lt5524 Linear Technology Corporation, lt5524 Datasheet - Page 4

• Manufacturer Part Number: lt5524
• Description: Low Distortion If Amplifier/adc Driver With Digitally Controlled Gain
• Manufacturer: Linear Technology Corporation

AC ELECTRICAL CHARACTERISTICS
LT5524
specifications are with respect to differential inputs and differential outputs, unless otherwise noted.
(Note 7) (Test circuits shown in Figures 9 and 10)
SYMBOL
Dynamic Performance
BW
V
P
g
S12
Distortion and Noise
OIP3
HD2
HD3
N
NF
Amplifier Power Gain and Gain Step
G
G
G
Amplifier I/O Impedance (Parallel Values, Specified Differentially)
R
C
R
C
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: All voltage values are with respect to ground.
Note 3: Default state for open PGA inputs.
Note 4: V
Note 5: External V
mode voltage is as specified when resistors are used. For choke inductors
or transformer, V
Note 6: Internally generated common mode input bias voltage requires
capacitive or transformer coupling to the signal source.
Note 7: Specifications over the –40°C to 85°C operating temperature
range are assured by design, characterization and correlation with
statistical process controls. Gain always refers to power gain. Input
4
m
OUT(CLIP)
OUT(MAX)
IN
O
FLOOR
MAX
MIN
STEP
IN
O
CC1
PARAMETER
Large-Signal –3dB Bandwidth
Output Voltage Clipping Levels
Clipping Limited Maximum Sinusoidal
Output Power
Amplifier Transconductance
Reverse Isolation
Output Third Order Intercept Point for
PGA0 = High (PGA1, PGA2, PGA3 Any State)
Output Third Order Intercept Point for
PGA0 = Low (PGA1, PGA2, PGA3 Any State)
Second Harmonic Distortion
Third Harmonic Distortion
Output Noise Floor
(PGAO, PGA2, PGA3 Any State)
Noise Figure
PGA Settling Time
Enable/Disable Time
Maximum Gain
Minimum Gain
Gain Step Size
Gain Step Accuracy
Input Resistance
Input Capacitance
Output Resistance
Output Capacitance
and V
OSUP
OSUP
CC2
= V
(Pins 2 and 19) are internally connected.
is adjusted such that V
CCO
= 5V typ.
CCO
output pin common
CONDITIONS
All Gain Settings (Note 8), R
Each OUT
(Note 11)
All Gain Settings, Single Tone,
f
Max Gain, f
f
P
f
P
f
P
P
PGA1 = High, f
PGA1 = Low, f
Max Gain Setting, f
Output Settles within 10% of Final Value
Output Settles within 10% of Final Value
f
f
f
f
f
f
f
f
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
OUT
OUT
OUT
OUT
= 100MHz (Note 10)
= 100MHz (Note 9)
= 100MHz
= 100MHz
= 20MHz and 200MHz
= 20MHz and 200MHz
= 20MHz and 200MHz
= 20MHz and 200MHz
= 100MHz
= 100MHz
= 100MHz
= 100MHz
= 4dBm (Each Tone), 200kHz Tone Spacing,
= 4dBm (Each Tone), 200kHz Tone Spacing,
= 5dBm (Single Tone), f
= 5dBm (Single Tone), f
+
, OUT
IN
V
CC
= 100MHz
IN
IN
–
= 5V, V
= 100MHz
= 100MHz
with Respect to Ground
IN
matching is assumed. P
into the external load, R
dBm figures are with respect to 50Ω.
Note 8: High frequency operation is limited by the RC time constants at
the input and output ports. The low frequency (LF) roll-off is set by I/O
interface choice.
Note 9: Limited by package and board isolation.
Note 10: See “Clipping Free Operation” in the Applications Information
section. Refer to Figure 7.
Note 11: Although the instantaneous AC voltage on the OUT
may in some situations safely exceed 8V (with respect to ground), in no
case should the DC voltage on these pins be allowed to exceed the
ABSMAX tested limit of 7V.
= 100MHz
CCO
OUT
IN
IN
= 5V, EN = 3V, T
= 50MHz
= 50MHz
= 100Ω
OUT
IN
is the available input power. P
, as seen by the LT5524 differential outputs. All
A
= 25°C, R
MIN
0.8
2
OUT
LF to 540
–138
–140
0.15
±0.2
TYP
–92
+40
+36
–76
–72
500
600
122
= 200Ω. Maximum gain
8.6
4.5
1.5
1.7
16
27
2
5
OUT
MAX
2.2
8
+
is the power
or OUT
dBm/Hz
dBm/Hz
UNITS
–
dBm
dBm
dBm
pins
MHz
5524f
dBc
dBc
kΩ
dB
dB
dB
dB
dB
dB
ns
ns
pF
pF
Ω
V
S