ltc1957-2 Linear Technology Corporation, ltc1957-2 Datasheet - Page 5

• Manufacturer Part Number: ltc1957-2
• Description: Single/dual Band Rf Power Controllers With 40db Dynamic Range
• Manufacturer: Linear Technology Corporation

BLOCK DIAGRA
68
33pF
2
5
10
GND
RF
V
0.02
CC
SHUTDOWN
THERMAL
–
+
BG1
60 A
CS
200
R
METAL
0.05
SENSE
150k
28pF
OPERATE SHDN
OFFSET
TRIM
W
V
IN
3
200
60 A
TSDB
35k
35k
SHDN
(LTC1957-2)
PROGRAMMABLE
1
OVERCURRENT
V
0.02
100
METAL
IN
GAIN
TRIM
+
–
COMPRESSION
RFDET
XMT AUTOZERO
Li-Ion
g
m
7
22k
TXEN
150k
900MHz
22k
AUTOZERO
6
RF PA
33k
22k
PCTL
33k
50mV
–
AZ
+
+
–
ICL
FILTER
DIPLEXER
+
–
50
150k
1.2V BANDGAP
CAMP
TXENB
TXENI
TSDB
BG1
4
LTC1957-1/LTC1957-2
ADJUSTABLE
BSEL
CONTROL
RF PA
MUX
C
VPC
C
1.2V
ADJUSTABLE
400 A
g
m
PB
PA
1.8GHz/1.9GHz
PA
PB
1.2V
100
100
140k
110k
12
12
V
V
PCA
PCB
1957 BD
9
8
5