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參數(shù)資料
型號(hào)： BUF20820AIDCPR
廠商： Texas Instruments
文件頁數(shù)： 23/29頁
文件大?。?/td> 0K
描述： IC 18CH PROG V-REF GEN 38-HTSSOP
標(biāo)準(zhǔn)包裝： 1
應(yīng)用： TFT-LCD 面板：伽瑪緩沖器，VCOM 驅(qū)動(dòng)器
輸出類型： 滿擺幅
電路數(shù)： 18
電流 - 電源： 18mA
電流 - 輸出 / 通道： 100mA
電壓 - 電源，單路/雙路(±)： 7 V ~ 18 V
安裝類型： 表面貼裝
封裝/外殼： 38-TFSOP （0.173"，4.40mm 寬）裸露焊盤
供應(yīng)商設(shè)備封裝： 38-HTSSOP
包裝： 標(biāo)準(zhǔn)包裝
其它名稱： 296-19400-6
BUF20820
SBOS330E DECEMBER 2005 REVISED OCTOBER 2008
www.ti.com
3
ELECTRICAL CHARACTERISTICS
Boldface limits apply over the specified temperature range, TA = 40°C to +85°C.
At TA = +25°C, VS = 18V, VSD = 5V, VREFH = 17V, VREFL = 1V, RL = 1.5k connected to ground, and CL = 200pF, unless otherwise noted.
BUF20820
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
ANALOG
Gamma Output Swing—High
OUT19, REFH OUT, Sourcing 10mA, VREFH = 17.8V, Code 1023
17.7
17.8
V
OUT1018, REFL OUT, Sourcing 10mA, VREFH = 17.8V, Code 1023
17.0
17.2
V
Gamma Output Swing—Low
OUT19, REFH OUT, Sinking 10mA, VREFL = 0.2V, Code 00
0.6
1.0
V
OUT1018, REFL OUT, Sinking 10mA, VREFL = 0.2V, Code 00
0.2
0.3
V
VCOM Buffer Output Swing—High
VCOM, Sourcing 100mA, VREFH = 17.8V
13
15.5
V
VCOM Buffer Output Swing—Low
VCOM, Sinking 100mA, VREFL = 0.2V
1
2.0
V
Output Current
See Typical Characteristics Curve
REFH Input Range(1)
4
VS
V
REFL Input Range(1)
GND
VS 4
V
Integral Nonlinearity
INL
No Load, VREFH = 17V, VREFL = 1V
0.3
1.5
Bits
Differential Nonlinearity
DNL
No Load, VREFH = 17V, VREFL = 1V
0.3
1
Bits
Gain Error
0.12
%
Program to Out Delay
tD
5
s
Output Accuracy
No Load, VREFH = 17V, VREFL = 1V
±20
±50
mV
over Temperature
±25
mV
Input Resistance at VREFH and VREFL
RINH
100
M
Load Regulation, All References
REG
VOUT = VS/2, IOUT = +5mA to 5mA Step
0.5
1.5
mV/mA
40mA, All Channels
VOUT = VS/2, ISINKING = 40mA, ISOURCING = 40mA
0.5
1.5
mV/mA
ANALOG POWER SUPPLY
Operating Range(2)
VS
7
18
V
Total Analog Supply Current
IS
No Load
18
28
mA
over Temperature
28
mA
DIGITAL
Logic 1 Input Voltage
VIH
0.7
× VSD
V
Logic 0 Input Voltage
VIL
0.3
× VSD
V
Logic 0 Output Voltage
VOL
ISINK = 3mA
0.15
0.4
V
Input Leakage
±0.01
±10
A
Clock Frequency
fCLK
Standard/Fast Mode
400
kHz
High-Speed Mode
3.4
MHz
DIGITAL POWER SUPPLY
Operating Voltage Range
VSD
2.0
5.5
V
Digital Supply Current(3)
ISD
No-Load, Two-Wire Bus Inactive
25
50
A
over Temperature
100
A
TEMPERATURE
Specified Temperature Range
40
+85
°C
Operating Temperature Range
Junction Temperature < +125
°C
40
+95
°C
Storage Temperature Range
65
+150
°C
Thermal Resistance, HTSSOP-38
Junction-to-Ambient
qJA
30
°C/W
Junction-to-Case
qJC
15
°C/W
(1) See Applications Information section REFH and REFL Input Range.
(2) Minimum analog supply voltage is 8.5V when programming OTP memory.
(3) See typical characteristic curve, Digital Supply Current vs Two-Wire Bus Activity.
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