SA5214D,602 [NXP]
SA5214D;
| 型号： | SA5214D,602 |
| 厂家： | 
NXP |
| 描述： | SA5214D ATM 异步传输模式 电信 光电二极管 电信集成电路 |
| 文件： | 总10页 (文件大小：93K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
SA5214
Postamplifier with link status indicator
Product specification
1998 Oct 07
Replaces datasheet NE/SA5214 of 1995 Apr 26
IC19 Data Handbook
Philips
Semiconductors
Philips Semiconductors
Product specification
Postamplifier with link status indicator
SA5214
DESCRIPTION
PIN CONFIGURATION
The SA5214 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 SA5214 can be DC coupled with the
previous transimpedance stage using SA5210, SA5211 or SA5212
transimpedance amplifiers. 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 noise filtering, adjustable
input thresholds and hysteresis. The threshold capability allows the
user to maximize signal-to-noise ratio, insuring a low Bit Error Rate
(BER). An Auto-Zero loop can be used to minimize the number of
external coupling capacitors to one. A signal absent flag indicates
when signals are below threshold. Additionally, the low signal
condition forces the overall TTL output to a logical Low level. User
interaction with this “jamming” system is available. The SA5214 is
packaged in a standard 20-pin surface-mount package and typically
consumes 42mA from a standard 5V supply. The SA5214 is
designed as a companion to the SA5211/5212 transimpedance
amplifiers. These differential preamplifiers may be directly coupled
to the post-amplifier inputs. The SA5212/5214 or SA5211/5214
combinations convert nanoamps of photodetector current into
standard digital TTL levels.
1
D Package
1
2
20
19
18
17
16
15
14
13
12
11
IN
LED
1B
C
IN
PKDET
1A
3
THRESH
C
C
AZP
AZN
4
GND
A
FLAG
JAM
5
OUT
IN
1B
6
2B
7
V
OUT
CCD
1A
8
V
IN
R
CCA
2A
9
GND
D
HYST
10
V
R
OUT
PKDET
TOP VIEW
NOTE:
1. SOL – Released in large SO package only.
SD00349
Figure 1. Pin Configuration
FEATURES
• Postamp for the SA5211/5212 preamplifier family
• Wideband operation: typical 75MHz (100MBaud NRZ)
• Interstage filtering/equalization possible
• Single 5V supply
APPLICATIONS
• Fiber optics
• Communication links in Industrial and/or Telecom environment
with high EMI/RFI
• Low signal flag
• Local Area Networks (LAN)
• Metropolitan Area Networks (MAN)
• Synchronous Optical Networks (SONET)
• RF limiter
• Low signal 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
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
20-Pin Plastic Small Outline Large (SOL) Package
-40°C to +85°C
SA5214D
SOT163-1
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
+6
UNIT
V
V
V
Power supply
Power supply
CCA
CCD
+6
V
T
Operating ambient temperature range
Operating junction temperature range
Storage temperature range
Power dissipation
-40 to +85
-55 to +150
-65 to +150
300
°C
°C
°C
mW
V
A
T
J
T
STG
P
D
IJ
V
Jam input voltage
-0.5 to 5.5
2
1998 Oct 07
853-1657 20142
Philips Semiconductors
Product specification
Postamplifier with link status indicator
SA5214
PIN DESCRIPTIONS
PIN SYMBOL
NO.
DESCRIPTION
1
LED
Output for the LED driver. Open collector output transistor with 125Ω series limiting resistor. An above threshold signal
turns this transistor ON.
2
C
Capacitor for the peak detector. The value of this capacitor determines the detector response time to the signal,
supplementing the internal 10pF capacitor.
PKDET
3
4
5
THRESH Peak detector threshold resistor. The value of this resistor determines the threshold level of the peak detector.
GND
Device analog ground pin.
A
FLAG
Peak detector digital output. When this output is LOW, there is data present above the threshold. This pin is normally
connected to the JAM pin and has a TTL fanout of two.
6
JAM
Input to inhibit data flow. Sending the pin HIGH forces TTL DATA OUT ON, Pin 10, LOW. This pin is normally connected
to the FLAG pin and is TTL-compatible.
7
8
V
V
Power supply pin for the digital portion of the chip.
CCD
Power supply pin for the analog portion of the chip.
Device digital ground pin.
CCA
9
GND
D
10
11
V
TTL output pin with a fanout of five.
OUT
R
Peak detector current resistor. The value of this resistor determines the amount of discharge current available to the
PKDET
peak detector capacitor, C
.
PKDET
12
R
Peak detector hysteresis resistor. The value of this resistor determines the amount of hysteresis in the peak detector.
HYST
13 IN
Non-inverting input to amplifier A2.
