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PDF AK09911 Data sheet ( Hoja de datos )
| Número de pieza | AK09911 | |
| Descripción | 3-axis Electronic Compass | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AK09911]
AK09911
3-axis Electronic Compass
1. Features
A 3-axis electronic compass IC with high sensitive Hall sensor technology.
Best adapted to pedestrian city navigation use for cell phone and other portable appliance.
Functions:
3-axis magnetometer device suitable for compass application
Built-in A to D Converter for magnetometer data out
14-bit data out for each 3-axis magnetic component
Sensitivity: 0.6 µT/LSB (typ.)
Serial interface
I2C bus interface
Standard, Fast and High-speed mode (up to 2.5 MHz) compliant with Philips I2C specification Ver.2.1
Operation mode
Power-down, Single measurement, Continuous measurement, Self-test and Fuse ROM access
DRDY function for measurement data ready
Magnetic sensor overflow monitor function
Built-in oscillator for internal clock source
Power on Reset circuit
Self test function with internal magnetic source
Operating temperatures:
-30˚C to +85˚C
Operating supply voltage:
Analog power supply
+2.4V to +3.6V
Digital Interface supply
+1.65V to analog power supply voltage
Current consumption:
Power-down:
3 µA (typ.)
Measurement:
Average current consumption at 100 Hz repetition rate: 2.4 mA (typ.)
Package:
AK09911C 8-pin WL-CSP (BGA):
1.2 mm × 1.2 mm × 0.5 mm (typ.)
MS1526-E-01
-1-
2014/7
1 page  
4.1. Block Diagram
3-axis
Hall
sensor
MUX
4. Circuit Configration
Chopper
SW
Pre-
AMP
Magnetic source
HE-Drive
VREF
OSC
Timing
Control
Integrator＆ADC
Interface Logic
& Register
[AK09911]
SCL
SDA
RSTN
POR
FUSE ROM
TST CAD
VSS VDD VID
4.2. Block Function
Block
3-axis Hall sensor
MUX
Chopper SW
HE-Drive
Pre-AMP
Intergrator & ADC
OSC
POR
VREF
Interface Logic
&
Register
Timing Control
Magnetic Source
FUSE ROM
Function
Monolithic Hall elements.
Multiplexer for selecting Hall elements.
Performs chopping.
Magnetic sensor drive circuit for constant-current driving of sensor.
Fixed-gain differential amplifier used to amplify the magnetic sensor signal.
Integrates and amplifies pre-AMP output and performs analog-to-digital
conversion.
Generates an operating clock for sensor measurement.
Power On Reset circuit. Generates reset signal on rising edge of VDD.
Generates reference voltage and current.
Exchanges data with an external CPU.
I2C bus interface using two pins, namely, SCL and SDA. Standard, Fast and
High-speed modes are supported. The low-voltage specification can be supported
by applying 1.65V to the VID pin.
Generates a timing signal required for internal operation from a clock generated by
the OSC.
Generates magnetic field for self test of magnetic sensor.
Fuse for adjustment.
MS1526-E-01
-5-
2014/7
5 Page 
High-speed mode (Hs-mode)
Cb≤100pF (Cb: load capacitance)
fSCLH≤2.5MHz
Symbol
Parameter
fSCLH
SCLH clock frequency
tHIGH
SCLH clock “High” time
tLOW
SCLH clock “Low” time
tR_CL
SCLH rise time
tR_CL1
SCLH rise time after a repeated START
condition and after an acknowledge bit
tR_DA
SDAH rise time
tF_CL
SCLH fall time
tF_DA
SDAH fall time
tHD:STA
Start Condition hold time
tSU:STA
Start Condition setup time
tHD:DAT SDAH hold time (vs. SCLH falling edge)
tSU:DAT SDAH setup time (vs. SCLH rising edge)
tSU:STO
Stop Condition setup time
tSP Noise suppression pulse width
Cb≤400pF
fSCLH≤1.7MHz
Symbol
Parameter
fSCLH
SCLH clock frequency
tHIGH
SCLH clock “High” time
tLOW
SCLH clock “Low” time
tR_CL
SCLH rise time
tR_CL1
SCLH rise time after a repeated START
condition and after an acknowledge bit
tR_DA
SDAH rise time
tF_CL
SCLH fall time
tF_DA
SDAH fall time
tHD:STA
Start Condition hold time
tSU:STA
Start Condition setup time
tHD:DAT SDAH hold time (vs. SCLH falling edge)
tSU:DAT SDAH setup time (vs. SCLH rising edge)
tSU:STO
Stop Condition setup time
tSP Noise suppression pulse width
Min.
110
220
10
10
10
-
-
160
160
0
10
160
Min.
120
320
20
20
20
-
-
160
160
0
10
160
Typ.
Typ.
Max.
2.5
40
80
80
40
80
10
Max.
1.7
80
160
160
80
160
10
[AK09911]
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MS1526-E-01
- 11 -
2014/7
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK09911.PDF ] | |
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