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NTE727 Integrated Circuit Four Independent AC Amplifiers
Description: The NTE727 is a silicon monolithic integrated circuit in a 16-Lead DIP type package consisting of four independent identical AC amplifiers which can operate from a single-ended power supply. The amplifiers include internal DC bias and feedback to provide temperature-stabilized operation. They may be used in a wide variety of AC applications in which operational amplifiers have previously been used. Each high gain amplifier has a high impedance non-inverting input, and a lower impedance inverting input for the application of feedback. Two power-supply terminals and two ground terminals are provided to reduce internal and external coupling between amplifiers. Features: D Four AC Amplifiers on a Common Substrate D Independently Accessible Inputs and Outputs D Operates from a Single-Ended Supply D Noise Figure (Each Amp): 2dB Typ @ 1kHz D High Voltage Gain (Each Amp): 53dB Min D High Input Resistance (Each Amp): 90k Typ D Undistorted Output Voltage (Each Amp): 2Vrms Min D Output Impedance (Each Amp): 1k Typ D Open-Loop Bandwidth (Each Amp): 300kHz Typ Applications: D Multi-Channel or Cascade Operation D Low-Level Preamplifiers D Equalizers D Linear Signal Mixers D Tone Generators D Multivibrators D AC Intergrators
Absolute Maximum Ratings: (TA = +25C unless otherwise specified) Power Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +16V AC Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5Vrms Power Dissipation (TA = +55C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750mW Derate Above 55C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.7mW/C Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +85C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150C
Electrical Characteristics: (TA = +25C unless otherwise specified)
Parameter Static (VCC = 12V) Current Drain Per Amplifier Pair DC Voltage at Output Terminals DC Voltage at Feedback Terminals DC Voltage at Input Terminals I12 or I15 V1, V6, V11, V16 V3, V7, V10, V14 V4, V8, V9, V13 AOL VO(rms) BW THD RIN CIN ROUT COUT CFB EN EN(WT) NF RS = 5k f = 10Hz f = 100Hz f = 1kHz f = 10kHz f = 100kHz Inter-Amplifier Audio Separation "Crosstalk" Inter-Amplifier Capacitance (Any amplifier output to any other amplifier input) CT C VCC = 12V, f = 1kHz, 0dB = 0.78V VCC = 12V, f = 1MHz VCC = 12V, EIN = 2mV, f = 10kHz VCC = 12V, f = 1kHz, THD = 5% VCC = 12V, EIN = 2mV VCC = 12V, f = 1kHz, EOUT = 2Vrms Open Loop, f = 1kHz, Note 1 f = 1MHz Note 1 f = 1MHz VCC = 12V, f = 1MHz VCC = 12V, RS = 10k, A = 40dB, Equivalent Noise BW = 50kHz 9.5 6.1 1.7 2.2 13.5 6.9 2.0 2.5 17.5 8.1 2.3 2.8 mA V V V Symbol Test Conditions Min Typ Max Unit
Dynamic (Characteristics given are for each amplifier with no AC feedback) Open-Loop Gain Output Voltage Swing Open-Loop -3dB Bandwidth Total Harmonic Distortion Input Resistance Input Capacitance Output Resistance Output Capacitance Feedback Capacitance (Output to Non-Inverting Input Broad-Band Output Noise Voltage Output Noise Voltage "Weighted" Noise Figure 53 2.0 250 - - - - - - - - - - - - - - - 58 2.4 300 0.65 90 9 1 18 <0.1 0.3 0.5 10.0 5.8 2.0 1.1 0.6 <-45 <0.02 - - 0 - - - - - - 1.0 2.2 - - - - - - - dB V kHz % k pF k pF pF mV mV dB dB dB dB dB dB pF
Note 1. Pin3, Pin7, Pin10, and Pin14 are bypassed to GND.
Pin Connection Diagram
Output Amp 1 1 GND 1 2 -Input Amp 1 3 +Input Amp 1 4 GND 2 5 Output Amp 2 6 -Input Amp 2 7 +Input Amp 2 8
16 Output Amp 4 15 (+) VCC 1 14 -Input Amp 4 13 _Input Amp 4 12 (+) VCC 2 11 Output Amp 3 10 -Input Amp 3 9 +Input Amp 3
16
9
.260 (6.6) Max
1
8
.785 (19.9) Max
.300 (7.62)
.200 (5.08) Max .245 (6.22) Min
.100 (2.54) .700 (17.7)

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