Non-inverting output of amplifier A1.
Inverting input to amplifier A2.
2A
14 OUT
1A
1B
15 IN
2B
16 OUT
Inverting output of amplifier A1.
17
C
Auto-Zero capacitor pin (Negative terminal). The value of this capacitor determines the low-end frequency response of
the preamp A1.
AZN
18
C
Auto-Zero capacitor pin (Positive terminal). The value of this capacitor determines the low-end frequency response of the
preamp A1.
AZP
19 IN
20 IN
Non-inverting input of the preamp A1.
Inverting input of the preamp A1.
1A
1B
BLOCK DIAGRAM
OUT
IN
1B 2B
V
V
CCD
7
CCA
8
OUT
IN
1A
2A
14 16 15 13
OUTPUT BUFFER
GATED AMP
20
19
IN
IN
1B
1A
10
A8
A1
A2
V
OUT
18
17
C
AZP
AZN
6
OUTPUT DISABLE
JAM
A6
C
PEAK DETECT
A3
5
1
11
FLAG
LED
A4
R
PKDET
A5
A7
LED DRIVER
HYSTERESIS
12
4
9
GND
3
2
THRESH
GND
C
R
HYST
A
D
PKDET
SD00350
Figure 2. Block Diagram
3
1998 Oct 07
Philips Semiconductors
Product specification
Postamplifier with link status indicator
SA5214
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
RATING
4.75 to 5.25
4.75 to 5.25
-40 to +85
-40 to +110
250
UNIT
V
V
CCA
V
CCD
Supply voltage
Power supply
V
T
A
Ambient temperature range
°C
T
J
Operating junction temperature range
Power dissipation
°C
P
D
mW
DC ELECTRICAL CHARACTERISTICS
Min and Max limits apply over the operating temperature range at V
=V
CCD
=+5.0V unless otherwise specified. Typical data applies at
CCA
V
CCA
=V =+5.0V and T =25°C.
CCD A
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
UNIT
mA
Min
Typ
Max
I
Analog supply current
30
41.2
CCA
CCD
Digital supply current
(TTL, Flag, LED)
I
10
3.4
3.8
30
13.5
3.70
4.50
mA
A1 input bias voltage
(+/- inputs)
V
V
3.08
3.10
V
V
I1
A1 output bias voltage
(+/- outputs)
O1
A1 DC gain
A
dB
V1
(without Auto-Zero)
A1
A1 PSRR (v
A1 CMRR
, V
CCD
)
V
CCA
=V =4.75 to 5.25V
CCD
60
60
dB
dB
PSRR
CCA
A1
CMRR
∆V =200mV
CM
A2 input bias voltage
(+/- inputs)
V
3.56
2.4
3.7
3.86
V
I2
V
V
High-level TTL output voltage
Low-level TTL output voltage
High-level TTL output current
Low-level TTL output current
Short-circuit TTL output current
Threshold bias voltage
I
=-200µA
3.4
0.3
V
V
OH
OH
I
=8mA
0.4
OL
OL
I
I
I
V
=2.4V
=0.4V
=0.0V
-40
-24.4
mA
mA
mA
V
OH
OUT
OUT
OUT
V
V
7.0
2.0
30
OL
OS
-95
V
V
V
V
V
Pin 3 Open
Pin 11 Open
Pin 12 Open
0.75
0.72
0.72
THRESH
RPKDET
RHYST
IHJ
RPKDET
V
RHYST bias voltage
V
High-level jam input voltage
Low-level jam input voltage
High-level jam input current
Low-level jam input current
High-level flag output voltage
Low-level flag output voltage
High-level flag output current
Low-level flag output current
Short-circuit flag output current
LED ON maximum sink current
V
0.8
30
V
ILJ
I
I
V =2.7V
IJ
µA
µA
V
IHJ
ILJ
V =0.4V
IJ
-485
2.4
-240
3.8
0.33
-18
10
V
OHF
V
OLF
I
=-80µA
OH
I
=3.2mA
0.4
-5
V
OL
I
I
I
I
V
V
V
=2.4V
=0.4V
=0.0V
=3.0V
mA
mA
mA
mA
OHF
OLF
OUT
OUT
OUT
3.25
-61
8
-40
22
-26
80
SCF
V
LEDH
LED
4
1998 Oct 07
Philips Semiconductors
Product specification
Postamplifier with link status indicator
SA5214
AC ELECTRICAL CHARACTERISTICS
Min and Max limits apply over the operating temperature range at V
= V
= +5.0V unless otherwise specified. Typical data applies at
CCA
CCD
V
CCA
= V = +5.0V and T = 25°C.
