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Rohm Semiconductor Electronic Components Datasheet

BD8139AEFV Datasheet

High-precision Gamma Correction

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Power Supply IC Series for TFT-LCD Panels
High-precision
Gamma Correction ICs with built-in DAC
BD8132FV, BD8139AEFV
No.09035EBT02
Description
These gamma correction voltage generation ICs feature built-in DACs and provide a single-chip solution with setting control
via serial communications, a high-precision 10-bit DAC, an output amp (18-channel or 10-channel), and Vcom.
Features
1) Single-chip design means fewer components
2) Built-in 10 bit DAC (18ch: BD8132FV, 10ch: BD8139AEFV)
3) Built-in DAC output amp
4) Built-in Vcom amp
5) Built-in auto-read function
6) 3-line serial interface (BD8132FV) or 2-wire serial (BD8139AEFV)
7) Thermal shutdown circuit
8) SSOP-B40 package (BD8132FV) / HTSSOP-B40 package (BD8139AEFV)
Applications
These ICs can be used with TFT LCD panels used by large-screen and high-definition LCD TVs.
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limit
Power supply voltage 1
DVcc
7
Power supply voltage 2
Vcc 20
REFIN voltage
REF
20
Amp output current capacity
Io 50*1
Junction temperature
Tjmax
150
Power dissipation
BD8132FV
BD8139AEFV
Pd
1125*2
1600*3
Operating temperature range
Topr -30 to +85
Storage temperature range
Tstg -55 to +150
*1 Must not exceed Pd.
*2 Reduced by 9.0 mW/°C over 25°C, when mounted on a glass epoxy board (70 mm 70 mm 1.6 mm).
*3 Reduced by 12.8 mW/°C over 25°C, when mounted on a glass epoxy board (70 mm 70 mm 1.6 mm).
Unit
V
V
V
mA
mW
Recommended Operating Ranges
Parameter
Power supply voltage 1
Power supply voltage 2
REFIN voltage
Amp output current capacity
Serial clock frequency (BD8132FV)
2 wire serial frequency (BD8139AEFV)
OSC frequency (BD8132FV)
OSC frequency (BD8139AEFV)
Symbol
DVcc
Vcc
REF
Io
fCLK
fCLK
fosc
fosc
Limit
Min. Max.
2.3 4.0
6 18
6 18
— 40
—5
— 400
10 200
— 400
Unit
V
V
V
mA
MHZ
kHz
kHz
kHz
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/20
2009.07 - Rev.B


Rohm Semiconductor Electronic Components Datasheet

BD8139AEFV Datasheet

High-precision Gamma Correction

No Preview Available !

BD8132FV, BD8139AEFV
Technical Note
Electrical Characteristics
BD8132FV(Unless otherwise specified, Vcc = 15 V, DVcc = 3.3 V, Ta = 25)
Parameter
Symbol
Min.
Limit
Typ.
Unit
Max.
Condition
[REFIN]
Sinking current
Iref 25 50 75 µA REF = 10 V
[Gamma correction amp block]
Output current capacity
Io 150 300
— mA DAC = 3V, OUTx = 0 V
Load stability
V — 5 20 mV Io = +10 mA to -10 mA, OUTx = 6 V
Slew rate
SR — 3.5 — V/µS Ro = 100 k, Co = 100 pF *
OUT max. output voltage
VOH VCC-0.16 VCC-0.1 —
V Io = -5 mA
OUT min. output voltage
VOL
0.15 0.24 V Io = 5 mA
[Common amp block]
Input bias current
Ib —
0
1 µA VFB = 6 V
Output current capacity
Io 150 300
— mA DAC = 3V, OUTx = 0 V
Load stability
V — 5 20 mV Io = +10 mA to -10 mA, OUTx = 3 V
Slew rate
SR — 3.5 — V/µS Ro = 100 k, Co = 100 pF *
Input voltage range
VFB 0
— VDAC V Ro = 100 k, Co = 100 pF *
OUT max. output voltage
VOH VCC-0.16 VCC-0.1 —
V Io = -5 mA
OUT min. output voltage
VOL
0.15 0.24 V Io = 5 mA
[DAC]
Resolution
Res — 10 — Bit
Nonlinearity error
LE -2 — 2 LSB Ideal line error: 00A to 3F5
Differential linearity error
DLE -2 — 2 LSB 1 LSB ideal increase error: 00A to 3F5
[OSC]
Oscillating frequency
fosc — 80 — kHz Internal frequency mode
[Control signals]
Sinking current
Ictl — 16 25 µA
Threshold voltage
VTH
0.7
2.6 V DVCC = 3.3 V
Reset time
trst — 45 — µs CCT = 1000 pF
[Overall]
Total supply current
Icc — 20 — mA When all output voltages are set to 5 V.
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
2/20
2009.07 - Rev.B


Part Number BD8139AEFV
Description High-precision Gamma Correction
Maker Rohm
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