APPLICATION NOTE

AN42

 

 

VID

Iload (A)

Vout (V)

 

 

 

1010

0.5

2.505

 

 

 

 

1.0

2.504

 

 

 

 

2.0

2.501

 

 

 

 

3.0

2.496

 

 

 

 

4.0

2.493

 

 

 

 

5.0

2.493

 

 

 

 

6.0

2.492

 

 

 

 

7.0

2.492

 

 

 

 

8.0

2.491

 

 

 

 

9.0

2.490

 

 

 

 

10.0

2.489

 

 

 

 

11.0

2.488

 

 

 

 

12.0

2.486

 

 

 

 

13.0

2.485

 

 

 

 

13.9

2.484

 

 

 

Load Regulation 0.5 - 13.9A

0.84%

 

 

 

Note:

Load regulation is expected to be typically around 0.8%. The load regulation performance for this device under evaluation is excellent.

Output Voltage Load Transients Due to Load Current Step

This test is performed using Intel P6.0/P6S/P6T Voltage Transient Tester.

Low to High

0.5A-9.9A

- 76.0mV

Refer to

Current Step

 

 

Attachment

 

 

 

A for Scope

 

 

 

Picture

 

 

 

 

High to Low

9.9A-0.5A

+ 70mV

Refer to

Current Step

 

 

Attachment

 

 

 

B for Scope

 

 

 

Picture

 

 

 

 

Low to High

0.5A-12.4A

- 97.6mV

Refer to

Current Step

 

 

Attachment

 

 

 

C for Scope

 

 

 

Picture

 

 

 

 

High to Low

12.4A-0.5A

+ 80.0mV

Refer to

Current Step

 

 

Attachment

 

 

 

D for Scope

 

 

 

Picture

 

 

 

 

Low to High

0.5A-13.9A

- 99.2mV

Refer to

Current Step

 

 

Attachment

 

 

 

E for Scope

 

 

 

Picture

 

 

 

 

High to Low

13.9A-0.5A

+ 105.2mV

Refer to

Current Step

 

 

Attachment

 

 

 

F for Scope

 

 

 

Picture

 

 

 

 

Note:

Excellent transient voltage response. Transient voltage is rec- ommended to be less than 4% of the output voltage. The per- formance of the device under evaluation is significantly better than a typical VRM.

Input Ripple and Power on Input Rush Current

Iload = 9.9A

Input Ripple

Refer to Attachment

 

Voltage = 15mV

G for Scope Picture

 

 

 

Power on Input Rush Current is not measured on the mother- board because we did not want to cut the 5V trace and insert current probe in series with the supply. However, with the input filter design, the Input Rush Current will be well within specification.

21

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Fairchild RC5040, RC5042 specifications + 80.0mV

RC5040, RC5042 specifications

The Fairchild RC5042 and RC5040 are versatile integrated circuits that stand out in the realm of high-performance analog applications. Designed to meet the demands of modern electronic systems, these devices integrate various features and technologies that contribute to their effectiveness in a multitude of applications.

The RC5040 is a precision voltage reference that offers a stable, low-noise output, making it ideal for applications such as instrumentation, data acquisition systems, and RF circuits. It boasts an operating temperature range of -40°C to +85°C, ensuring reliability in diverse environments. One of its most significant characteristics is its low-temperature drift, which minimizes variations in output voltage over temperature fluctuations, thereby enhancing the accuracy of devices that utilize it.

On the other hand, the RC5042 is designed as a high-speed comparator with an integrated voltage reference. This dual functionality allows for a more compact design in applications where space is a premium. The RC5042 features an ultra-fast response time and high input impedance, which contribute to its capability to handle rapidly changing signals without distortion. This makes it particularly useful in applications like analog signal processing and threshold detection.

Both devices utilize Fairchild's advanced BiCMOS technology, which combines the benefits of bipolar and CMOS processes. This technology allows the devices to operate with low power consumption while maintaining high speed and operational efficiency. The RC5042 and RC5040 also incorporate noise-reduction techniques, which help in minimizing unwanted disturbances that could impact circuit performance.

Another noteworthy characteristic of both the RC5040 and RC5042 is their ease of integration. They come in compact package sizes, making them easier to incorporate into various designs without compromising on performance. Furthermore, the availability of multiple output options allows engineers the flexibility to choose configurations that best suit their specific applications.

In conclusion, the Fairchild RC5042 and RC5040 are robust devices that offer essential functionality for various high-performance analog applications. With their precision, fast response time, and exceptional reliability, these integrated circuits are a valuable asset in the design of modern electronic systems, catering to the growing demands of the technology landscape.