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PDF SL2524NA Data sheet ( Hoja de datos )
| Número de pieza | SL2524NA | |
| Descripción | 1.3GHz Dual Wideband Logarithmic Amplifier | |
| Fabricantes | Mitel Networks Corporation | |
| Logotipo |  |
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SL2524
1.3GHz Dual Wideband Logarithmic Amplifier
DS4548 - 2.1 July 1995
The SL2524 is a pin compatible replacement for the
SL2521 and SL2522 series of log amplifiers, and exhibits a
superior stability performance. The amplifier is a successive
detection type which provides linear gain and accurate loga-
rithmic signal compression over a wide bandwidth. The two
stages can be operated independently.
When six stages (three SL2524s) are cascaded the strip
can be used for IFs between 30-650MHz whilst achieving
greater than 65dB dynamic range with a log accuracy of
<±1.0dB. The balanced limited output also offers accurate
phase information with input amplitude.
FEATURES
s 1.3GHz Bandwidth (-3dB)
s Balanced IF limiting
s 3ns Rise Times/5ns Fall Times (six stages)
s 20ns Pulse Handling (six stages)
s Temperature Stabilised
s Surface Mountable
APPLICATIONS
s Ultra Wideband Log Receivers
s Channelised Receivers
s Monopulse Applications
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC above VEE)
+7.0V
Storage temperature
-65°C to +150°C
Operating temperature range
SL2524/B/LC
-40°C to +85°C
SL2524/C/HP
-30°C to +85°C
Junction temperature - LC20
+175°C
- HP20
+150°C
Applied DC voltage to RF input ±0.4V (between RF I/P
pins)
Applied RF power to RF input
+15dBm
Value of RSET resistors
Thermal resistance:-
NOT less than 180Ω
Die to case -LC 20
28°C/W
- HP20
20°C/W
Die to ambient - LC20
73°C/W
- HP20
82°C/W
ORDERING INFORMATION
SL2524/B/LC (Ceramic leadless chip carrier package)
SL2524/C/HP (Plastic J lead chip carrier package)
SL2524/NA/1C (DC probe tested bare die)
5962 - 92315 (SMD)
OPTIONAL PIN
REFERENCE
PIN DESCRIPTION
PIN DESCRIPTION
1 SUB VEE
2 IF OUTPUT (A)
11 N/C
12 R SET (B)
3 IF OUTPUT (A)
13 DET. OUTPUT (B)
4 VEE (A)
5 OUTPUT VC (A)
6 IF INPUT (A)
14 VCC (B)
15 IF OUTPUT (B)
16 IF OUTPUT (B)
7 IF INPUT (A)
17 OUTPUT VCC (B)
8 V (A)
CC
18 VEE (B)
9 DET. OUTPUT (A) 19 IF INPUT (B)
10 R SET (A)
20 IF INPUT (B)
Fig.1 Pin connections top view
1 page  
GENERAL DESCRIPTION
The SL2524 is primarily intended for use in Radar and EW
receivers. Six stages (3 chip carriers) can be cascaded to form
a very wideband logarithmic ampifier offering >65dB of input
dynamic range, with pulse handling of better than 25ns. (See
figs 5 and 6.)
A six stange strip also offers balanced IF limiting, linearity
(log accuracy) of < ±1.0dB, temperature stabilisation and
programmable detector characteristics.
The detector has an external resistor set (RSET) pin which
allows the major characteristics of the detector to be
programmed. With six stage strip it is possible to vary the
value of RSET on each detector and so improve the overall log
error/linearity.
SL2524
The detector is full wave and good slew rates are achieved
with 2ns rise and 5ns fall times (no video filter). The video
bandwidth of a six stage strip is typically 600MHz (-3dB).
The amplifier also offers balanced IF limiting, low phase
shift versus input amplitude, and at an IF of 120MHz, less than
5° of phase change is achievable over the input level of
-55dBm to +5dBm.
The IF and Video ports can be used simultaneously, so
offering phase, frequency and pulse (video) information. A
slight loss of dynamic range (2dB) will be observed when the
IF ports are used in conjunction with the video.
Fig.4 Test circuit
Fig.5 Schematic diagram showing configuration of SD Log strip
5
5 Page 
Typical characteristics for a six stage strip as a low phase shift wideband limiter (Ref. figs 5 & 6)
SL2524
Fig.16 IF limiting characteristics at 60MHz and 500MHz (25°C)
Fig.17 IF limiting characteristic at 60MHz across temperature
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet SL2524NA.PDF ] | |
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