MMA7660FC datasheet(8/35 Pages) FREESCALE

8 / 35 page

Sensors

Freescale Semiconductor, Inc.

MMA7660FC

Notes

1. These parameters are tested in production at final test.

2. Assuming VDD power on slope is < 1 ms.

3. A measure of the devices ability to reject an acceleration applied 90° from the true axis of sensitivity.

4. Noise is defined as quantiles given to a sample size. These are the occurrences of noise: 94% = ±1 count, 5% = ±2 counts, and 1% = ±3

counts.

Table 4. Operating Characteristics

Unless otherwise noted: -40°C < TA < 85°C, 2.4 V < AVDD < 3.6 V, 1.71 V < DVDD < 3.6 V, Acceleration = 0g

Typical values are at AVDD = 2.8 V, DVDD = 2.8 V, TA = +25°C

Characteristics

Symbol

Min

Typ

Max

Unit

Analog Supply Voltage

Standby/Operation Mode

AVDD

2.4

2.8

3.6

Enable Bus Modeon Mode

AVDD

Digital I/O Pins Supply Voltage

Standby/Operation Mode

DVDD_IO

1.71

2.8

AVDD

Enable Bus Modeon Mode

DVDD_IO

1.71

1.8

3.6

Supply Current Drain

Off Mode

IDD

0.4

µA

Power Down Mode

IDD

µA

Standby Mode(1)

IDD

µA

Active Mode, ODR = 1

IDD

µA

Active Mode, ODR = 2

IDD

µA

Active Mode, ODR = 4

IDD

µA

Active Mode, ODR = 8

IDD

µA

Active Mode, ODR = 16

IDD

µA

Active Mode, ODR = 32

IDD

133

µA

Active Mode, ODR = 64

IDD

221

µA

Active Mode(1), ODR = 120

IDD

294

µA

Acceleration Range

±1.5

Operating Temperature Range

-40

°C

0g Output Signal (TA = 25°C, AVDD = 2.8 V)

0g Offset ±1.5g range(1)

VOFF

-3

counts

0g Offset Temperature Variation

-1.3

+1.5

-1.0

mg/°C

Sensitivity(1) (TA = 25°C, AVDD = 2.8 V)

±1.5g range 6-bit

21.33

count/g

Acceleration Sensitivity at TAMB

19.62

21.33

23.04

count/g

Acceleration Sensitivity Temperature Variation

±0.01

%/°C

Input High Voltage

VIH

0.7 x DVDD

Input Low Voltage

VIL

0.35 x DVDD

Output Low Voltage (IOL = 6 mA + SDA, INT)

VOL

0.5

Input Leakage Current

IIH, IIL

0.025

µA

Internal Clock Frequency(1) (TA = 25°C, AVDD = 2.8 V)

tCLK

135

150

165

kHz

I2C Interface Speed

400

kHz

Control Timing

Turn on time from AVDD = 0 V to AVDD = 2.5 V

(2)

1.3

Turn off time from Active to Standby Mode

Turn on time Standby to Active Mode

12 ms + 1/ODR

Timing Clock Source Accuracy (TA = 25°C, DVDD = 1.8 V)

-10

Timing Clock Source Temperature Variation

-15

Cross Axis Sensitivity(3)

±1

Noise(4)

±1

count

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