EEWORLDEEWORLDEEWORLD

Part Number

Search

AK8998

Description
Preliminary
File Size988KB,59 Pages
ManufacturerAKM [Asahi Kasei Microsystems]
Download Datasheet Compare View All

AK8998 Overview

Preliminary

[AK8998/W/D]
Preliminary
AK8998/W/D
The AK8998 is a pressure sensor interface IC that features compensation for temperature drift and sensor
variation. It is designed to excite and interface to a bridge sensor. Variations in the sensor can be
corrected via compensation values stored in integrated non-volatile memory (EEPROM). Compensation
values are obtained from measurement results for a set of offset voltages and temperature drift, along with
a set of bridge voltages and temperature drift, including characteristics of the AK8998. The AK8998 is
available in a 16-pin QFN package, in wafer form and in a tray.
Features
Pressure sensor compensation and excitation IC (Analog output)
Supply voltage current: 7.1mA max @10kHz sampling
Supply voltage: 3.0V±5%, 3.3V±5%, 5.0V±5%
Operating temperature range: -20 to 85ºC
Integrated sensor output compensation (AK8998 Input conversion)
Offset voltage adjustment
-
Adjustment range: Rough ±13 to ±373mV / Fine ±1 to ±34mV @5.0V
-
Adjustment step: Rough 2 to 53mV /step / Fine 0.01 to 0.27mV /step @5.0V
Offset voltage temperature drift adjustment (1st order coefficient)
-
Adjustment range: ±0.04 to ±1.23mV/ºC @5.0V
-
Adjustment step: 0.2 to 4.8µV/ºC @5.0V
Output span voltage adjustment (G1, G2, G3)
-
Total adjustment range:
5.7 to 261.6mV @5.0V
-
G1 adjustment step :
0.95 to 74.7mV /step @5.0V
-
G2 adjustment step :
5.7 to 130.8mV /step @5.0V
-
G3 adjustment step :
0.01 to 0.40mV /step @5.0V
Sensitivity temperature drift adjustment (1st order coefficient)
-
Adjustment range: -4000ppm/ºC to +2500ppm/ºC or -2500ppm/ºC to +1000ppm/ºC
-
Adjustment step: 18ppm/ºC step
Integrated output reference voltage adjustment function
-
Adjustment range: 0.02*VDD to 0.98*VDD
-
Adjustment step: 10mV /step @5.0V
Integrated sampling frequency switching function :
1kHz, 10kHz
Integrated analog circuit reference voltage stabilizer
(Add an external capacitor to AGND pin as needed)
SCF and SMF included for band limitation:
fc:1.0kHz, 500Hz, 250Hz
2 wire serial interface (CSCLK, VOUT)
Ratiometric voltage output
Integrated constant voltage source for pressure sensor: 2.2V @ 3.0, 3.3V±5%
4.0V or 2.2V @ 5.0V±5%
Integrated pressure detectors (x2)
-
Detection threshold adjustment control
-
Adjustment range: 0.125*VDD to 0.9*VDD
-
Adjustment step: 0.025*VDD /step
-
Detection threshold external setting function (DET2 / PTH pin use)
-
hysteresis voltage adjustment control
-
Adjustment range: 0.03*VDD to 0.06*VDD
-
Adjustment step: 0.01*VDD /step
Integrated reference voltage & reference current generator
-
VREF voltage adjustment control
-
Resolution: 3bits
-
Adjustment step: 1% /step
MSxxxxx-E-00
-1-
2012/11

AK8998 Related Products

AK8998 AK8998D AK8998W
Description Preliminary Preliminary Preliminary
Application of Bypass Capacitors in High-Speed Circuit Environment
The attached document is TI's technical document Application of Bypass Capacitors in High-Speed Circuits. This document has a clear definition of bypass, which can further verify the relationship betw...
nathanzhang Analog electronics
Performance comparison of major FPGAs
The chips used more in China are xilinx, altera and lattice. xilinx has more product series and is quite useful, but the development environment is a bit complicated. xilinx uses three-state connectio...
1ying Automotive Electronics
How does the encoder calculate length? Speed?
The motor is connected to the spindle, which has an incremental rotary encoder. The encoder is 1600 lines, the spindle diameter is 150mm, and the spindle rotates at variable speed. 1. What is the curr...
eeleader Industrial Control Electronics
Design of software and hardware C delay program for MSP430
MSP430 is an ultra-low power 16-bit microcontroller, which is increasingly favored by electronic engineers and widely used. C programs are intuitive, readable, easy to transplant and maintain, and hav...
火辣西米秀 Microcontroller MCU
Saber open question
I just installed Saber and this happens when I open it. How can I solve it? Thank you....
Traceur Power technology
Help, Butterworth resonant circuit simulation
I want to ask the experts to help me design a 5-stage Butterworth bandpass filter with a center frequency of 500K and simulate it with Multisim....
刘木木 Analog electronics

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1231  848  361  2345  1093  25  18  8  48  23 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号