3.3
Voltage Regulators
Separate internal voltage regulators supply the analog and digital circuitry. External filter capacitors are required, as shown in
Figure 1 . The voltage regulator module includes voltage monitoring circuitry which indicates a device reset until the external sup-
ply and all internal regulated voltages are within predetermined limits. A reference generator provides a stable voltage which is
used by the ΣΔ converters.
V CC
BANDGAP
REFERENCE
VOLTAGE
REGULATOR
BIAS
GENERATOR
V REGA = 2.50 V
PRIMARY
OSCILLATOR
V REGA
TRIM
REFERENCE
GENERATOR
V REF = 1.250 V
TRACKING
TRIM
ΣΔ
CONVERTER
DIGITAL
LOGIC
DSP
OTP
ARRAY
V CC
V REG
REGULATOR
Tracks V REGA
Figure 8. Power Supply Block Diagram
V CCUV
V REGOV
V REGUV
V REG = 2.50 V
V REG
MONITOR
BANDGAP
V BGMON
V REGA
V REGAUV
GROUND LOSS
MONITOR
SET DEVRES Flag
V REGAOV
V REF
V REFOV
V REG
V PORREF
POR
V REFUV
Note: No external access to reference voltage
Limits verified by characterization only
Figure 9. Voltage Monitoring
MMA65xx
Sensor
22
Freescale Semiconductor, Inc.
相关PDF资料
MMA6556KW IC ACCELEROMETER X AXIS 16QFN
MMA6826AKW IC ACCELEROMETER XY AXIS 16QFN
MMA6854KW IC ACCELEROMETER X AXIS 16QFN
MMA7331LR2 ACCELEROMETER 4G XYZ ENH 14-LGA
MMA8451QT IC ACCELEROMETER 3AXIS 16QFN
MMA8452QR1 IC ACCELER 2G/4G/8G 3AXIS 16QFN
MMA8453QR1 IC ACCELER 2G/4G/8G 3AXIS 16QFN
MMBF0201NLT1 MOSFET N-CH 20V 300MA SOT-23
相关代理商/技术参数
MMA6527KWR2 功能描述:加速计 - 板上安装 XY-AXIS 120/ 120G RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA6555KW 功能描述:加速计 - 板上安装 X-AXIS 100G RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA6555KWR2 功能描述:加速计 - 板上安装 X-AXIS 100G RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA6556KW 功能描述:加速计 - 板上安装 X-AXIS 120G RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA6556KWR2 功能描述:加速计 - 板上安装 X-AXIS 120G RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C
MMA65XX 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Dual-Axis SPI Inertial Sensor
MMA6700AEGR2 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High Accuracy Low g Inertial Sensor MEMS Sensing, State Machine ASIC
MMA6700EG 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High Accuracy Low g Inertial Sensor MEMS Sensing, State Machine ASIC