Inverting input only Slew rate SR — 0.2 — V/µs CL = 100 pF, RL = 5.0 kΩ Bandwidth BW — 2.6 — MHz AVD = 1 Phase margin φm — 87 — deg Power-supply rejection ratio PSRR — 63 — dB f = 100 Hz Channel separation CS — 63 — dB f = 1.0 kHz 3 HA17301P HA17301P Application Examples The HA17301P is a quad operational amplifier, and consists of four operational amplifier circuits and one bias current circuit. The HA17301P features a wide operating temperature range, single-voltage power supply operation, internal phase compensation, a wide zero-cross bandwidth, a low input bias current, and a high open-loop gain. Thus the HA17301P can be used in a wide range of applications. This section describes several applications using the HA17301P. HA17301 Circuit Operation VCC Q5 Q2 C1 3 pF Q4 Inverting input 3 Non inverting input 2 4 Output Q1 Q3 D1 GND Q10 Op amp 1 Bias circuit Figure 1 HA17301 Internal Equivalent Circuit Figure 1 shows the internal equivalent circuit for the HA17301P bias circuit and one operational amplifier circuit (Op amp 1). Op amp 1 is basically an emitter ground type operational amplifier in which the input transistor Q1, the buffer transistor Q 4, the current source transistor Q5, the output emitter-follower transistor Q2, and the current source transistor Q10 form an inverting amplifier. The voltage gain of this circuit is all given by the transistor Q1, and the adoption of the current-supply load Q5 allows this circuit to provide a large open-loop gain even at low power-supply voltages. Next, the emitter-follower transistor Q 2 lowers the output impedance of this circuit. The use of the power-supply transistor Q10 as the load for Q2 gives this circuit an extremely large dynamic range, and essentially an amplitude from ground to (VCC – 1) can be acquired. Also, the buffer transistor Q4 is used to reduce the input current without increasing the DC input voltage level. Since the capacitor C1 is used to preserve stability when this inverting amplifier is used as a closed circuit, no external compensation is required. Now consider the non inverting circuit. Assuming that the current amplification ratio provided by Q 3 is adequately large for the current flowing into the non inverting input, then all that current will flow through diode D 1 and the voltage drop induced in the diode D 1 by this input current will be applied to the Q 3 baseemitter junction. Therefore, if D 1 and Q 3 are matched, a current equal to the input current will flow in the Q3 emitter. Assuming that the current amplification ratio provided by Q3 is adequately large, a current equal to the input current will flow in the Q 3 collector. This is called a “current mirror”, and when an external feedback resistor is used, a current equal to the non inverting input current will flow in this resistor and thus determine the output voltage. 4 HA17301P Inverting Amplifier There are three bias techniques for biasing the inverting amplifier, the single power supply bias technique, the NVBE bias technique, and the load voltage bias technique. 1. Single Power Supply Bias Technique Figure 2 shows a common AC amplifier that is biased by the same power supply as the supply that operates the amplifier. R2 Cin 0.1 µF 500 k R1 − VD 50 kΩ − Vout + Vin + VD + I R3 = 2R2 1 MΩ + V Figure 2 Single Power Supply Bias Technique R Vout =− 2 Vin R1 (1) 2. NVBE Bias Technique R2 Cin R1 VRE 0.1 µF 100 kΩ I Vin R3 − I 1 MΩ − Vout 82 kΩ + Figure 3 NVBE Bias Technique This is the most useful application of an inverting AC amplifier. In this circuit, the input bias voltage VBE for the inverting input is determined by the current that flows to ground through the resistor R3. R Vout =− 2 Vin R1 (2) 5 HA17301P Triangular Wave oscillator Triangular waveforms are usually acquired by integrating an alternating positive and negative DC voltage. Figure 4 shows the relation between the input and output in this circuit. C1 V 0.001 µF R1 + 1 MΩ VRE − Vout1 + R3 100 kΩ − I − Vout2 R2 500 kΩ + + I + R4 R5 1 MΩ 120 kΩ V Figure 4 Triangular Wave Oscillator VOH V02 I I+ TOL VOL TOH t−n Figure 5 Triangular Wave Generator Operation TOL = C1 R1 R3 VOH R5 (V+ − VBE) TOH = R5 C1 R3 V+ VOH V+ − VBE − R2 R1 (3) (4) Here, if R1 = 2·R2, VOH = V+, and V+ > VBE , then: TOH + TOL = 6 2C1 R1 R3 R5 (5) HA17301P Vout1 0 Vout2 0 Vertical: Horizontal: 5 V/cm 0.5 ms/cm Figure 6 Triangular Wave Generator Operating Waveform Table 1 Test Item Tested Value Calculated Value Unit Test Condition Triangular wave TOH 1.06 0.83 ms VCC = 15 V, V+ = 15 V, C1 = 0.001 µF, generator TOL 0.82 0.83 ms R1 = 1 MΩ, R2 = 500 kΩ, R3 = 100 kΩ, VOIH 13.5 14 V R4 = 1 MΩ, R5 = 120 kΩ VOIL 1.5 1.5 V Figure 4 Comparators This section describes three comparator circuits implemented using the HA17301P, a positive input voltage comparator, a negative input voltage comparator, and a power voltage comparator. 