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參數(shù)資料
型號(hào)： LT5554IUH#PBF
廠商： Linear Technology
文件頁數(shù)： 29/32頁
文件大小： 0K
描述： IC VGA DIG CONTROL 32-QFN
標(biāo)準(zhǔn)包裝： 73
應(yīng)用： 可變?cè)鲆妫╒GA）
電路數(shù)： 1
-3db帶寬： 1GHz
電流 - 電源： 200mA
電壓 - 電源，單路/雙路(±)： 4.75 V ~ 5.25 V
安裝類型： 表面貼裝
封裝/外殼： 32-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 32-QFN 裸露焊盤（5x5）
包裝： 管件
產(chǎn)品目錄頁面： 1322 (CN2011-ZH PDF)
LT5554
6
5554f
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
DEC External Capacitor Charge/Discharge CURRENT
IIH(DEC)
DEC Pin Source Current
VDEC = 4V
27
50
70
mA
IIL(DEC)
DEC Pin Sink Current
VDEC = 1.8V
–70
–38
–14
mA
Mode Input Three-State DC Characteristics
VIL(MODE)
MODE Input LOW Voltage for AC-Couple
PGx AC-Coupled, STROBE AC-Coupled
0
0.6
V
VOPEN(MODE)
MODE Input OPEN
PGx AC-Coupled, STROBE DC-Coupled
1.7
OPEN
2.3
V
VIH(MODE)
MODE Input HIGH Voltage
PGx DC-Coupled, STROBE DC-Coupled
VCC – 0.4
VCC
V
IIL(MODE)
MODE Input Current
VMODE = 0V
–42
–31
–23
μA
IIH(MODE)
MODE Input Current
VMODE = 5V
43
72
100
μA
PGx (MODE = VCC) and STROBE (MODE = OPEN or MODE = VCC) INPUTS for DC-Coupled
VIL
Input LOW Voltage
0.6
V
VIH
Input HIGH Voltage
2.2
V
IIL(DC)
Input Current
VIN = 0.6V
30
μA
IIH(DC)
Input Current
VIN = 5V
125
170
220
μA
PGx (MODE = 0V or MODE = OPEN) and STROBE (MODE = 0V) INPUTS for AC-Coupled
VIN(AC)
Input Pulse Range
Instantaneous Input Voltage
0
4.6
V
VIN(AC)P-P
Input Pulse Amplitude
Rise and Fall Time <5ns
Rise and Fall Time >80ns
600
300
mVP-P
VIN(AC)MAX
Maximum Input Noise Amplitude
No LT5554 Gain Update
100
mVP-P
IIL(AC)
Input Current
VIN = 0V
–210
–155
–100
μA
IIH(AC)
Input Current
VIN = 5V
310
420
530
μA
Amplier DC Characteristics
VIN(DEC)
DEC
GMAX
1.85
2
2.25
V
VIN(BIAS)
IN+, IN– Bias Voltage
GMAX
1.8
2.04
2.2
V
RIN
INPUT Differential Resistance
GMAX
GMIN
48
50
Ω
GM
Amplier Transconductance
GMAX
0.15
S
IODC
OUT+, OUT– Quiescent Current
VOUT = 5V
33
47
57
mA
IOUT(OFFSET)
Output Current Mismatch
IN+, IN– Open
200
μA
ICC
VCC Supply Current
GMAX, MODE = 0V
GMIN, MODE = 0V
GMAX, MODE = 5V
GMIN, MODE = 5V
78
77
75
110
109
106
132
131
127
mA
ICC(TOTAL)
Total Supply Current
ICC + 2 IODC (GMAX)
200
mA
DC ELECTRICAL CHARACTERISTICS Specications are at T
A = 25°C. VCC = 5V, VCCO = 5V, ENB = 3V,
MODE = 5V, unless otherwise noted. (Note 3) (Test circuit shown in Figure 16), unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All voltage values are with respect to GND ground.
Note 3: RS = RIN = 50Ω Input matching is assumed. PIN is the available
input power. POUT is the power into ROUT. ROUT = RO || RLOAD is the total
output resistance at amplier open-collectors outputs (used in GV, GP gain
calculation). RO = 400Ω is LT5554 internal output impedance. RLOAD is
load resistance as seen at OUT+, OUT– pins.
All dBm gures are with respect to 50Ω. Specications refer to differential
inputs and differential outputs.
Note 4: An external power supply equal to VCCO is used for choke
inductors or center-tap transformer output interfaces. Whenever OUT+,
OUT– pins are biased via resistors, the voltage drop produced by the DC-
output current (IODC = 45mA typical) may require a larger output external
power supply. However, care must be taken not to exceed the OUT+,
OUT– absolute maximum rating when the LT5554 is disabled.
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