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Manual Philips AN1651

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  • Philips AN1651 - page 1

      AN1651 Using the NE/SA5234 amplifier Author: Les Hadley 1991 Oct INTEGRA TED CIRCUITS ...

  • Philips AN1651 - page 2

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 2 1991 Oct Author: L. Hadley I. SUMMAR Y The NE/SA5234 is a unique low-voltage quad operational amplifier specifically designed to operate in a broadly diverse environment. It is an enhanced pin-for-pin replacement for the LM324 category of devices. Supply conditions can r ...

  • Philips AN1651 - page 3

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 3 47k 47k V IN V OUT V CC + – 5V CONVENTIONAL OP AMP PHILIPS NE5234 t t V CC V OUT V OUT V IN V IN V GND V GND V GND V CC 5V SL00569 Figure 2. Output Inversion Protection 6 5 4 3 2 1 0.5 -1 -0.1 +0.1 “N-MODE” CMRR V EE +1 < V CM < V CC “LARGE SIGNAL? ...

  • Philips AN1651 - page 4

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 4 D2 I B2 I B4 I B5 I B6 I B8 I B7 I B9 I B3 V B4 V CC I 2 I 1 V EE D3 CLASS AB CONTROL Q61 Q62 Q83 Q85 Q81 Q82 Q71 Q75 Q72 Q78 Q53,54 Q51,52 C1 C2 C3 C4 C5 R82 C6 Q84 OUTPUT INPUT + – INTERMEDIA TE STAGE CURRENT CONTROL CLASS AB OUTPUT R85 R76 R86 R75 SL00632 F ...

  • Philips AN1651 - page 5

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 5 4 1 1 + – 47k 5234 100 x10 HP 3585 SPECTRUM ANAL YZER 10 Ω 600 Ω +2.5V –2.5V SL00634 Figure 6. Noise T est Circuit IV . NOISE REFERRED T O THE INPUT The typical spectral voltage noise referred to each of the op amps in the NE/SA5234 is specified to be 25 ...

  • Philips AN1651 - page 6

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 6 signal-to-noise ratio at the output of this stage is determined by first multiplying the gain times the signal which gives 1V RMS with a resultant noise of 400mV RMS . The signal-to-noise ratio is calculated as S ń N 20log 10 (1.0 ń 4x10 * 4 ) + 68dB (EQ. 5.) ...

  • Philips AN1651 - page 7

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 7 (EQ. 8.) ƪ (0.163x10 * 3 ) 2 ) ǒ 4KT @ 100 @ 10, 000 Ǹ Ǔ 2 Ǹ ƫ @ 10 + 1.6mV (EQ. 9.) K + Boltzman Ȁ sConstant + T + 300 o K ; BW + 10kHz 1.38x10 * 23 Joule DegKelvin The amplified output signal = 1V RMS (EQ. 10.) S ń N + 20 log 10 ǒ 1 1.6x10 * 3 Ǔ + 56 ...

  • Philips AN1651 - page 8

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 8 VIII. GAIN-BANDWIDTH VS CLOSED LOOP FRE - QUENCY RESPONSE Figure 5 shows the small signal frequency response of the NE5234 versus closed-loop gain in dB. The test circuit is shown in Figure 6. The plot is taken from measured data and thus shows how each value of ...

  • Philips AN1651 - page 9

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 9 Slew Rate + V P (2 p f) cos (2 p f t) Note that maximum slew rate occurs where the input sine wave signal crosses the values of 0, π , and 2 π on the radian axis. T o get a feel for what this means in regards to the typical low voltage circuit, let us consider ...

  • Philips AN1651 - page 10

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 10 + – 10k 4 1 1 R S V CC 2 R R R1 R F C1 CC V CC SL00643 Figure 15. Non-Inverting Biasing NE/SA5234 – + A1 R SH = 250 Ω RECEIVE UNIT T R A N S 4700 Ω + – A2 SL00644 Figure 16. A 4-20mA Current Loop + – 4 1 1 V O 1 3 2 1.2M V2 4.3k 12k 12k +5.0V 1.2M ? ...

  • Philips AN1651 - page 11

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 1 1 APPLICA TIONS EXAMPLES Instrumentation Strain Gauge Bridge Amplifier The circuit below shows a simple strain gauge circuit with a gain of 100 (40dB) and operated from a single supply . The chart illustrates the transfer function of the circuit for a single ord ...

  • Philips AN1651 - page 12

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 12 IC-1 NE5234 20k Ω 10k Ω V CC VR1 VR2 10k Ω 150 150 150 150 IC-2 NE5234 BDX45 BDX42 + – + – + – + – A3 A2 A4 A5 A6 A1 + – + – PM MOTOR 100 1 V REF R S C L C S 100k Ω VR1-3 = 1.4V +4.5VDC 10 Ω 10 Ω 0.1 µ F 0.1 µ F 4 VR2 SL00648 Figure 20 ...

  • Philips AN1651 - page 13

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 13 Figure 23 shows the VOX audio circuit example. A description of its operation for voice activated transmission follows. Audio generated by the electret microphone is fed into the non-inverting input of preamp A1 and the signal amplified by 12dB. The biasing is ...

  • Philips AN1651 - page 14

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 14 10k Ω 10k Ω 10k Ω 12k Ω 40.2k Ω 2.2M Ω 10k Ω 2.2k Ω 220 Ω 0.15 µ F 1 µ F 4.7 µ F 1nF 0.47 µ F 25k Ω 25k Ω 18k Ω + – + – + – + – + – A1 A2 A3 A4 100k Ω 4 1 1 19 8 16 12 1 1 10 9 7 4.2V OFF ON 0V X1 D2 D1 C t R A +4.5V MIC ...

  • Philips AN1651 - page 15

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 15 configuration and its output is squared to swing approximately 5V , the standard TTL level. Again common-mode biasing is passed along from each of the stages up to the last in order minimize parts and simplify circuit layout. The final stage is a simple buffer ...

  • Philips AN1651 - page 16

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 16 42 µ V 420 µ V +16dB 0dB -20dB -40dB -60dB -80dB +16.0 0.0 -20 -40 -60 -80 +12.0 A B C D TRANSMISSION MEDIUM DB dBM +10.68 -5.32 -25.32 -45.32 -65.32 -85.32 +6.68 EXP ANDOR OUT COMPRESSION IN V RMS 2.65V 420mV 42mV 4.2mV 1.67V (COMPRESSOR OUT) (EXP ANDOR IN) ...

  • Philips AN1651 - page 17

    Philips Semiconductors Application note AN1651 Using the NE/SA5234 amplifier 1991 Oct 17 +3V + – M + – + – + – -3V 4 1 1 1N9683 6 5 7 9 10 8 2 3 1 13 12 14 NE5234 1/100 1N9683 SL00655 Figure 27. Half Bridge Servo ...

Manufacturer Philips Category Stereo Amplifier

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All of them are important, but the most important information from the point of view of use of the device are in the user manual Philips AN1651.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Philips AN1651, service manual, brief instructions and user manuals Philips AN1651. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Philips AN1651.

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A complete manual for the device Philips AN1651, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Philips AN1651 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Philips AN1651.

A complete Philips manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Philips AN1651 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Philips AN1651, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Philips AN1651, that we can find in the current document
3. Tips how to use the basic functions of the device Philips AN1651 - which should help us in our first steps of using Philips AN1651
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Philips AN1651
5. FAQ - Frequently Asked Questions
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