Datasheet > AK8999AD

AK8999AD

更新时间： 2024-09-25 01:13:31

品牌	Logo	应用领域
AKM		/
页数	文件大小	规格书
68页	1264K
描述
Pressure Sensor Control IC

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AK8999AD 数据手册

CONFIDENTIAL

[AK8999A/AW/AD]

AK8999A/AW/AD

Pressure Sensor Control IC

1. Genaral Description

The AK8999A is a piezoresistive semiconductor pressure sensor control IC that compensates temperature

drifts and sensor variations. Variations in the sensor can be corrected with compensation values stored in

an integrated non-volatile memory (EEPROM).

The primary characteristics and its associated temperature drifts of pressure sensors are corrected with the

1st order coefficient for temperature compensation or the quasi 2nd order coefficient for temperature

compensation by piecewise linear approximation (1st order independent coefficients can be set for high and

low temperature side on the basis of 25C) by integrated temperature compensation circuits for offset

voltage and span voltage.

The AK8999A integrates two pressure threshold detectors. When a pressure exceeds the detection

threshold stored in the EEPROM is applied, the DET1 and the DET2/PTH pins output “H” or “L” (the

output polarity is selectable). This output can be used as a control signal of pressure switch applications.

Accessing to the AK8999A is made via the 2-wire serial interface on CSCLK pin and VOUT pin (set as

digital I/O mode) for setting functions and storing compensation values.

The AK8999A is available in a 16-pin UQFN package, in wafer form or in a die on a tray.

2. Feartures

• Pressure sensor compensation and excitation IC (Analog output)

• Supply voltage current

• Supply voltage

• Operating temperature range

: 8.5mA max @ 8.33kHz sampling

: 3.0V ± 10%, 3.3V ± 10%, 5.0V ± 10%

: -40 to 105 C

• Integrated sensor output compensation (AK8999A Input conversion)

- Offset voltage adjustment

Adjustment range

Adjustment step

: Coarse ±13 to ±373mV, Fine ±1 to ±34mV @VDD:5.0V

: Coarse 2 to 53mV /step, Fine 0.01 to 0.27mV /step @ VDD:5.0V

- Offset voltage temperature drift adjustment

(1st order or Quasi 2nd order correction by piecewise linear approximation)

Adjustment range

Adjustment step

- Output span voltage adjustment (G1, G2, G3)

: ±0.04 to ±1.23mV/C @ VDD:5.0V

: 0.2 to 4.8μV/C @ VDD:5.0V

Total adjustment range

G1 adjustment step

G2 adjustment step

G3 adjustment step

: 3.4 to 261.6mV @ VDD:5.0V

: 0.57 to 74.7mV /step @ VDD:5.0V

: 3.43 to 130.8mV /step @ VDD:5.0V

: 0.01 to 0.40mV /step @ VDD:5.0V

- Sensitivity temperature drift adjustment

(1st order or Quasi 2nd order correction by piecewise linear approximation)

Adjustment range

Adjustment step

• Integrated output reference voltage adjustment function

: -4000ppm/ C to 2500ppm/ C

: 18ppm/ C /step

Adjustment range

Adjustment step

: 0.02*VDD to 0.98*VDD

: 0.002*VDD /step

• Integrated sampling frequency switching function

: 0.83kHz, 8.33kHz

• Integrated analog circuit reference voltage stabilizer

• SCF and SMF included for band limitation

: fc = 1.0kHz, 500Hz, 250 Hz

• 2-wire serial interface (CSCLK, VOUT pin)

• Ratiometric voltage output

MS1600-E-00

2014/05

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AK90GB80	SANREX	获取价格	THYRISTOR MODULE
AK90HB	SANREX	获取价格	Trigger Device

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