LM4040 datasheet(10/15 Pages) MAXIM

Part #	LM4040

Description	Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages

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Manufacturer	MAXIM [Maxim Integrated Products]

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Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

10

______________________________________________________________________________________

LM4040-5.0V

STARTUP CHARACTERISTICS

LM4040-13

040

50

20 30

10

60

70 80 90

RESPONSE TIME (

µs)

5V

0V

4V

2V

RS = 16k

Ω

SEE FIGURE 2

0.1k

10k

1k

100k

1M

LM4040-2.5V

OUTPUT IMPEDANCE vs. FREQUENCY

FREQUENCY (Hz)

1000

0.1

1

10

100

IR = 150

µA

IR = 1mA

C1 = 1

µF

C1 = 0

Typical Operating Characteristics (continued)

(IR = 100µA, SC70 package, TA = +25°C, unless otherwise noted.)

LM4040-2.5V

STARTUP CHARACTERISTICS

LM4040-12

016

20

812

424

28 32 36

RESPONSE TIME (

µs)

5V

0V

2V

1V

RS = 30k

Ω

SEE FIGURE 2

1

100

10

1k

10k

LM4040-2.5V

NOISE vs. FREQUENCY

FREQUENCY (Hz)

10,000

100

1000

1100

10

1k

10k

LM4040-5.0V

NOISE vs. FREQUENCY

FREQUENCY (Hz)

10,000

100

1000

0.1k

10k

1k

100k

1M

LM4040-5.0V

OUTPUT IMPEDANCE vs. FREQUENCY

FREQUENCY (Hz)

100

0.1

1

10

IR = 150

µA

IR = 1mA

C1 = 0

C1 = 1

µF

RS

VIN

1Hz RATE

50%

DUTY CYCLE

VR

Figure 2. Startup Characteristics Test Circuit

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