参数资料
| 型号： | BD8132FV-E2 |
| 厂商： | Rohm Semiconductor |
| 文件页数： | 11/23页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUP CORRECTION SSOP-B40 |
| 标准包装： | 2,000 |
| 系列： | * |
BD8132FV, BD8139AEFV
● Timing standard values
Technical Note
Parameter
Latch setup time
SDIN setup time
RW setup time
MEMDI setup time
Clock high time
Clock low time
Latch hold time
RW hold time
LATCH high time
RW high time
MEMDO delay time
CS delay time
Symbol
tLC
tSC
tRC
tDIC
tWH
tWL
tCL
tCR
tLA
tRW
tCDO
tCCS
Min.
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.6
0.6
—
—
Limit
Typ.
—
—
—
—
—
—
—
—
—
—
—
—
Max.
—
—
—
—
—
—
—
—
—
—
0.1
0.1
Unit
μs
μs
μs
μs
μs
μs
μs
μs
μs
μs
μs
μs
● Gamma correction output setting (BD8132FV and BD8139AEFV)
Equation (1) describes the relationship between the gamma correction output voltage (V0 to VH) and the DAC setting.
Output voltage (V0 to VH) = [(DAC setting + 1) / 1,024] ? (REFIN / 2) ? 2 (1)
The Vcom voltage can be set by attaching resistor R1 between the Vcom and FB pins and resistor R2 between the FB and
GND pins.Equation (2) describes the relationship between the Vcom voltage and the DAC setting when using these resistors.
Output voltage (Vcom) = [(DAC setting + 1) / 1,024] ? (REFIN / 2) ? (R1 + R2) / R2 (2)
DAC
Vcom
R1
FB
R2
Fig. 27 Vcom Voltage Setting Circuit Diagram
● Power supply sequence
Activate the digital power supply DV CC before the V CC power supply to prevent IC malfunctions due to undefined logic in the digital
circuit. Input serial data after canceling the power-on reset. When turning off the IC's power supplies, turn off V CC and then DV CC.
V CC
???
tVcc
???
tVD
REFIN
DV CC
LATCH
CLK
SDIN
tDS
???
???
???
???
???
tSV
tVR
???
???
???
???
???
tRV
Fig. 28 Power Supply Sequence Diagram
● Power supply sequence standard values
Parameter
Serial input timing
VCC activation timing
REFIN activation timing
REFIN off timing
Power supply off timing
V CC startup timing
Symbol
tDS
tSV
tVR
tRV
tVD
tVCC
Min.
100
0
0
0
0
1
Limit
Typ.
—
10
10
10
10
—
Max.
—
—
—
—
—
—
Unit
μs
μs
μs
μs
μs
ms
Condition
Cct = 1000 pF
www.rohm.com
? 2009 ROHM Co., Ltd. All rights reserved.
11/20
2009.07 - Rev.B
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BD8138EFV | 制造商:ROHM 制造商全称:Rohm 功能描述:y-correction IC for TFT-LCD Panel |
| BD8139AEFV | 制造商:ROHM 制造商全称:Rohm 功能描述:High-precision Gamma Correction ICs with built-in DAC |
| BD8139AEFV-E2 | 功能描述:IC GAMMA CORRECTION 40SSOP 制造商:rohm semiconductor 系列:- 包装:剪切带（CT） 零件状态:有效 类型:TFT-LCD 稳压器 应用:视频 安装类型:表面贴装 封装/外壳:40-VSSOP（0.213"，5.40mm 宽）裸焊盘 供应商器件封装:40-HTSSOP-B 标准包装:1 |
| BD8139EFV | 制造商:ROHM 制造商全称:Rohm 功能描述:y-correction IC for TFT-LCD Panel |
| BD814 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:TRANSISTOR | BJT | PNP | 45V V(BR)CEO | 2A I(C) | TO-202 |
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