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.
RF I/P+
RF I/P–
N/C
N/C
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
V
3
EE
EE
GND
GND
4
V
V
5
EE
EE
GND
GND
6
V
V
7
EE
EE
FEATURES
GND
RF O/P GND
RF O/P–
8
VIDEO V
EE
9
■ 75dB Dynamic Range
GAIN ADJUST
TRIM REF
RF O/P+
10
11
12
13
14
■ Surface Mount SO Package
■ Adjustable Log Slope and Offset
■ 0dBm RF Limiting Output
■ 60dBm Limiting Range
RF O/P V
EE
EE
OFFSET ADJ
VIDEO GND
VIDEO O/P V
VIDEO O/P
VIDEO V
CC
VIDEO O/P V
CC
■ 2V Video Output Range
■ Low Power (Typ. 1W)
■ Temperature Range (TCASE): -55°C to +125°C
MC28
Fig.1 Pin connections - top view
ORDERING INFORMATION
APPLICATIONS
SL3522 A MC (Miniature Ceramic package)
SL3522 C MC (Miniature Ceramic package)
SL3522 NA 1C (Probe-tested bare die)
■ Ultra Wideband Log Receivers
■ Channelised and Monpulse Radar
■ Instrumentation
(Also available: SL3522 AA MC screened to Mitel HI-REL
level A. Contact Mitel Semiconductor sales outlet for a
separate datasheet.)
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
±6.0V
-65°C to +175°C
+175°C
ESD PROTECTION
Storage temperature
Junction temperature
Thermal resistance
Die-to-case
Die-to-ambient
Applied DC voltage to RF input
Applied RF power to RF input
To achieve the high frequency performance there are no
ESDprotectionstructuresontheRFinputpins(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.
15.5°C/W
76.5°C/W
±400mV
+15dBm
RF
O/P+
RF
O/P–
O/P
V
CC
RF
I/P –
27
28
9
10 14
O/P
GND
RF
I/P +
16
13
12
VIDEO
OUT
O/P
V
EE
VIDEO GAIN
AND OFFSET
ADJUST
VIDEO
V
CC
15
19
18
17
GAIN
ADJ
OFFSET
ADJ
3, 5, 7, 20, 22, 24, 26 V
4, 6, 8, 21, 23, 25 GND
EE
R
R
O
R
T
G
Fig.2 Functional block diagram