ST TSL1014 User Manual

14 + 1 channel buffers for TFT-LCD panels

Features

■ Wide supply voltage: 5.5 V to 16.8 V

■ Low operating current: 6 mA typical at 25° C

■ Gain bandwidth product: 1 MHz

■ High current com amplifier: ±100 mA output

current

■ Industrial temperature range: -40° C to +85° C

■ Small package: TQFP48

■ Automotive qualification

TSL1014

7 x 7mm TQFP48

Pin connections (top view)

Application

■ TFT liquid crystal display (LCD)

Description

The TSL1014 is composed of 14 + 1 channel buffers which are used to buffer the reference voltage for gamma correction in thin film transistor (TFT) liquid crystal displays (LCD).

One "COM" amplifier is able to deliver high output current value, up to ±100mA. Amplifiers A and B feature positive single supply inputs for common mode voltage behavior. The amplifiers C to N inclusive, and the COM amplifier, feature negative single-supply inputs and are dedicated to the highest and lowest gamma voltages.

The TSL1014 is fully characterized and guaranteed over a wide industrial temperature range (-40 to +85° C).

VSSVDD

VSSVD D

47

48 44 43 42 41 40 39 38 3746 45

47

48 44 43 42 41 40 39 38 3746 45

Com

L

I

H

F

E

D

C

13 14 15 16 17 18 19 20 21 22

VDD VSS

VSS

VDD

1

2

3

4

5

6

7

8

9

10

11

12

36

23 24

36

35

34

33

32

VSS

31

VDD

30

29

28

27

26

25

N

M

K

J

G

B

A

VDD

VSS

May 2009 Doc ID 11528 Rev 6 1/17

www.st.com

17

Absolute maximum ratings and operating conditions TSL1014

1 Absolute maximum ratings and operating conditions

Table 1. Absolute maximum ratings

Symbol Parameter Value Unit

V

I

OUT

I

SC

P

R

THJA

T

LEAD

T

STG

T

ESD

1. PD is calculated with T

2. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a

1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations

Supply voltage (VDD-VSS)18V

CC

Input voltage V

IN

Output current (A to N buffers) Output current (Com buffer)

Short circuit current (A to N buffers) Short circuit current (Com buffer)

Power dissipation

D

(1)

for TQFP48

-0.5V to V

SS

+0.5V V

DD

30

100

±120 ±300

1470 mW

Thermal resistance junction to ambient for TQFP48 85 °C/W

Lead temperature (soldering 10 seconds) 260 °C

Storage temperature -65 to +150 °C

Junction temperature 150 °C

J

Human body model (HBM)

(2)

(3)

Charged device model (CDM)

= 25° C, TJ = 150° C and R

amb

(4)

= 85° C/W for the TQFP48 package.

THJA

2000

200

1500

while the other pins are floating.

3. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of connected pin combinations while the other pins are floating.

4. Charged device model: all pins and package are charged together to the specified voltage and then discharged directly to the ground through only one pin.

mA

VMachine model (MM)

Table 2. Operating conditions

Symbol Parameter Value Unit

T

V

amb

Supply voltage (VDD-VSS) 5.5 to 16.8 V

CC

Ambient temperature -40 to +85 °C

Input voltage (Buffers A & B) V

V

IN

Input voltage (Buffers C to N + COM) V

2/17 Doc ID 11528 Rev 6

+1.5V to V

SS

to V

SS

DD

-1.5V

DD

V

TSL1014 Typical application schematics

2 Typical application schematics

Figure 1. A typical application schematic for the TSL1014

Vcc

15

22

8

30

7

192021

VDD

A

B

C

D

E

F

G

H

I

J

K

L

M

N

VSS

31

434445

COM

Gamma 13

18

Gamma 12

13

Gamma 11

12

Gamma 10

11

Gamma 9

10

Gamma 8

9

Gamma 7

6

Gamma 6

5

Gamma 5

4

Gamma 4

3

Gamma 3

2

Gamma 2

1

Gamma 1

48

Gamma 0

47

VCOM

46

To colunm driver

Cs

+

10uF

Gnd

Com Ref. Voltage

R1

23

R2

24

R3

25

R4

26

R5

27

R6

28

R7

29

R8

32

R9

33

R10

34

R11

35

R12

36

R13

37

R14

38

Gnd

39

Gnd

Note that:

● Amplifiers A & B have their input voltage in the range V

+1.5 V to VDD. This is why

SS

they must be used for high level gamma correction voltages.

● Amplifiers C to N have their input voltage in the range V

to VDD-1.5 V. This is why

SS

they must be used for medium-to-low level gamma correction voltages.

● Amplifier COM has its input voltage range from V

Doc ID 11528 Rev 6 3/17

to VDD-1.5 V.

