The world’s premier supplier o
Touchscreen
Controllers
AKM offers several Touchscreen Controllers, either in stand-alone form or integrated with audio CODEC’s.
The heart of our Touchscreen Controllers are 12-bit, 125kHz SAR-type A/D converters. The controllers
accept 4-wire pen input, and they are capable of measuring pressure as well as position. They also
inlcude integrated references, battery monitors and temperature sensors. For portable applications,
battery monitors are also included.
I
2
C Control for Portable Apps
Keypad Scanner and LED Control
www.akm.com
AK4183
• 4-wire touchscreen controller
• I

C control
• Pen pressure measurement
• Low power operation:
• .5V to .6V, 68mA
• 10-pin MSOP package (11.6mm

)
AK4181A
AV
dd
IOV
dd
Features
Interface
Active Current
Internal Vref
Package
Industry
Compatibility
2.7V to 3.6V
2.7V to 3.6V
X, Y, pen pressure,
IN, VBAT, temp
SPI
250mA
Yes
16-TSSOP
ADS7846N
AD7843ARU
MXB7846
AK4184
• 4-wire touchscreen controller
• 6 X 5 keypad matrix scanner
• Pen pressure measurement
• PWM generator for LED brightness
• Low power operation:
• .5V to .6V, 400mA
• 41-pin BGA package (16mm

)
AK4182A
2.2V to 3.6V
1.5 to AV
dd
X, Y, pen pressure,
IN, VBAT, temp
SPI
260mA
Yes
16-QFN
ADS7846IR
AD7843
AK4182
2.2V to 3.6V
1.5 to AV
dd
X, Y, pen pressure,
IN, VBAT, temp
SPI
260mA
Yes
16-QFN
AKM Proprietary
AK4183
2.5V to 3.6V
2.5V to 3.6V
X, Y
I
2
C
68mA
No
10-MSOP
AKM Proprietary
AK4184
2.5V to 3.6V
1.6V to AV
dd
X, Y, pen pressure,
GPIO, LED bias,
keypad scanner
SPI
400mA
No
41-BGA
AKM Proprietary
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