SA5217D NXP Semiconductors, SA5217D Datasheet - Page 2

• Manufacturer Part Number: SA5217D
• Manufacturer: NXP Semiconductors

Specifications of SA5217D

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
DESCRIPTION
The SA5217 is a 75MHz postamplifier system designed to accept
low level high-speed signals. These signals are converted into a
TTL level at the output. The SA5217 can be DC coupled with the
previous transimpedance stage using SA5210, SA5211 or SA5212A
transimpedance amplifiers. The main difference between the
SA5217 and the SA5214 is that the SA5217 does not make the
output of A1 and input of A2 accessible; instead, it brings out the
output of A2 and the input of A8 thus activating the on-chip Schmitt
trigger function by connecting two external capacitors. The result is
that a much longer string of 1s and 0s, in the bit stream, can be
tolerated. This ”system on a chip” features an auto-zeroed first
stage with noise shaping, a symmetrical limiting second stage, and a
matched rise/fall time TTL output buffer. The system is
user-configurable to provide adjustable input threshold and
hysteresis. The threshold capability allows the user to maximize
signal-to-noise ratio, thereby insuring a low Bit Error Rate (BER).
An auto-zero loop can be used to replace two input coupling
capacitors with a single Auto Zero (AZ) capacitor. A signal absent
flag indicates when signals are below threshold. The low signal
condition forces the TTL output to the last logic state. User
interaction with this ”jamming” system is available. The SA5217 is
packaged in a standard 20-pin surface-mount package and typically
consumes 40mA from a standard 5V supply. The SA5217 is
designed as a companion to the SA5211/5212A and SA5210
transimpedance amplifiers. These differential preamplifiers may be
directly coupled to the postamplifier inputs. The SA5210/5217,
SA5211/5217 or SA5212A/5217 combinations convert nanoamps of
photodetector current into standard digital TTL levels.
APPLICATIONS
ORDERING INFORMATION
ABSOLUTE MAXIMUM RATINGS
1998 Oct 07
20-Pin Plastic Small Outline Large (SOL) Package
Fiber optics
Communication links in Industrial and/or Telecom environment
with high EMI/RFI
Local Area Networks (LAN)
Synchronous Optical Networks (SONET) STS-1
RF limiter
Good for 2 23 -1 pseudo random bit stream
Postamplifier with link status indicator
SYMBOL
V
V
T
P
V
CCD
T
CCA
T
STG
A
IJ
J
D
Power supply
Power supply
Operating ambient temperature range
Operating junction temperature range
Storage temperature range
Power dissipation
Jam input voltage
DESCRIPTION
PARAMETER
2
PIN CONFIGURATION
FEATURES
TEMPERATURE RANGE
Postamp for the SA5211/5212A. SA5210 preamplifier family
Wideband operation: typical 75MHz (150MBaud NRZ)
Interstage filtering/equalization possible
Single 5V supply
Low signal flag
Output disable
Link status threshold and hysteresis programmable
LED driver (normally ON with above threshold signal)
Fully differential for excellent PSRR
Auto-zero loop for DC offset cancellation
2kV ElectroStatic Discharge (ESD) protection
NOTE:
1. SOL - Released in large SO package only.
-40 to +85 C
C
THRESH
PKDET
GND
V
V
GND
V
FLAG
CCD
CCA
OUT
LED
JAM
Figure 1. Pin Configuration
A
D
10
1
2
3
4
5
6
7
8
9
D
1
Package
-55 to +150
-65 to +150
-40 to +85
-0.5 to 5.5
ORDER CODE
SA5214
1.4
+6
+6
SA5217D
20
19
18
17
16
15
14
13
12
11
Product specification
SD00354
IN
IN
C
C
OUT
IN
OUT
IN
R
R
AZP
AZN
HYST
PKDET
1B
1A
8B
8A
2B
2A
853-1658 20141
SA5217
SOT163-1
DWG #
UNIT
W
V
V
V
C
C
C