CCD A
LIMITS
Typ
SYMBOL
PARAMETER
TEST CONDITIONS
Test circuit
UNIT
MHz
MHz
Min
Max
f
Maximum operating frequency
60
75
OP
Small signal bandwidth (differential
BW
Test circuit
75
1.6
12
A1
OUT /IN )
1
1
Maximum Functional A1
input signal (single ended)
V
V
Test Circuit
V
P-P
INH
Minimum Functional A1
input signal (single ended)
1
Test CIrcuit
mV
P-P
INL
Input resistance
(differential at IN )
R
C
R
1200
2
Ω
IN1
IN1
IN2
1
Input capacitance (differential at IN )
pF
1
Input resistance
(differential at IN )
1200
Ω
2
C
R
Input capacitance (differential at IN )
2
pF
IN2
2
Output resistance (differential at OUT )
25
Ω
OUT1
1
Output capacitance (differential at
C
2
3
pF
OUT1
HYS
OUT )
1
V
V
Hysteresis voltage
Test circuit
mV
P-P
P-P
Test circuit, @ 50MHz R
=5k
RHYST
Threshold voltage range (FLAG ON)
12
mV
THR
R
=47k
THRESH
TTL Output Rise Time
20% to 80%
t
t
Test Circuit
Test Circuit
1.3
ns
TLH
TTL Output Fall Time
80% to 20%
1.2
0.1
ns
ns
THL
t
t
t
/t
mismatch
RFD
TLH THL
Pulse width distortion of output 50mV , 1010. . .input
PWD
P-P
2
Distortion=
T -T
10
H
L
T +T
2.5
2.5
%
H
L
NOTES:
1. The SA5214 is capable of detecting a much lower input level. Operation under 12mV
testers.
cannot be guaranteed by present day automatic
P-P
5
1998 Oct 07
Philips Semiconductors
Product specification
Postamplifier with link status indicator
SA5214
V
+5V
CC
NE5214
0.1µF
125
1
20
19
18
17
16
15
14
13
12
11
LED
IN
IN
V
IN
1B
1A
2
0.1µF
C
PKDET
47k
0.1µF
0.1µF
3
4
THRESH
C
C
50
AZP
GND
A
FLAG
AZN
5
25
OUT
1B
2B
6
JAM
IN
100µH
100µH
7
V
OUT
IN
CCD
1A
2A
8
V
CCA
5k
9
GND
R
0.1µF
D
HYST
10
V
R
OUT PKDET
10k
10µF
400
V
15pF
OUT
SD00351
Figure 3. AC Test Circuit
TYPICAL PERFORMANCE CHARACTERISTICS
Analog Supply Current vs Temperature
Digital Supply Current vs Temperature
36
12.0
11.5
11.0
10.5
10.0
9.5
34
V
= 5.25V
CC
32
30
28
26
24
V
= 5.00V
= 4.75V
V
= 5.25V
= 5.00V
CC
CC
CC
V
V
CC
V
= 4.75V
CC
9.0
–60 –40
–20
0
20
40
60
80
100 120
–60 –40 –20
0
20
40
60
80 100
120
TEMPERATURE (°C)
TEMPERATURE (°C)
Threshold Voltage vs R
Hysteresis Voltage vs R
THRESH
R
HYST
22
4
21
20
19
18
17
16
15
14
13
12
= 5k
R
= 47Ω
THRESH
HYST
3
2
1
0
20
30
40
50
4
3
5
6
7
R
(kΩ)
THRESH
R
(kΩ)
SD00352
HYST
Figure 4. Typical Performance Characteristics
6
1998 Oct 07
Philips Semiconductors
Product specification
Postamplifier with link status indicator
SA5214
+V
CC
GND
47µF
C1
C2
.01µF
L1
10µH
C5
R1
100
D1
LED
R2
220
1.0µF
C7
LED
C
1
20
19
V
V
GND
IN
IN
8
9
7
6
CC
1B
1A
100pF
C8
C9
.01µF
C3
C4
.01µF
2
PKDET
GND
GND
10µF
CC
NC
100pF
THRESH
3
18
10
11
5
4
C
C6
AZP
AZN
GND
A
GND
OUT
4
5
17
16
C
I
IN
0.1µF
BPF31
OPTICAL
INPUT
R3
47k
FLAG
JAM
NC
GND
GND
OUT
12
13
3
2
1B
L2
10µH
6
7
15
14
GND
OUT
IN
2B
V
CCD
OUT
14
1
1A
C11
C10
10µF
V
CCA
8
13
12
.01µF
IN
R
2A
GND
D
9
HYST
R
TTL
10
11
C12
PKDET
OUT
L3
C13
10µH
.01µF
10µF
R4
5.1k
V
(TTL)
OUT
NOTE:
The NE5211/NE5214 combination can operate at data rates in excess of 100Mb/s NRZ.