1. Positive Input Voltage Comparator I− − +Vin 1 MΩ Vout I+ +VREF + 1 MΩ Figure 7 Positive Input Voltage Comparator Vout in the circuit shown in figure 7 will be V OH when I– < I+ and VOL when I– > I+. To assure that this circuit operates correctly, the reference voltage must be greater than VBE . 7 HA17301P 28 Output voltage Vout (V) VCC = 28 V 24 20 20 16 15 12 10 8 VREF = 5 V 5 4 3 0 1 2 3 4 5 6 7 8 9 Input voltage Vin (V) Figure 8 Positive Input Voltage Comparator Operating Characteristics (1) 20 V+ = 15 V 16 4 0 2 4 6 8 10 15 10 5.0 8 1.0 2.0 12 VREF = 0.5 V Output voltage Vout (V) 24 12 14 16 18 Input voltage Vin (V) Figure 9 Positive Input Voltage Comparator Operating Characteristics (2) 2. Negative Input Voltage Comparator V+ R3 200 kΩ Vin R1 100 kΩ VREF R4 200 kΩ I− − Vout R2 + 100 kΩ I+ Figure 10 Negative Input Voltage Comparator 8 HA17301P VIN > R1 VBE 1 1 + R1 R4 V+ R4 − (6) If resistor R4 is chosen so that formula 6 holds, and VREF > R2 VBE 1 1 + R2 R3 − V+ R3 (7) if resistor R4 is chosen so that formula 7 holds, then even if VIN and VREF are negative, Vout will be VOH when I– < I+ and VOL when I– > I+, as was the case for the positive input voltage comparator. 28 Output volatge Vout (V) 24 V+ = +28 V 20 +20 16 +15 12 8 +10 VREF = −1 V 4 0 −6 −5 −4 −3 +5 +3 −2 −1 0 Input volatge Vin (V) Figure 11 Negative Input Voltage Comparator Operating Characteristics (1) 20 V− = +15 V 16 −2 8 −1 12 VREF = −15 V Output voltage Vout (V) 24 4 0 −6 −5 −4 −3 −2 −1 0 Input voltage Vin (V) Figure 12 Negative Input Voltage Comparator Operating Characteristics (2) 9 HA17301P 3. Power Comparator As shown in figure 13, adding an external transistor allows the circuit to drive loads that require a larger current than the output current that the HA17301P can supply. V+ 12ESB 40 mA LAMP 15 Ω − VREF 1 MΩ 2SC458 K Vin 5.1 kΩ + 1 MΩ Figure 13 Power Comparator 20 16 15 10 5 8 2 12 VREF = −1 V Output voltage Vout (V) 24 4 0 2 4 6 8 10 12 14 16 18 Input voltage Vin (V) Figure 14 Power Comparator Operating Characteristics 10 HA17301P Characteristic Curves Input Bias Current vs. Ambient Temperature Supply current vs. Power-Supply Voltage (1) 140 14 Ta = 25°C Vin(+) = Open 120 12 Supply current ICO (mA) Input bias current IIB (nA) VCC = 15 V 100 80 60 40 20 8 6 4 2 0 −40 −20 0 20 40 60 80 0 100 4 8 12 16 20 24 Ambient temperature Ta (°C) Power-supply voltage VCC (V) Supply current vs. Power-Supply Voltage (2) Current Mirror Gain vs Ambient Temperature 28 1.00 14 10 8 6 4 2 0 4 8 12 16 20 24 Power-supply voltage VCC (V) 28 VCC = 15 V Current mirror gain AI (A/A) Ta = 25°C Vin(+) = Grounded 12 Supply current ICG (mA) 10 0.95 0.90 0 −40 −20 0 20 40 60 80 100 Ambient temperature Ta (°C) 11 HA17301P Output Source Current vs. Power-Supply Voltage Output Sink Current vs. Power-Supply Voltage 1.4 Ta = 25°C VOH = 0.4 Vdc 24 Output sink current Io sink (mA) Output source current Io source (mA) 28 20 16 12 8 4 0 4 8 12 16 20 24 Ta = 25°C VOL = 0.4 Vdc 1.2 1.0 0.8 0.6 0.4 0.2 0 28 4 20 24 28 74 80 VCC = 15 V Ta = 25°C Vin = 1 mV VCC = 15 V f = 1 kHz 72 Voltage gain AVD (dB) 70 Voltage gain AVD (dB) 16 Voltage Gain vs. Ambient Temperature Voltage Gain vs. Frequency 60 50 40 30 70 68 66 64 62 20 1k 10 k 100 k Frequency f (Hz) 12 12 Power-supply voltage VCC (V) Power-supply voltage VCC (V) 0 0.1 k 8 1M 10 M 60 −40 −20 0 20 40 60 80 Ambient temperature Ta (°C) 100 HA17301P Package Dimensions Unit: mm 19.20 20.32 Max 8 6.30 7.40 Max 14 1.30 7 2.54 ± 0.25 0.48 ± 0.10 0.51 Min 2.39 Max 2.54 Min 5.06 Max 1 7.62 + 0.10 0.25 – 0.05 0° – 15° Hitachi Code JEDEC EIAJ Mass (reference value) DP-14 Conforms Conforms 0.97 g 13 HA17301P Cautions 1. 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Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor products. Hitachi, Ltd. Semiconductor & Integrated Circuits. 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