SL3522
500MHz 75dB Logarithmic/Limiting Amplifier
Advance Information
Supersedes edition in Professional Products IC Handbook May 1991
DS3534 - 2.0 April 1994
The SL3522 is a monolithic seven stage successive
detection logarithmic amplifier integrated circuit for use in the
100MHz to 500MHz frequency range. It features an on–chip
video amplifier with provision for external adjustment of log
Slope and offset. It also features a balanced RF output. The
SL3522 operates from supplies of
±5V.
N/C
N/C
V
EE
GND
V
EE
GND
V
EE
RF O/P GND
RF O/P–
RF O/P+
RF O/P V
EE
VIDEO O/P V
EE
VIDEO O/P
VIDEO O/P V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RF I/P+
RF I/P–
V
EE
GND
V
EE
GND
V
EE
GND
VIDEO V
EE
GAIN ADJUST
TRIM REF
OFFSET ADJ
VIDEO GND
VIDEO V
CC
FEATURES
s
75dB Dynamic Range
s
Surface Mount SO Package
s
Adjustable Log Slope and Offset
s
0dBm RF Limiting Output
s
60dBm Limiting Range
s
2V Video Output Range
s
Low Power (Typ. 1W)
s
Temperature Range (T
CASE
): -55°C to +125°C
APPLICATIONS
s
Ultra Wideband Log Receivers
s
Channelised and Monpulse Radar
s
Instrumentation
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
Storage temperature
Junction temperature
Thermal resistance
Die-to-case
Die-to-ambient
Applied DC voltage to RF input
Applied RF power to RF input
MC28
Fig.1 Pin connections - top view
ORDERING INFORMATION
SL3522 A MC (Miniature Ceramic package)
SL3522 C MC (Miniature Ceramic package)
SL3522 NA 1C (Probe-tested bare die)
(Also available: SL3522 AA MC screened to Mitel HI-REL
level A. Contact Mitel Semiconductor sales outlet for a
separate datasheet.)
±6.0V
-65°C to +175°C
+175°C
15.5°C/W
76.5°C/W
±400mV
+15dBm
ESD PROTECTION
To achieve the high frequency performance there are no
ESD protection structures on the RF input pins (27, 28). These
pins are
highly static sensitive,
typically measured as 250V
using MIL-STD-883 method 3015. Therefore, ESD handling
precautions are
essential
to avoid degradation of
performance or permanent damage to this device.
RF O/P
RF
O/P– O/P+ V
CC
RF
I/P –
RF
I/P +
27
9
10
14
O/P
GND
VIDEO
OUT
O/P
V
EE
VIDEO
V
CC
28
16
13
12
VIDEO GAIN
AND OFFSET
ADJUST
15
19
3, 5, 7, 20, 22, 24, 26 V
EE
4, 6, 8, 21, 23, 25 GND
GAIN
ADJ
18
R
G
17
R
T
R
O
OFFSET
ADJ
Fig.2 Functional block diagram
MITEL [ MITEL NETWORKS CORPORATION ]
