LT5512
3
5512fa
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: 45MHz, 140MHz and 450MHz performance measured on the test
circuit shown in Figure 1. 900MHz, 1900MHz and 2450MHz performance
measured on the test circuit shown in Figure 2.
AC ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Conversion Gain RF = 45MHz, IF = 2MHz
RF = 140MHz, IF = 10MHz
RF = 450MHz, IF = 70MHz
RF = 900MHz, IF = 170MHz
RF = 1900MHz, IF = 170MHz
RF = 2450MHz, IF = 240MHz
–1
1
2
1.1
0
1
2
dB
dB
dB
dB
dB
dB
Conversion Gain vs Temperature T
A
= –40°C to 85°C, RF = 900MHz –0.011 dB/°C
Input 3rd Order Intercept RF = 45MHz, IF = 2MHz
RF = 140MHz, IF = 10MHz
RF = 450MHz, IF = 70MHz
RF = 900MHz, IF = 170MHz
RF = 1900MHz, IF = 170MHz
RF = 2450MHz, IF = 240MHz
20.4
20.7
21.3
21
17
13
dBm
dBm
dBm
dBm
dBm
dBm
Single-Sideband Noise Figure RF = 140MHz, IF = 10MHz
RF = 450MHz, IF = 70MHz
RF = 900MHz, IF = 170MHz
RF = 1900MHz, IF = 170MHz
RF = 2450MHz, IF = 240MHz
10.3
10.3
11
14
13.4
dB
dB
dB
dB
dB
LO to RF Leakage f
LO
= 250kHz to 700MHz (Figure 1)
f
LO
= 700MHz to 2500MHz (Figure 2)
≤–63
≤–50
dBm
dBm
LO to IF Leakage f
LO
= 250kHz to 500MHz (Figure 1)
f
LO
= 500MHz to 1250MHz (Figure 1)
f
LO
= 700MHz to 1500MHz (Figure 2)
f
LO
= 1500MHz to 1950MHz (Figure 2)
f
LO
= 1950MHz to 2500MHz (Figure 2)
≤–35
≤–40
≤–45
≤–40
≤–32
dBm
dBm
dBm
dBm
dBm
RF to LO Isolation f
RF
= 250kHz to 800MHz (Figure 1)
f
RF
= 700MHz to 1200MHz (Figure 2)
f
RF
= 1200MHz to 1700MHz (Figure 2)
f
RF
= 1700MHz to 2500MHz (Figure 2)
>61
>49
>46
>43
dB
dB
dB
dB
2RF-2LO Output Spurious Product
(f
RF
= f
LO
+ f
IF
/2)
900MHz: f
RF
= 815MHz at –12dBm, f
IF
= 170MHz
1900MHz: f
RF
= 1815MHz at –12dBm, f
IF
= 170MHz
–66
–59
dBc
dBc
3RF-3LO Output Spurious Product
(f
RF
= f
LO
+ f
IF
/3)
900MHz: f
RF
= 786.67MHz at –12dBm, f
IF
= 170MHz
1900MHz: f
RF
= 1786.67MHz at –12dBm, f
IF
= 170MHz
–83
–58
dBc
dBc
Input 1dB Compression RF = 10MHz to 500MHz (Figure 1)
RF = 900MHz (Figure 2)
RF = 1900MHz (Figure 2)
10.5
10.1
6.2
dBm
dBm
dBm
Note 3: Specifi cations over the –40°C to 85°C temperature range are
assured by design, characterization and correlation with statistical process
control.
Note 4: SSB Noise Figure measurements performed with a small-signal
noise source and bandpass fi lter on RF input and no other RF signal
applied.
Downmixer Applications: (Test Circuits Shown in Figures 1 and 2)
V
CC
= 5V, EN = High, T
A
= 25°C, P
RF
= –10dBm (–10dBm/tone for two-tone IIP3 tests, Δf = 200kHz), High-Side LO at –5dBm for 45MHz,
140MHz and 450MHz tests, Low-Side LO at –10dBm for 900MHz, 1900MHz and 2450MHz tests, unless otherwise noted.
(Note 2, 3 and 4)
