–3–

REV. PrG

2/03

ADM8840-SPECIFICATIONS

PRELIMINARY TECHNICAL DATA

C1,C5,C10=3.3 F; C2,C3,C4,C8,C9=0.22 F; C6,C11,C12,C13=4.7 F; C7 =2.2 F

PARAMETER

Min

Typ

Max

Units

Test Conditions

2.7

3.3

3.6

V

750

uA

O/Ps Unloaded; COM_IN Low;

DAC1_SD, DAC2_SD Low

5

uA

Shutdown Mode

DAC1_IN and DAC2_IN should

be open circuit because there

is a voltage on these pins due to

the output of the DAC.

CHARGE PUMP REGULATOR

+5.0V OUTPUT

Output Voltage

4.9

5.0

5.1

V

Output Current

5

m A

Output Ripple

10

mV p-p

5mA load

Transient Response

5

us

+15.0V OUTPUT

Output Voltage

14.0

15.0

16.0

V

Output Current

50

150

uA

Output Ripple

50

mV p-p

-15.0V OUTPUT

Output Voltage

-16.0

-15.0

-14.0

V

Output Current

-150

-50

uA

Output Ripple

50

mV p-p

Charge-Pump Frequency

T B D

100

T B D

k H z

DIGITAL INPUT PINS

V

V

Digital Input Current

1

A

Digital Input Capacitance

10

p F

Note 1.

COM DRIVER

COM_OUT

Amplitude

4

7

V

Amplitude Stepsize

28

m V

Amplitude Accuracy

<10%

%

DAC1 loaded with preset values;

Measured at TRANS_OUT

DAC1 preset values is 1V and

Vcom should be 6V

Center Voltage

0.9

1.8

2.8

V

Center Voltage Stepsize

14

m V

Center Voltage Accuracy

<10%

%

DAC2 loaded with preset values

DAC2 preset values is 500mV and

Vcentre should be 1.5V.

Rise/Fall Time

1

Center Voltage Settling Time

T B D

us

PANEL

Load Capacitance

20

n F

POWER EFFICIENCY

70

%

+/-15V Load = +/-100uA;

COM_IN Freq = 10kHz;

Vcc=2.7V;

Note 2

NOTES

1. Guaranteed by Design. Not 100% Production Tested.

2. COM Driver load is defined as the load current flowing through C13 with DACs loaded with preset values.

* Specifications are target values and are subject to change without notice.