MAX9650_1007 datasheet(4/13 Pages) MAXIM

Part #	MAX9650_1007

Description	High-Current VCOM Drive Op Amps for TFT LCDs

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Manufacturer	MAXIM [Maxim Integrated Products]

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4 / 13 page

High-Current VCOM Drive Op Amps

for TFT LCDs

4

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VDD = 19V, GND = 0, VCM = VOUT = VDD/2, TA = +25°C, unless otherwise specified.)

0

2

1

4

3

7

6

5

8

-50

0

-25

25

50

75

100

125

SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

IOUT

(500mA/div)

VOUT

(125mV/div)

LOAD TRANSIENT

SOURCING

TIME (1

μs/div)

0.1A RESPONSE

1A RESPONSE

0.5A RESPONSE

IOUT

(500mA/div)

VOUT

(125mV/div)

LOAD TRANSIENT

SINKING

TIME (1

μs/div)

0.1A RESPONSE

1A RESPONSE

0.5A RESPONSE

100ms/div

STARTUP WAVEFORM

IDD

10mA/div

VDD

10V/div

VIN

5V/div

VOUT

5V/div

MAX9650 toc07

2

μs/div

MAX9650 STEP RESPONSE

WITH VARIOUS CL

VOUT

5V/div

VOUT

5V/div

VOUT

5V/div

VOUT

5V/div

MAX9650 toc08

CL = 10pF

CL = 2200pF

CL = 0.01

μF

CL = 0.022μF

OPEN-LOOP GAIN AND PHASE

vs. FREQUENCY

MAX9650 toc09

FREQUENCY (Hz)

10E+6

1E+6

10E+3

100E+3

1E+3

100E+0

-60

-40

-20

0

20

40

60

80

100

120

-80

10E+0

100E+6

GAIN

PHASE

CL = 100pF

-180

-120

-60

0

60

120

180

240

300

360

-240

CLOSED-LOOP SMALL-SIGNAL FREQUENCY

RESPONSE FOR VARIOUS CL

FREQUENCY (MHz)

10

1

0.1

-10

-5

0

5

10

15

20

-15

0.01

100

CL = 0.1

μF

CL = 0.01

μF

CL = 100pF

CL = 56pF

CL = 10pF

CL = 560pF

CL = 0.001

μF

CL = 0.0022

μF

SMALL-SIGNAL GAIN

vs. FREQUENCY

FREQUENCY (Hz)

10E+6

1E+6

-6

-5

-4

-3

-2

-1

0

1

2

3

-7

100E+3

100E+6

VOUT = 100mVP-P

RL = 10k

Ω TO VDD/2

SMALL-SIGNAL GAIN vs. FREQUENCY

WITH VARIOUS CL

FREQUENCY (Hz)

10E+6

1E+6

-20

-15

-10

-5

0

5

10

15

20

-25

100E+3

100E+6

10,000pF

1000pF

100pF

10pF

VOUT = 100mVP-P

RL = 10k

Ω TO VDD/2

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