SS

Electrical characteristics TSL1014

3 Electrical characteristics

Table 3. Electrical characteristics for TSL1014IF/TSL1014IFT

T

=25°C, VDD=+5V, VSS=-5V, RL=10kΩ, CL=10pF

amb

(unless otherwise specified)

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

ΔV

R

C

V

I

OUT

Input offset voltage V

IO

Input offset voltage drift T

IO

I

Input bias current

IB

Input impedance 1 GΩ

IN

Input capacitance 1.35 pF

IN

Output voltage low

OL

Output voltage high

OH

Output current

PSRR Power supply rejection ratio V

I

SR

Supply current No load 6 8.4 mA

CC

Slew rate (rising & falling edge)

Settling time Settling to 0.1%, V

t

s

BW Bandwidth at -3dB R

G

Phase margin RL=10 kΩ, CL=10 pF 60 degrees

m

Channel separation f=1 MHz 75 dB

C

s

= 0 V 12 mV

ICM

< T

Min

V

ICM

V

ICM

I

OUT

Buffers C to L Buffers M, N & COM

I

OUT

buffers (A & B)

< T

amb

Max

= 0V, buffers A & B = 0V, buffers C to N & COM

=-5mA

= 5 mA for positive single-supply

5 μV/°C

140

70

-4.85

-4.92

-4.80

-4.85

4.82 4.87 V

(A to N buffers) ±30

Com buffer ±100

= 6.5 to 15.5 V 80 100 dB

CC

-4 V < V 20% to 80%

=10 kΩ, CL=10 pF 2 MHz

L

OUT

< +4 V

1V/μs

=2V step 5 μs

OUT

nA

V

mA

Note: Limits are 100% production tested at 25° C. Behavior at the temperature range limits is

guaranteed through correlation and by design.

4/17 Doc ID 11528 Rev 6

TSL1014 Electrical characteristics

Table 4. Electrical characteristics for TSL1014IYF/TSL1014IYFT (automotive grade)

=25°C, VDD=+5V, VSS=-5V, RL=10kΩ, CL=10pF

T

amb

(unless otherwise specified)

Symbol Parameter Test conditions Min. Typ. Max. Unit

V

= 0 V

V

ΔV

R

C

V

I

OUT

Input offset voltage

IO

Input offset voltage drift T

IO

I

Input bias current

IB

Input impedance 1 GΩ

IN

Input capacitance 1.35 pF

IN

Output voltage low

OL

Output voltage high

OH

Output current

PSRR Power supply rejection ratio

I

SR

Supply current

CC

Slew rate (rising & falling edge)

Settling time Settling to 0.1%, V

t

s

BW Bandwidth at -3dB R

G

Phase margin RL=10 kΩ, CL=10 pF 60 degrees

m

Channel separation f=1 MHz 75 dB

C

s

ICM

T

< T

Min

< T

Min

V

ICM

T

< T

Min

V

ICM

T

< T

Min

I

OUT

Buffers C to L

< T

T

Min

Buffers M, N & COM T

< T

Min

I

OUT

buffers (A & B)

< T

T

Min

< T

amb

Max

< T

amb

Max

= 0 V, buffers A & B

< T

amb

Max

= 0 V, buffers C to N & COM

< T

amb

Max

=-5mA

< T

amb

Max

< T

amb

Max

= 5 mA for positive single-supply

< T

amb

Max

5 μV/°C

-4.85

-4.92

4.82

4.87 V

4.80

12

140 280

70

140

-4.80

-4.76

-4.85

-4.83

(A to N buffers) ±30

Com buffer ±100

= 6.5 to 15.5 V

V

CC

T

Min

< T

amb

< T

Max

No load T

< T

Min

-4V < V

amb

OUT

< T

Max

< +4 V

20% to 80%

=2V step 5 μs

OUT

=10 kΩ, CL=10 pF 2 MHz

L

100

80

68.4 9

1V/μs

mV

nA

V

mA

dB

mA

Note: Limits are 100% production tested at 25° C. Behavior at the temperature range limits is

guaranteed through correlation and by design.

Doc ID 11528 Rev 6 5/17

Electrical characteristics TSL1014

Figure 2. Supply current vs. supply voltage

for various temperatures

8

7

6

Tamb=-40°C

Figure 3. Output offset voltage (eq. VIO) vs.

temperature

1.0

0.5

0.0

Tamb=+25°C

Current consump tion (mA)

5

Tamb=+85°C

Output offset voltage (mV)

-0.5

VCC = +5.5V, +10V, +16.8V

4

4 6 8 1012141618

Sup ply v olta ge (V)

-1.0

-40-20 0 20406080

Ambient temperature (°C)

Figure 4. Input current (IIB) vs. temperature Figure 5. Input current (IIB) vs. temperature

120

100

80

120

100

Buffers C to COM VCC = +5.5V, +10V, +16.8V

80

60

40

Input bias current (nA)

Buffers A & B

20

VCC = +5.5V, +10V, +16.8V

0

-40-20 0 20406080

Ambient Temperature (°C)

Figure 6. Output current capability vs.

temperature

200

150

100

50

VCC=5.5V

0

-50

Output current (mA)

-100

Buffers A & B

-150

-200

-40-20 0 20406080

VCC=10V

Ambient Temperature (°C)

VCC=16.8V

60

40

Input bias current (nA)

20

0

-40-20 0 20406080

Ambient Temperature (°C)

Figure 7. Output current capability vs.

temperature

80

60

40

20

0

VCC=5.5V

-20

Output current (mA)

VCC=10V

-40

-60

-80

Buffers C to N

-40-200 20406080

Ambient Tem perature (°C)

VCC=16.8V

6/17 Doc ID 11528 Rev 6