Philips AN1651 manual Strain Gauge Amplifier

Page 10

Philips Semiconductors

Application note

 

 

 

Using the NE/SA5234 amplifier

AN1651

 

 

 

 

R

R

 

 

 

 

 

 

 

 

 

10k

VCC

 

 

 

 

 

 

 

 

 

VCC

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

NE/SA5234

RECEIVE UNIT

 

RS

4

 

T

 

 

±

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

A1

+

 

 

 

CC

 

 

A

 

 

+

 

 

 

 

 

N

 

 

 

A2

 

 

 

 

+

 

S

 

 

 

±

4700Ω

 

 

 

±

 

 

 

 

 

 

 

RSH = 250Ω

 

R1

11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1

 

 

 

 

 

 

 

 

 

 

 

RF

SL00643

 

 

 

 

 

SL00644

 

 

 

 

 

 

 

 

Figure 15. Non-Inverting Biasing

 

 

 

 

Figure 16. A 4-20mA Current Loop

 

 

 

V2

12k

 

1.2M

 

 

 

 

 

4.3k

 

4.3k

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+5.0V

 

V2 ± V1

VO

 

 

 

 

 

 

 

 

 

S.G.

S.G.

2

 

4

 

 

 

5.9mV

0.5V

 

+

 

 

 

 

+5.0V

 

 

 

 

 

VO

 

25.6mV

2.50V

 

 

 

±

 

1

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

46.6mV

4.63V

4.3k

 

4.3k

 

 

 

1k

 

 

S.G.: Matched Strain Gauge elements

 

 

 

 

11

 

 

 

 

12k

1.2MΩ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SL00645

Figure 17. Strain Gauge Amplifier

 

 

 

+VCC

 

 

 

1.2M

4.3k

4.3k

 

 

 

 

4

 

 

 

S.G.

S.G.

2

 

 

 

 

 

 

+

SIGNAL

 

12kΩ

 

 

±

1

 

 

 

 

3

 

4.3k

4.3k

 

COM

 

 

 

11

 

 

 

Two-wire, Twisted-pair

 

12kΩ

1.2MΩ

Shielded Line

 

 

SL00646

Figure 18. Remote Strain Gauge

 

4-6V DC

 

 

+

+3V

+

±

 

 

 

±

+

CMOS

 

 

 

 

4V

 

 

VR

 

 

±

 

SL00647

Figure 19. Solar Regulator

1991 Oct

10

Image 10
Contents AN1651 II. Detailed Description SummaryInput Stage Intermediate Amplifier and Output Stage Figure III. CharacteristicsInternal Frequency Compensation NE5234 Closed Loop Gain vs Frequency IV. Noise Referred to the Input Guide Lines for Minimizing NoiseVI. Multiple Stage Considerations Amplified Noise = 160μVRMSVII. LOW Harmonic Distortion THD vs Supply Voltage for 1VRMS OutputIX. LOOP-GAIN VIII. GAIN-BANDWIDTH VS Closed Loop FRE- Quency ResponseSlew Rate Response Single Supply Operation XI. ProceduresNon-Inverting Stage Biasing Strain Gauge Amplifier Instrumentation Applications ExamplesTo 20mA Current Loop Active filters Communications and AudioActive Filters Fiber Optic Receiver for Low Frequency Data Figure References NE578NE570/571/SA571 System Level Half Bridge Servo

AN1651 specifications

The Philips AN1651 is a highly regarded car audio speaker offering an impressive balance of sound quality and performance. Designed primarily for the car audio enthusiast, this model showcases what modern engineering can achieve in automotive sound systems.

One of the main features of the AN1651 is its dual cone structure that produces clear and rich sound across various frequencies. This design aims to enhance both low and mid-range sounds, ensuring that music is delivered with clarity and precision. Whether you're listening to rock, pop, or classical, the AN1651 is built to convey the nuances of music effectively.

The speaker boasts a peak power handling capability of up to 240 watts, which allows for immersive sound experiences without distortion, even at higher volumes. This capability means that the AN1651 can handle the punchy bass lines typical in many contemporary music genres, making it a popular choice among bass enthusiasts.

Philips also incorporates their innovative technologies, such as a reinforced polypropylene cone. This material enhances sound quality by providing better rigidity while remaining lightweight. The result is a responsive speaker with reduced resonance, contributing to more accurate audio playback. Furthermore, the butyl rubber surround is designed to withstand wear and tear, ensuring durability and longevity in automotive conditions.

The AN1651 also features a sensitivity rating of 91 dB, allowing it to produce powerful sound output even with moderate power input. This feature makes it an ideal choice for vehicles with smaller amplifiers or factory stereo units, as it ensures an enjoyable listening experience without requiring significant upgrades.

In terms of installation, the AN1651 is designed for versatility. Its size makes it compatible with a wide range of vehicles, and the mounting accessories included facilitate an easy and secure fit.

With a smart aesthetic that blends well with various car interiors, the Philips AN1651 speaker is more than just a functional audio component; it is a stylish addition to your vehicle.

In conclusion, the Philips AN1651 combines advanced technologies and thoughtful design to deliver a rich audio experience that car enthusiasts will appreciate. Whether for casual listening or serious audio enjoyment, this speaker meets diverse audio needs, proving to be a valuable investment for any car audio system.