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NTE1577 Integrated Circuit Dual, Low Noise Preamp w/Auto Reverse
Description: The NTE1577 is a dual preamplifier with tape autoreverse facilityin a 16-Lead DIP type package designed for the amplification of low level signals in applications requiring very low noise performance, as stereo cassette players. Each channel consists of two independent amplifiers. The first has a fixed gain of 30dB while the second one is an operational amplifier optimized for high quality audio application. Features: D Very Low Noise D High Gain D Large Output Voltage Swing D Low Distortion D Tape Autoreverse Facility D Single Supply Operation D Short Circuit Protection D Wide Supply Range Absolute Maximum Ratings: Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36V Total Power Dissipation (TA = +60C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mW Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +150C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +150C Thermal Resistance, Junction-to-Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150C/W Electrical Characteristics: (TA = +25C, VS = 14.4V, GV = 60dB unless otherwise specified)
Parameter Supply Current Output Current (Pin1 to Pin15) Source Sink Closed Loop Gain GV f = 20Hz to 20kHz Symbol IS IO Test Conditions VS = 8V to 30V VS = 8V to 30V Min - - - - Typ 10 10 1 60 Max - - - - Unit mA mA mA dB
Electrical Characteristics (Cont'd): (TA = +25C, VS = 14.4V, GV = 60dB unless otherwise specified)
Parameter Input Resistance Output Resistance (pins 1-15) Total Harmonic Distortion Output Voltage Swing (Pin1 to Pin15) Total Input Noise Symbol Ri Ro THD VO en Test Conditions f = 1kHz f = 1kHz VO = 300mV f = 1kHz f = 10kHz Peak-to-Peak VS = 14.4V VS = 30V Note 1 Rg = 50 Rg = 600 Rq = 5k Signal-to-Noise Ratio Channel Separation Crosstalk (Differential Input) Supply Voltage Rejection Supply Voltage Rejection of Reference Voltage (Pin4) Reference Voltage (Pin 4) Reference Voltage Output Resistance (Pin4) Voltage Temperature Coefficient S/N CS CT SVR SVR Vref Rref Vref T Vin = 0.3mV, Rg = 600, Note 1 Vin = 1mV, Rg = 0, Note 1 f = 1kHz f = 1kHz, Note 3 f = 1kHz, Rg = 600, Note 2 f = 1kHz, Rg = 600, Note 2 Min 50 - - - - - - - - - - - - - - - - - Typ 80 50 0.05 0.05 12 28 0.25 0.4 1.3 57 73 60 80 120 100 55 100 10 Max - - - - - - - 0.6 - - - - - - - - - - Unit k % % V V V V V dB dB dB dB dB dB mV V/C
Note 1. The weighting filter used for the noise measurement has a curve A frequency response. Note 2. Referred to the input Note 3. Between a disabled input and an input ON.
Electrical Characteristics: (VS = 30V unless otherwise specified)
Parameter Amplifier No. 1 Gain (Pin6 to Pin5) Distortion Total Input Noise Output Impedance (Pin5) Output Current (Pin5) DC Output Voltage (Pin5) GV d en ZO IO V5 VS = 10V VO = 300mV f = 1kHz f = 10kHz Rg = 600, Note 1 f = 1kHz 29 - - - - - 1.3 30 0.05 0.05 0.4 100 1 2 30.5 - - - - - 2.7 dB % % V mA V Symbol Test Conditions Min Typ Max Unit
Note 1. The weighting filter used for the noise measurement has a curve A frequency response.
Electrical Characteristics (Cont'd): (VS = 30V unless otherwise specified)
Parameter Amplifier No. 2 Open Loop Voltage Gain (Pin2 to Pin1) Input Bias Current Input Offset Voltage Input Offset Current Small Signal Bandwidth Total Input Noise Input Impedance GV IB VOS Ios BW en RI GV = 30dB Rg = 600, Note 1 f = 1kHz (Open Loop) - - - - - - 150 100 0.2 2 0.05 150 2 500 - - - - - - - dB A mV A kHz V k Symbol Test Conditions Min Typ Max Unit
Note 1. The weighting filter used for the noise measurement has a curve A frequency response. Autoreverse: V12 < 2V V12 > 4.5V
OFF ON
Pin Connection Diagram
Pin
6 - 10 7-9
ON OFF
Output A 1 Non-Inverting Input A 2 Inverting Input A 3 Voltage Reference 4 Output 5 Input 6 Input 7 GND 8
16 VCC 15 Output B 14 Non-Inverting Input B 13 Inverting Input B 12 Threshold 11 Output 10 Input 9 Input
16
9 .260 (6.6) Max
1
8
.785 (19.9) Max .200 (5.08) Max .245 (6.22) Min .100 (2.54) .700 (17.7)
.300 (7.62)

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