PHILIPS TZA3000U

INTEGRATED CIRCUITS
DATA SHEET
TZA3000
SDH/SONET STM4/OC12 optical
receiver
Objective specification
File under Integrated Circuits, IC19
1997 Oct 17
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
FEATURES
APPLICATIONS
• Low equivalent input noise, typically 3.5 pA/√Hz
• Digital fibre optic receiver in short, medium and long
haul optical telecommunications transmission systems
or in high speed data networks
• Wide dynamic range, typically 1 µA to 1.5 mA
• On-chip low-pass filter. The bandwidth can be varied
between 370 and 600 MHz using an external resistor.
Default value is 470 MHz.
• Wideband RF gain block.
• Differential transimpedance of 1.8 MΩ
DESCRIPTION
• On-chip AGC (Automatic Gain Control)
The TZA3000 optical receiver is a low-noise
transimpedance amplifier with AGC plus a limiting
amplifier designed to be used in SDH/SONET fibre optic
links. The TZA3000 amplifies the current generated by a
photo detector (PIN diode or avalanche photodiode) and
converts it to a differential output voltage.
• PECL (Positive Emitter-Coupled Logic) or CML
(Current-Mode Logic) compatible data outputs
• LOS (Loss-Of-Signal) detection
• LOS threshold level can be adjusted using a single
external resistor
• On-chip DC offset compensation
• Single supply voltage from 3.0 to 5.5 V
• Bias voltage for PIN diode.
ORDERING INFORMATION
PACKAGE
TYPE
NUMBER
NAME
TZA3000HL
LQFP32
TZA3000U
naked die
1997 Oct 17
DESCRIPTION
plastic low profile quad flat package; 32 leads; body 5 × 5 × 1.4 mm
die in waffle pack carriers; die dimensions 1.58 × 1.58 mm
2
VERSION
SOT401-1
−
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
BLOCK DIAGRAM
AGC
VCCA
handbook, full pagewidth
VCCD
2
2
2, 5
31
17, 20
LOS DETECTION
TTL
PECL
peak detector
DREF
4
IPhoto
7
2
kΩ
29
LOSTH
28
LOSTTL
26
LOS
27
LOSQ
18
OUTCML
19
OUTQCML
15
OUTSEL
GAINCONTROL
CML
A1
A2
PECL
PREAMPLIFIER
LIMITING
AMPLIFIER
22
OUTPECL
23
OUTQPECL
DC-OFFSET
COMPENSATION
TESTING
1, 3, 6, 8
9, 30, 32
14
BIASING
TZA3000
10
11
7
AGND
5
RFTEST
BWC
Vref
Fig.1 Block diagram.
1997 Oct 17
13, 16, 21
24, 25
3
DGND
MGK881
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
PINNING
SYMBOL
PIN
TYPE
DESCRIPTION
AGND
1
ground
analog ground
VCCA
2
supply
analog supply voltage
AGND
3
ground
analog ground
DREF
4
analog output bias voltage for PIN diode (VCCA); cathode should be connected to this pin
VCCA
5
supply
analog supply voltage
AGND
6
ground
analog ground
IPhoto
7
analog input
current input; connect the anode of PIN diode to this pin; DC bias level is
800 mV, one diode voltage above ground
AGND
8
ground
analog ground
AGND
9
ground
analog ground
BWC
10
analog input
bandwidth control pin; default bandwidth is 470 MHz; a resistor should be
connected between Vref (pin 11) and BWC (pin 10) to decrease bandwidth, or
between BWC (pin 10) and AGND to increase bandwidth
Vref
11
analog output band gap reference voltage; nominal value approximately 1.2 V
SUB
12
substrate
substrate pin; to be connected to AGND
DGND
13
ground
digital ground
RFTEST
14
analog input
test pin; not used in application; not connected
OUTSEL
15
CMOS input
output select pin; when OUTSEL is HIGH, CML data outputs are active and
