[AK4161]

MS1450-E-02-PB

2014/05

- 6 -

ANALOG CHARACTERISTICS

(Ta = -40C ~ 85C, VDD = 3.3V; unless otherwise specified)

Parameter

Symbol

min

typ

max

Unit

A/D Converter

Resolution

RESO

-

10

-

Bits

Touch Sensor

Charge Current Variation Against Nominal Value (Note 6)

ICHG

-30

-

30

%

Power Supply Current

Measurement Current (All function in active)

IMEAS

-

0.765

-

mA

Idle Current

IIDLE

-

3.15

-

uA

Average Supply Current (Note 7)

TSR= 0.25ms

TSR= 0.5ms

TSR= 1ms

TSR= 2ms

TSR= 4ms

TSR=8ms

TSR=16ms

TSR=32ms

TSR=1ms, 20 samplings at 1st order Filter

TSR=32ms, 20 samplings at 1st order Filter

TSR=512ms, 20 samplings at 1st order Filter

IDD

-

-

-

-

-

-

-

-

-

-

-

687

351

177

90

47

25

14

9

489

18

4.1

-

-

-

-

-

-

-

-

-

-

-

uA

uA

uA

uA

uA

uA

uA

uA

uA

uA

uA

Shutdown Current (After External Reset)

ISHUT

-

1.2

8.0

uA

Note 6. Sense terminal voltage condition: The AD conversion value should be less or equal to VDD-0.2[V]. (It should be

less or equal to VDD-0.3[V] when CC2Xn bit= “1”) The charge current is dependent on the operating voltage,

and is configured by register settings in the range of “0.556 x VDD [uA]” to “70.056 x VDD [uA]”.

Note 7. Measurement Condition: 6 active sense terminals, 2us charge period, 6 samplings at 1st order filter for noise

cancelling, using sense terminal with 22pF capacitance.