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MA7151F/R

Major Power Technology Co., Ltd.

Rev.1.0 Sep.18, 2017



PERFORMANCE CHARACTERISTICS

25

50

60

70

80

85

90

95

100

PD (mW)

550

440

396

352

308

286

264

242

220

105

110

115

120

125

130

135

140

150

PD (mW)

198

176

154

132

110

88

66

44

0



Functional Descriptions

Bias generator

The bias generator provides precise, temperature- and process-insensitive bias references for the

analog blocks. These references guarantee proper operation of the IC under all conditions

specified in this specification.

Oscillator

The built-in oscillator provides the clock signal for the digital control logics

Power-on Reset

Used to detect the power-up ramp and reset the digital circuits.

Chopper Amplifier

To achieve a higher magnetic sensitivity the chopper amplifier structure is adopted in this design.

Use of this structure dynamically removes both the offset and flicker noise at the same time.

PWM control

PWM(pulse-width modulation) is used for the speed control. 2 types of PWM input signals can be

used :