SA5224 Datasheet, PDF (2/10 Pages) NXP Semiconductors – FDDI fiber optic postamplifier

Philips Semiconductors
FDDI fiber optic postamplifier
Product specification
SA5224
DESCRIPTION
The SA5224 is a high-gain limiting amplifier that is designed to
process signals from fiber optic preamplifiers. Capable of operating
at 125Mb/s, the chip is FDDI compatible and has input signal
level-detection with a user-adjustable threshold. The DATA and
LEVEL-DETECT outputs are differential for optimum noise margin
and ease of use. Also available is the SA5225 which is an ECL 10K
version of the SA5224.
FEATURES
• Wideband operation: 1.0kHz to 120MHz typical
• Applicable in 155Mb/s OC3/SONET receivers
• Operation with single +5V or –5.2V supply
• Differential 100k ECL outputs
• Programmable input signal level-detection
• Fully differential for excellent PSRR to 1GHz
ORDERING INFORMATION
DESCRIPTION
16-Pin Plastic Small Outline (SO) package
PIN DESCRIPTION
D Package
CAZN ¹
CAZP ²
GND_A ³
D_IN ⁴
D_IN ⁵
V_CCA ⁶
CF 7
JAM 8
16 V_SET
15 V_REF
14 _VCCE
13 D_OUT
12 _DOUT
11 _GNDE
10 ST
9 ST
SD00374
Figure 1. Pin Configuration
APPLICATIONS
• FDDI
• Data communication in noisy industrial environments
• LANs
TEMPERATURE RANGE
–40 to +85°C
ORDER CODE
SA5224D
DWG #
SOT109-1
BLOCK DIAGRAM
V_CCA
(6)
C_AZP C_AZN
(2) (1)
V_CCE
(16)
D_IN (4)
D_IN ⁽⁵⁾
V_REF(15)
V_SET ⁽¹⁶⁾
LIMITING
AMPLIFIER
ECL
BUFFER
JAM
BUFFER
REFERENCE
LEVEL
DETECTOR
SD
BUFFER
(13) D_OUT
(12) _DOUT
(8) JAM
(9) ST
(10) ST
(3)
GND_A
(7)
C_F
Figure 2. Block Diagram
(11)
GND_E
SD00375
1998 Oct 07
2
853-1594 20141