Rainbow-electronics MAX9621 Bedienungsanleitung

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_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Dual, 2-Wire Hall-Effect Sensor Interface with
Analog and Digital Outputs
MAX9621
General Description
The MAX9621 is a continuation of the Maxim family of
Hall-effect sensor interfaces that already includes the
MAX9921. The MAX9621 provides a single-chip solution
to interface two 2-wire Hall-effect sensors to low-voltage
microprocessors (FP) through either a digital output for
Hall-effect switches or an analog output for linear infor-
mation or both.
The MAX9621 protects the Hall sensors from supply
transients up to 60V at the BAT supply. Normal operating
supply voltage ranges from 5.5V to 18V. If the BAT sup-
ply rises above 18V, the MAX9621 shuts off the current to
the Hall sensors. When a short-to-ground fault condition
is detected, the current to the Hall input is shut off and
the condition is indicated at the analog output by a zero-
current level and a high digital output.
The MAX9621 provides a minimum of 50Fs blanking
time following Hall sensor power-up or restart. The open-
drain digital outputs are compatible with logic levels up
to 5.5V.
The MAX9621 is available in a 3mm x 5mm, 10-pin
FMAX
M
package and is rated for operation in the -40NC
to +125NC temperature range.
Applications
Window Lifters
Seat Movers
Electric Sunroofs
Seatbelt Buckles
Door Power Locks
Ignition Key
Steering Column
Speed Sensing
Features
S Provides Supply Current and Interfaces to Two
2-Wire Hall-Effect Sensors
S 5.5V to 18V Operating Voltage Range
S Protects Hall Sensors Against Up to 60V Supply
Transients
S Low-Power Shutdown for Power Saving
S Filtered Digital Outputs
S Analog Output Mirrors the Hall Sensor Current
S Hall Inputs Protected from Short to Ground
S Hall Sensor Blanking Following Power-Up and
Restart from Shutdown and Short to Ground
S Operates with ±3V Ground Shift Between the Hall
Sensor and the MAX9621
S ±2kV Human Body Model ESD and ±200V Machine
Model ESD at All Pins
S 3mm x 5mm, 10-Pin µMAX Package
19-5024; Rev 0; 11/09
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Functional Diagram
Typical Application Circuit appears at end of data sheet.
EVALUATION KIT
AVAILABLE
PART TEMP RANGE PIN-PACKAGE
MAX9621AUB+T
-40NC to +125NC 10 FMAX
BAT
REFERENCE
SLEEP-MODE
CONTROL
FILTER
AOUT1
10k
I
AOUT2
DOUT1
INPUT
SHORT
DETECTION
ISET
IN1
REF
REF
BAT
BAT
MAX9621
SLEEP
FILTER
DOUT2
IN2
REF
GND
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Inhaltsverzeichnis

Seite 1 - Analog and Digital Outputs

_______________________________________________________________ Maxim Integrated Products 1For pricing, delivery, and ordering information, pleas

Seite 2

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX962110Hall Input Short-to-Battery ConditionThe MAX9621 interprets a short

Seite 3

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX962111Sleep Mode Input (SLEEP)The MAX9621 features an active-low SLEEP in

Seite 4

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX962112Sleep ModeSleep mode can be used in applications that do no

Seite 5

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX962113 Chip InformationPROCESS: BiCMOS

Seite 6

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX9621Maxim cannot assume responsibility for use of any circuitry other than

Seite 7 - RESPONSE TO SHORT TO GROUND

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX96212Stresses beyond those listed under “Absolute Maximum Ratings” may ca

Seite 8

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX96213DC ELECTRICAL CHARACTERISTICS (continued)(VBAT = 13.6V, VSLEEP = 5V,

Seite 9 - Hall Sensor Protection

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX96214

Seite 10 - Hall Input Short to Ground

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX96215 Typica

Seite 11 - Short to Ground

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX96216 Typical Operating Charact

Seite 12 - Hall-Effect Sensor Selection

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX96217 Typical Operating Charact

Seite 13

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX96218

Seite 14

Dual, 2-Wire Hall-Effect Sensor Interface with Analog and Digital OutputsMAX96219 Detailed DescriptionThe MAX9621, an interfac

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