參數(shù)資料
型號(hào)： LT5514
廠(chǎng)商： Linear Technology Corporation
元件分類(lèi)： ADC
英文描述： Ultralow Distortion IF Amplifier/ADC Driver with Digitally Controlled Gain
中文描述： 超低失真IF放大器/ ADC的數(shù)字控制增益驅(qū)動(dòng)
文件頁(yè)數(shù)： 4/20頁(yè)
文件大?。?/td> 275K
代理商： LT5514
4
LT5514
5514f
(Standard Mode)
V
CC
= 5V, V
CCO
= 5V, ENA = ENB = 3V, T
A
= 25
°
C, R
OUT
= 200
. Maximum gain specifications are with respect to differential inputs
and differential outputs, unless otherwise noted. (Note 7) (Test circuits shown in Figures 9 and 10)
AC ELECTRICAL CHARACTERISTICS
SYMBOL
Dynamic Performance
BW
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Large-Signal –3dB Bandwidth
All Gain Settings (Note 8)
R
OUT
= 100
R
OUT
= 200
; L1, L2 = 33nH (Figure 9)
All Gain Settings, Single Tone, R
OUT
= 150
f
IN
= 100MHz (Note 10)
Max Gain, f
IN
= 100MHz
PGA1 = Low, f
IN
= 100MHz
f
IN
= 100MHz (Note 9)
f
IN
= 400MHz (Note 9)
All Gain Settings, 10% to 90%, R
OUT
= 100
All Gain Settings, R
OUT
= 100
30MHz to 300MHz Frequency Range,
R
OUT
= 100
LF to 850
LF to 500
21
MHz
MHz
dBm
P
OUT(MAX)
Clipping Limited Maximum Sinusoidal
Output Power
Amplifier Transconductance
g
m
0.30
0.21
–92
–78
500
800
±
50
S
S
S12
Reverse Isolation
dB
dB
ps
ps
ps
t
r
, t
f
Step Response Rise and Fall Time
Group Delay
Group Delay Variation
PGA Settling Time
Enable/Disable Time
500
600
ns
ns
Distortion and Noise
OIP3
Output Third Order Intercept Point for
PGA0 = High (PGA1, PGA2, PGA3 Any State)
P
OUT
= 9dBm (Each Tone), 200kHz Tone Spacing
f
IN
= 100MHz
f
IN
= 200MHz
P
OUT
= 9dBm (Each Tone), 200kHz Tone Spacing
f
IN
= 100MHz
f
IN
= 200MHz
P
OUT
= 11dBm (Single Tone), f
IN
= 50MHz
P
OUT
= 11dBm (Single Tone), f
IN
= 50MHz
PGA1 = High, f
IN
= 100MHz
PGA1 = Low, f
IN
= 100MHz
Max Gain, f
IN
= 100MHz
–3dB Step, f
IN
= 100MHz
+47.0
+40.5
dBm
dBm
Output Third Order Intercept Point for
PGA0 = Low (PGA1, PGA2, PGA3 Any State)
+42.0
+37.5
–82
–72
–134
–136
7.4
7.7
dBm
dBm
dBc
dBc
HD2
HD3
N
FLOOR
Second Harmonic Distortion
Third Harmonic Distortion
Output Noise Floor
(PGAO, PGA2, PGA3 Any State)
Noise Figure
dBm/Hz
dBm/Hz
NF
dB
dB
Amplifier Power Gain and Gain Step
G
MAX
Maximum Gain
G
MIN
Minimum Gain
G
STEP
Gain Step Size
Gain Step Accuracy
Amplifier I/O Impedance (Parallel Values Specified Differentially)
R
IN
Input Resistance
C
IN
Input Capacitance
R
O
Output Resistance
C
O
Output Capacitance
f
IN
= 20MHz and 200MHz
f
IN
= 20MHz and 200MHz
f
IN
= 20MHz and 200MHz
f
IN
= 20MHz and 200MHz
33
10.5
1.5
±
0.1
dB
dB
dB
dB
1.05
1.95
f
IN
= 100MHz
f
IN
= 100MHz
f
IN
= 100MHz
f
IN
= 100MHz
108
2.8
3.4
1.9
pF
k
pF
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