ak4182a AKM Semiconductor, Inc., ak4182a Datasheet
ak4182a
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ak4182a Summary of contents
Page 1
... On-chip VREF can be utilized for analog auxiliary input, temperature measurement and battery monitoring with the ability to measure voltage from 0V to 5V. The AK4182A also has an on-chip temperature sensor. The AK4182A is available in 16pin QFN thin package (0.75mm in height) and has the operating temperature range of -40°C to +85°C Control ...
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... ASAHI KASEI ■ Ordering Guide -40°C ∼ +85°C AK4182AVN ■ Pin Layout MS0482-E-01 16pinQFN BUSY DIN CSN DCLK 2 [AK4182A] IN VBAT GND YN 2006/12 ...
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... This pin is Hi-Z state at CSN= “H” Serial Data Input Inputs 8-bit control command data serially when CSN= “L” AK4182A latches at the rising edge of DCLK. Must keep “L” while not issuing commands. Chip Select Input Enables writing data to the registers when CSN= “L”. ...
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... WARNING: AKEMD assumes no responsibility for the usage beyond the conditions in this datasheet. MS0482-E-01 ABSOLUTE MAXIMUM RATINGS Symbol min VCC -0.3 IOVDD -0.3 IIN VIN -0.3 IOUTDRV Ta Tstg Symbol min VCC 2.7 IOVDD 1.5 4 [AK4182A] max 6.0 6.0 ±10 - 6.0(VCC+0.3) 50 -40 85 -65 150 typ max 3.3 3.6 3.3 VCC 2006/12 Units ...
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... Note 3. “Ideal” value derived from theory Note 4. Accuracy is defined as the difference between the voltage measured by two current sources, and the ideal voltage derived from theory at specific temperatures. MS0482-E-01 ANALOG CHARACTERISTICS min 11 0 2.44 0.1 5 -40 5 [AK4182A] typ max Units 12 Bits 12 Bits ±2 LSB ±1 ±2 LSB ...
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... PD0 Figure 1 AK4182A Timing Diagram 6 [AK4182A] typ max - - 0.2xIOVDD 0 typ max 125 2100 200 200 160 160 0 200 200 t9 D11 D10 ...
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... The architecture is based on capacitive redistribution algorithm, and an internal capacitor array functions as the sample/hold (S/H) circuit. The SAR A/D converter output is a straight binary format as shown below: (ΔVREF-2.5LSB) ~ (ΔVREF-1.5LSB) The full scale (ΔVREF) of the A/D converter depends on the input mode. The AK4182A is controlled by the 8 bit serial command on DIN. ■ Analog Inputs Analog input is selected via the A2, A1, A0 and SER/ DFR bits in the control register. If the analog inputs are selected to the X or Y-axis, SER/ DFR = “ ...
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... X-position, Y-Position, and Z1-Position, and then using the following formula: Rtouch = (Rxplate*Xposition/4096)*[(4096/Z1) – 1] – Ryplate*[1 – (Yposition/4096)] MS0482-E-01 XP VREF YP ADC VREF Y-Position Measurement Differential Mode Figure 2 Axis Measurement 8 [AK4182A AIN+ YP AIN 2006/12 ...
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... Voltage Reference The AK4182A has an internal 2.5V voltage reference. This reference can be turned ON when PD1 = “1”, and OFF when PD1 = “0”. This reference is used in the single-ended mode for the battery monitoring, temperature measurement, or for auxiliary input. A 0.1μF or larger capacitor should be connected for stable operation of the VREF circuit. Settling time depends on this external capacitance, but 500μ ...
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... I As the AK4182A has two different fixed current circuits and a diode (temperature sensor), the temperature can be measured by using two different methods. The first method needs two conversions, but can derive the temperature directly without knowing the voltage at a specific temperature. From equation < ...
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... Control Command The control command, 8 bits, provided to the AK4182A via DIN is shown in the following table. This command includes start bit, channel selection, resolution, measurement configuration, and power-down mode. The AK4182A latches the serial command at the rising edge of DCLK. Refer to the detailed information regarding the bit order, function, the status of driver switch, ADC input, ...
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... The AK4182A supports sleep mode that enables touch panel to put open state and disables pen interrupt function. The AK4182A goes into sleep mode when the AK4182A gets the sleep control command. The selection of the Sleep mode is set by “MODE” bit. The state of both the output of the PENIRQN pin and the connection with touch panel interface (XP, YP, XN, and YN) are the ...
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... BUSY and DOUT goes to “L” from Hi-Z state at the falling edge of CSN. The AK4182A latches the 8bit control word serially via DIN at the rising edge of DCLK. As the AK4182A starts the command decoding at the first “H” bit after CSN= “ ↓ ”, MSB (S bit) of the command must be “ ...
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... Pen Interrupt The AK4182A has pen interrupt function to detect the pen touch. Pen interrupt function is enabled at power-down state. YN pin is connected to GND at the PEN interrupt enabled state. And XP pin is pulled up via an internal resistor (Ri), typically 50k Ω touch plate is pressed by pen, the current flows via <VCC> – <Ri> – <XP> –<the plates> - <YN>- <GND>. The resistance of the plate is generally 1K Ω ...
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... PD0)); /* CSN= “H”, (PD0, PD1) is not (1,1) */ MS0482-E-01 Region SER/ A0 PD1 PD0 DFR X-axis Measurement */ /* Z1 Measurement */ /* Z2 Measurement */ /* Y-axis Measurement */ 15 Region iii [AK4182A] 2006/12 ...
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... Note: The thermal die pad must be open or connected to the ground. ■ Package & Lead frame material Package molding compound: Epoxy Lead frame material: Cu Lead frame surface treatment: Solder (Pb free) plate MS0482-E-01 PACKAGE #8 #5 EXPOSED THERMAL DIE PAD 0.65 16 BOTTOM VIEW 2.1 ± 0.15 #9 #12 #13 # 0.10 M 0.3 ± 0.05 PIN #1 I.D. × (0. [AK4182A] 2006/12 ...
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... ASAHI KASEI . MS0482-E-01 MARKING 4182A XXXX 1 XXXX: Date code identifier (4 digits) 17 [AK4182A] 2006/12 ...
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... A note of thermal die pad was changed. The thermal die pad is tied to PCB substrate (GND). → The thermal die pad must be open or connected to the ground. IMPORTANT NOTICE , and AKEMD assumes no responsibility for such use, except Note2) 18 [AK4182A] in any safety, life Note1) 2006/12 ...