PECL data outputs are disabled; OUTSEL is pulled LOW if left unconnected,
PECL data outputs will then be active and CML data outputs disabled
DGND
16
ground
digital ground
VCCD
17
supply
digital supply voltage
OUTCML
18
CML output
CML data output; OUTCML goes HIGH when current flows into IPhoto (pin 7)
OUTQCML
19
CML output
CML compliment of OUTCML (pin 18)
VCCD
20
supply
digital supply voltage
DGND
21
ground
digital ground
OUTPECL
22
PECL output
PECL data output; OUTPECL goes HIGH when current flows into IPhoto (pin 7)
OUTQPECL
23
PECL output
PECL compliment of OUTPECL (pin 22)
DGND
24
ground
digital ground
DGND
25
ground
digital ground
LOS
26
PECL output
PECL-compatible LOS detection pin; LOS output is HIGH when the input signal
is below the user programmable threshold level
LOSQ
27
PECL output
PECL compliment of LOS
LOSTTL
28
TTL output
CMOS-compatible LOS detection pin; the LOSTTL output is HIGH when the
input signal is below the user programmable threshold level
LOSTH
29
analog I/O
pin for setting input threshold level; nominal DC voltage is VCCA − 1.5 V;
threshold level set by connecting an external resistor between LOSTH and
VCCA or by forcing a current into LOSTH; default value for this resistor is 86 kΩ
AGND
30
ground
analog ground
AGC
31
analog I/O
AGC monitor voltage; the internal AGC circuit can be disabled by applying an
external voltage to this pin
AGND
32
ground
analog ground
1997 Oct 17
4
Philips Semiconductors
Objective specification
25 DGND
TZA3000
26 LOS
27 LOSQ
28 LOSTTL
29 LOSTH
30 AGND
32 AGND
handbook, full pagewidth
31 AGC
SDH/SONET STM4/OC12 optical receiver
AGND
1
24 DGND
VCCA
2
23 OUTQPECL
AGND
3
22 OUTPECL
DREF
4
21 DGND
TZA3000HL
18 OUTCML
AGND
8
17 VCCD
AGND
Fig.2 Pin configuration.
1997 Oct 17
5
DGND 16
7
OUTSEL 15
IPhoto
RFTEST 14
19 OUTQCML
DGND 13
6
SUB 12
AGND
Vref 11
20 VCCD
BWC 10
5
9
VCCA
MGK880
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
CHIP DIMENSIONS AND BONDING PAD LOCATIONS
COORDINATES(1)
COORDINATES(1)
SYMBOL
SYMBOL
PAD
x
y
PAD
OUTQCML
19
x
y
1398
543
AGND
1
102
1251
VCCA
2
102
1111
VCCD
20
1398
683
21
1398
823
AGND
3
102
971
DGND
DREF
4
102
814
OUTPECL
22
1398
963
VCCA
5
102
674
OUTQPECL
23
1398
1103
AGND
6
102
534
DGND
24
1398
1243
IPhoto
7
102
395
DGND
25
1283
1400
AGND
8
102
254
LOS
26
1143
1400
AGND
9
243
105
LOSQ
27
986
1400
BWC
10
383
105
LOSTTL
28
829
1400
Vref
11
523
105
LOSTH
29
671
1400
SUB
12
663
105
AGND
30
514
1400
DGND
13
803
105
AGC
31
357
1400
RFTEST
14
943
105
AGND
32
217
1400
OUTSEL
15
1100
105
Note
1. All coordinates are referenced, in µm, to the bottom
left-hand corner of the die.
403
handbook, full pagewidth
31
30
29
28
27
26
25
AGND
1
24
DGND
VCCA
2
23
OUTQPECL
AGND
3
22
OUTPECL
DREF
4
21
DGND
VCCA
5
20
VCCD
AGND
6
19
OUTQCML
IPhoto
7
18
OUTCML
AGND
8
17
VCCD
14
15
16
DGND
y
13
OUTSEL
12
DGND
11
RFTEST
10
SUB
0
9
Vref
0
TZA3000U
BWC
x
32
AGND
1.58
mm
DGND
1398
LOS
18
LOSQ
OUTCML
LOSTTL
263
LOSTH
105
1398
AGND
1257
17
AGC
16
VCCD
AGND
DGND
1.58 mm
Fig.3 Bonding pad locations: TZA3000U.
1997 Oct 17
6
MGK882
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
FUNCTIONAL DESCRIPTION
Limiting amplifier
The TZA3000 contains five functional blocks:
A limiting amplifier boosts the signal up to PECL levels.
