MMA6525KW datasheet(9/56 Pages) FREESCALE

9 / 56 page

Sensor

Freescale Semiconductor, Inc.

MMA65xx

2.6

Dynamic Electrical Characteristics - Signal Chain

VL ≤ (VCC - VSS) ≤ VH, TL ≤ TA ≤ TH, |ΔTA| < 25 K/min unless otherwise specified.

Characteristic

Symbol

Min

Typ

Max

Units

102

103

104

DSP Sample Rate (LPF 0,1,2,3,4,5)

DSP Sample Rate (LPF 8,9,10,11,12,13)

Interpolation Sample Rate

tINTERP

—

64/fOSC

128/fOSC

tS/2

—

(7)

105

106

Data Path Latency (excluding g-cell and Low Pass Filter)

TS = 64/fOSC

TS = 128/fOSC

tDataPath_8

tDataPath_16

33.0

51.9

34.8

54.6

36.5

57.4

μs

(7,16)

107

108

109

110

111

112

Low-Pass Filter (ts = 8μs)

Cutoff frequency 0: 100 Hz, 4-pole

Cutoff frequency 1: 300 Hz, 4-pole

Cutoff frequency 2: 400 Hz, 4-pole

Cutoff frequency 3: 800 Hz, 4-pole

Cutoff frequency 4: 1000 Hz, 4-pole

Cutoff frequency 5: 400 Hz, 3-pole

fC0(LPF)

fC1(LPF)

fC2(LPF)

fC3(LPF)

fC4(LPF)

fC5(LPF)

285

380

760

950

380

100

300

400

800

1000

400

105

315

420

840

1050

420

(3,7,17)

113

114

115

116

117

118

Low-Pass Filter (ts = 16μs)

Cutoff frequency 8: 50 Hz, 4-pole

Cutoff frequency 9: 150 Hz, 4-pole

Cutoff frequency 10: 200 Hz, 4-pole

Cutoff frequency 11: 400 Hz, 4-pole

Cutoff frequency 12: 500 Hz, 4-pole

Cutoff frequency 13: 200 Hz, 3-pole

fC8(LPF)

fC9(LPF)

fC10(LPF)

fC11(LPF)

fC12(LPF)

fC13(LPF)

47.5

142.5

190

380

475

190

150

200

400

500

200

52.5

157.5

210

420

525

210

(3,7,17)

119

120

121

122

123

124

125

Offset Cancellation (Normal Mode, 12-Bit Output)

Offset Averaging Period

Offset Slew Rate

Offset Update Rate

Offset Correction Value per Update Positive

Offset Correction Value per Update Negative

Offset Correction Threshold Positive

Offset Correction Threshold Negative

OFFAVEPER

OFFSLEW

OFFRATE

OFFCORRP

OFFCORRN

OFFTHP

OFFTHN

—

6.29146

0.2384

1049

0.25

-0.25

0.125

—

LSB/s

LSB

(3,7)

126

127

128

129

130

131

Self Test Activation Time (CS rising edge to 90% of ST Final Value)

Cutoff frequency 0: 100 Hz, 4-pole

Cutoff frequency 1: 300 Hz, 4-pole

Cutoff frequency 2: 400 Hz, 4-pole

Cutoff frequency 3: 800 Hz, 4-pole

Cutoff frequency 4: 1000 Hz, 4-pole

Cutoff frequency 5: 400 Hz, 3-pole

ST_ACT100

ST_ACT300

ST_ACT400

ST_ACT800

ST_ACT1000

ST_ACT400_3

—

7.00

3.00

2.50

1.70

1.60

2.40

(19)

132

Offset Monitor Bypass Time after Self Test Deactivation

tST_OMB

—

320

—

(3,7)

133

Time Between Acceleration Data Requests (Same Axis)

tACC_REQ

—

μs

(3,7,20)

134

135

136

Arming Output Activation Time (ARM_X, ARM_Y, IARM = 200μA)

Moving Average and Count Arming Modes (2,3,4,5)

Unfiltered Mode Activation Delay (Reference Figure 30)

Unfiltered Mode Arm Assertion Time (Reference Figure 30)

tARM

tARM_UF_DLY

tARM_UF_ASSERT

5.00

—

1.51

6.579

μs

(3,12)

(3)

137

Sensing Element Natural Frequency

fgcell

10791

13464

15879

(19)

138

Sensing Element Cutoff Frequency (-3 dB ref. to 0 Hz)

fgcell

0.851

1.58

2.29

kHz

(19)

139

Sensing Element Damping Ratio

gcell

2.46

4.31

9.36

—

(19)

140

Sensing Element Delay (@100 Hz)

fgcell_delay

101

187

μs

(19)

141

Sensing Element Step Response (0% - 90%)

tStep_gcell

—

200

μs

(19)

142

Package Resonance Frequency

fPackage

100

—

kHz

(19)

143

Package Quality Factor

qPackage

—

(19)

MMA6525KW Datasheet(PDF) 9 Page - Freescale Semiconductor, Inc

MMA6525KW Datasheet(HTML) 9 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

Datasheet Download

Link URL