SD00353
Figure 5. A 50Mb/s Fiber Optic Receiver
Operation, please refer to paper titled “A Low Cost 100 MBaud
Fiber-Optic Receiver” by W. Mack et al.
THEORY OF OPERATION AND APPLICATION
INFORMATION
The SA5214 postamplifier system is a highly integrated chip that
provides up to 60dB of gain at 60MHz, to bring mV level signals up
to TTL levels.
A typical application of the SA5214 postamplifier is depicted in
Figure 5. The system uses the SA5211 transimpedance amplifier
which has a 28k differential transimpedance gain and a -3dB
bandwidth of 140MHz. This typical application is optimized for a 50
Mb/s Non Return to Zero (NRZ) bit stream.
The SA5214 contains eight amplifier blocks (see Block Diagram).
The main signal path is made up of a cascade of limiting stages: A1,
A2 and A8. The A3-A4-A7 path performs a wideband full-wave
rectification of the input signal with adjustable hysteresis and decay
times. It outputs a TTL HIGH on the “FLAG” output (Pin 5) when the
input is below a user adjustable threshold. An on-chip LED driver
turns the external LED to the ON state when the input signal is
above the threshold. In a typical application the “FLAG” output is tied
back to the “JAM” input; this forces the TTL data OUT into a LOW
state when no signal is present at the input.
As the system’s gain bandwidth product is very high, it is crucial to
employ good RF design and printed circuit board layout techniques
to prevent the system from becoming unstable.
For more information on this application, please refer to AB 1432.
Die Sales Disclaimer
Due to the limitations in testing high frequency and other parameters
at the die level, and the fact that die electrical characteristics may
shift after packaging, die electrical parameters are not specified and
die are not guaranteed to meet electrical characteristics (including
temperature range) as noted in this data sheet which is intended
only to specify electrical characteristics for a packaged device.
An auto zero loop allows the SA5214 to be directly connected to a
transimpedance amplifier such as the SA5210, SA5211, or SA5212
without coupling capacitors. This auto-zero loop cancels the
transimpedance amplifier’s DC offset, the SA5214 A1 offset, and the
data-dependent offset in the PIN diode/transimpedance amplifier
combination. For more information on the SA5214 Theory of
7
1998 Oct 07
Philips Semiconductors
Product specification
Postamplifier with link status indicator
SA5214
All die are 100% functional with various parametrics tested at the
wafer level, at room temperature only (25°C), and are guaranteed to
be 100% functional as a result of electrical testing to the point of
wafer sawing only. Although the most modern processes are
utilized for wafer sawing and die pick and place into waffle pack
carriers, it is impossible to guarantee 100% functionality through this
process. There is no post waffle pack testing performed on
individual die.
Semiconductors assumes no liability for device functionality or
performance of the die or systems on any die sales.
Although Philips Semiconductors typically realizes a yield of 85%
after assembling die into their respective packages, with care
customers should achieve a similar yield. However, for the reasons
stated above, Philips Semiconductors cannot guarantee this or any
other yield on any die sales.
Since Philips Semiconductors has no control of third party
procedures in the handling or packaging of die, Philips
IN1B
LED
C
IN1A
PKDET
CAZP
THRESH
1
2
20
19
CAZN
GNDA
3
18
4
17
FLAG
OUT1B
16
5
15
6
JAM
IN2B
14
7
8
13
OUT1A
V
CCD
9
10
11
12
V
CCA
IN2A
R
HYST
GNDD
R
V
PKDET
OUT
ECN No.: 94620
1988 Sep 28
SD00490
Figure 6. SA5214 Bonding Diagram
8
1998 Oct 07
Philips Semiconductors
Product specification
Postamplifier with link status indicator
SA5214
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
9
1998 Oct 07
Philips Semiconductors
Product specification
Postamplifier with link status indicator
SA5214
Data sheet status
[1]
Data sheet
status
Product
status
Definition
Objective
specification
Development
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
Preliminary
specification
Qualification
This data sheet contains preliminary data, and supplementary data will be published at a later date.
Philips Semiconductors reserves the right to make chages at any time without notice in order to
improve design and supply the best possible product.
Product
specification
Production
This data sheet contains final specifications. Philips Semiconductors reserves the right to make
changes at any time without notice in order to improve design and supply the best possible product.
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Righttomakechanges—PhilipsSemiconductorsreservestherighttomakechanges, withoutnotice, intheproducts, includingcircuits,standard
cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Date of release: 10-98
Document order number:
9397 750 04626
Philips
Semiconductors
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