The output can be either CML or PECL compatible,
selected by means of pin OUTSEL. When OUTSEL is
HIGH, CML data outputs are active and PECL data
outputs are disabled. If OUTSEL is left unconnected, it is
pulled LOW and PECL data outputs are active while CML
data outputs are disabled.
• Preamplifier input stage
• Low-pass filter
• Limiting amplifier stage
• Offset compensation loop
• Loss-of-signal detection unit.
Offset cancellation loop
Preamplifier
A control loop connected between the limiting amplifier
output and the differential amplifier input cancels the DC
offset. The loop bandwidth is fixed internally at 30 kHz.
The preamplifier provides low-noise amplification of the
current generated by a photodiode connected to the
IPhoto pin.
A differential amplifier converts the output of the
preamplifier to a differential voltage. An AGC loop
increases the dynamic range of the receiver by reducing
the feedback resistance of the preamplifier. The AGC loop
hold capacitor is integrated on-chip, so an external
capacitor is not needed for AGC. The AGC voltage can be
monitored at pin 31. This pin can be left unconnected for
normal operation. It can also be used to force an external
AGC voltage. If pin 31 (AGC) is connected to AGND, the
internal AGC loop is disabled and the receiver gain is at a
maximum. In this case, the maximum input current is about
50 µA.
Loss-of-signal detection (LOS)
The LOS section detects an input signal level below a fixed
threshold. The threshold is determined by the current
through pin LOSTH. If this current is increased, the
threshold level will rise. An external resistor between
LOSTH and VCCA can be used, or a current can be forced
into LOSTH. The default value for the external resistor is
86 kΩ. In this case, the current through LOSTH will be
approximately 17.4 µA since the voltage at pin LOSTH is
regulated at 1.5 V below the supply voltage. This threshold
corresponds to an input current of 0.96 µA. The ratio of
LOSTH current to input current is thus approximately
18 : 1. When the input signal level falls below this
threshold, the LOS (PECL compatible) and LOSTTL (TTL
compatible) outputs go HIGH. The hysteresis is fixed
internally at 3 dB. Response time is typically less than
20 µs.
Low-pass filter
A low-pass filter controls the bandwidth of the receiver,
which can be varied between 300 and 600 MHz.
The bandwidth is set to 470 MHz by default. It can be
decreased by connecting a resistor between BWC (pin 10)
and Vref (pin 11) or increased by connecting a resistor
between BWC and AGND.
1997 Oct 17
7
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
PARAMETER
MAX.
UNIT
−0.5
+6
V
pin 7: IPhoto
−0.5
+1
V
pin 14: RFTEST
−0.5
VCC
supply voltage
Vn
DC voltage
In
MIN.
VCC + 0.5 V
pins 22, 23, 26 and 27: OUTPECL, OUTQPECL, LOS and LOSQ VCC − 2
VCC + 0.5 V
pins 18 and 19: OUTCML and OUTQCML
VCC − 2
VCC + 0.5 V
pin 29: LOSTH
−0.5
VCC + 0.5 V
pin 10: BWC
−0.5
+3.2
pin 31: AGC
−0.5
VCC + 0.5 V
pin 11: Vref
−0.5
+3.2
V
V
pin 4: DREF
−0.5
VCC + 0.5 V
pin 15: OUTSEL
−0.5
VCC + 0.5 V
pin 28: LOSTTL
−0.5
VCC + 0.5 V
pin 7: IPhoto
−1
+2.5
mA
pin 14: RFTEST
−2
+2
mA
pins 22, 23, 26 and 27: OUTPECL, OUTQPECL, LOS and LOSQ −25
+10
mA
pins 18,19: OUTCML and OUTQCML
−15
+15
mA
pin 29: LOSTH
−2
+2
mA
pin 10: BWC
−1
+1
mA
pin 31: AGC
−0.2
+0.2
mA
pin 11: Vref
−2
+2.5
mA
pin 4: DREF
−2.5
+2.5
mA
pin 15: OUTSEL
−0.5
+0.5
mA
pin 28: LOSTTL
−16
+16
mA
600
mW
DC current
Ptot
total power dissipation
−
Tstg
storage temperature
−65
+150
°C
Tj
junction temperature
−
150
°C
Tamb
ambient temperature
−40
+85
°C
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
VALUE
UNIT
Rth(j-s)
thermal resistance from junction to solder point
tbf
K/W
Rth(j-a)
thermal resistance from junction to ambient
tbf
K/W
1997 Oct 17
8
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
CHARACTERISTICS
For typical values Tamb = 25 °C and VCC = 5 V; minimum and maximum values are valid over the entire ambient
temperature range and process spread.
