LT5568-2EUF-PBF LINER [Linear Technology], LT5568-2EUF-PBF Datasheet - Page 6

• Manufacturer Part Number: LT5568-2EUF-PBF
• Description: GSM/EDGE Optimized, High Linearity Direct Quadrature Modulator
• Manufacturer: LINER [Linear Technology]

LT5568-2
TYPICAL PERFOR A CE CHARACTERISTICS
P
sideband selection). P
6
LO
–40
–50
–60
–70
–40
–42
–10
–20
–30
–80
–36
–38
–44
10
I AND Q BASEBAND VOLTAGE (V
IM2 = POWER AT f
IM3 = MAX POWER AT f
= 0dBm. BBPI, BBMI, BBPQ, BBMQ inputs 0.54V
0
0.1
0
RF Two-Tone Power (Each Tone),
IM2 and IM3 vs Baseband Voltage
and Supply Voltage
LO Feedthrough to RF Output
vs CW Baseband Voltage
I AND Q BASEBAND VOLTAGE (V
1
5V, –40°C
5V, 25°C
5V, 85°C
4.5V, 25°C
5.5V, 25°C
4.5V
5V, 5.5V
LO
2
+ 4.1MHz
IM3
f
f
LO
RF
BBI
BBQ
RF, OUT
1
+ 1.9MHz OR f
40
35
30
25
20
15
10
IM2
= 2MHz, 2.1MHz, 0°
< –54
= 2MHz, 2.1MHz, 90°
5
0
4.5V
3
LO Leakage Distribution
P–P, DIFF, EACH TONE
5.5V
4.5V
= –10dBm (–10dBm/tone for 2-tone measurements), unless otherwise noted. (Note 3)
–40°C
25°C
85°C
5V, 5.5V
5V
–50
4
W
P-P,DIFF
LO
55682 G19
+ 2.2MHz
LO LEAKAGE (dBm)
–46
)
5
U
10
)
–42
–45
–50
–55
–38
25
20
15
10
5
0
0
–9
Gain Distribution
Image Rejection
vs CW Baseband Voltage
f
BB
DC
–34
I AND Q BASEBAND VOLTAGE (V
= 100kHz
–8.5
–40°C
25°C
85°C
, Baseband Input Frequency f
0.5
5V, –40°C
5V, 25°C
5V, 85°C
55682 G25
–30
–8
1
–7.5
GAIN (dB)
1.5
–7
4.5V, 25°C
5.5V, 25°C
2
–6.5
P-P,DIFF
2.5
–6
25
10
20
15
55682 G20
55682 G23
5
0
< –70
)
Image Rejection Distribution
–5.5
V
BB
3
CC
–40°C
25°C
85°C
= 2MHz, I&Q 90° shifted. f
= 5V, EN = High, T
–66
IMAGE REJECTION (dBc)
–40
–50
–60
–70
–10
–20
–30
–80
10
35
30
25
20
15
10
–62
I AND Q BASEBAND VOLTAGE (V
5
0
0
–160.4
0.1
IM2 = POWER AT f
IM3 = MAX POWER AT f
RF Two-Tone Power (Each Tone),
IM2 and IM3 vs Baseband Voltage
and Temperature
Noise Floor Distribution
–58
–40°C
25°C
85°C
–160
–54
–40°C
25°C
NOISE FLOOR (dBm/Hz)
A
= 25°C, f
–50
IM3
LO
–159.6
RF
f
f
+ 4.1MHz
BBI
BBQ
25°C
–46
1
LO
RF
55682 G26
IM2
= 2MHz, 2.1MHz, 0°
–40°C
= 2MHz, 2.1MHz, 90°
–40°C
+ 1.9MHz OR f
85°C
= f
LO
P–P, DIFF, EACH TONE
–159.2
85°C
BB
= 900MHz,
85°C
+ f
25°C
LO
–158.8
LO
55682 G24
(upper
+ 2.2MHz
10
55682f
)