SYMBOL
PARAMETER
VCC
supply voltage
ICCD
digital supply current
CONDITIONS
MIN.
3
TYP.
5
MAX.
5.5
UNIT
V
note 1
13
20
28
mA
note 2
−
47
−
mA
note 3
11
17
24
mA
ICCA
analog supply current
24
36
51
mA
Ptot
total power dissipation
−
−
525
mW
Tj
junction temperature
−40
−
+110
°C
Tamb
ambient temperature
−40
+25
+85
°C
Rtr
small-signal transresistance
of the receiver
measured differentially at
PECL outputs
−
1800
−
kΩ
measured differentially at
CML outputs
−
1100
−
kΩ
pin BWC left
unconnected; note 4
−
470
−
MHz
20
30
40
kHz
−400
+4
+1500
µA
f−3dB(h)
high frequency −3dB point
f−3dB(l)
low frequency −3dB point
Ii(IPhoto)(p-p) input current on pin IPhoto
(peak-to-peak value)
VCC = 5 V
VCC = 3.3 V
Vbias(IPhoto) input bias voltage on pin
IPhoto
In(tot)
PSRR
total integrated RMS noise
current over bandwidth
(referenced to input)
power supply rejection ratio
at VCC
+4
+500
µA
800
970
mV
−
55
−
nA
Ci = 1.2 pF; note 5
∆f = 311 MHz
∆f = 450 MHz
−
80
−
nA
∆f = 622 MHz
−
120
−
nA
measured differentially;
note 6
−
1
2
µA/V
f = 10 MHz to 100 MHz −
2
5
µA/V
−
5
100
µA/V
−
1
−
dB/ms
VCC − 900
mV
f = 100 kHz to 10 MHz
f = 100 MHz to 1 GHz
∆Rtr/∆t
−400
720
AGC loop constant
PECL outputs: OUTPECL and OUTQPECL
VOL
LOW-level output voltage
50 Ω to VCC − 2 V
VOH
HIGH-level output voltage
50 Ω to VCC − 2 V
VOO
differential output offset
voltage
tr
rise time
tf
fall time
1997 Oct 17
VCC − 1100 −
VCC − 1840 −
VCC − 1620 mV
−10
−
+10
mV
20% to 80%
−
200
300
ps
80% to 20%
−
140
250
ps
9
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
SYMBOL
PARAMETER
TZA3000
CONDITIONS
MIN.
TYP.
MAX.
UNIT
PECL outputs: LOS and LOSQ
VOL
LOW-level output voltage
50 Ω to VCC − 2 V
VCC − 1100 −
VCC − 900
VOH
HIGH-level output voltage
50 Ω to VCC − 2 V
VCC − 1840 −
VCC − 1620 mV
VOO
differential output offset
voltage
−10
−
+10
mV
tr
rise time
20% to 80%
−
−
600
ns
tf
fall time
80% to 20%
−
−
200
ns
mV
CML outputs: OUTCML and OUTQCML
VO
single ended output voltage
50 Ω to VCC
VCC − 260
−
VCC
mV
Vo(se)(p-p)
single-ended output voltage
(peak-to-peak value)
50 Ω to VCC
150
200
260
mV
VOO
differential output offset
voltage
50 Ω to VCC
−10
−
+10
mV
Ro
single ended output
resistance
80
100
120
Ω
tr
rise time
20% to 80%;
50 Ω, 1 pF load
−
92
−
ps
tf
fall time
80% to 20%;
50 Ω, 1 pF load
−
62
−
ps
0.8
V
CMOS input: OUTSEL
VIL
LOW-level input voltage
−
0.4
VIH
HIGH-level input voltage
VCC − 1
VCC − 0.5 −
V
CMOS output: LOSTTL
VOL
LOW-level output voltage
0
−
0.2
V
VOH
HIGH-level output voltage
VCC − 0.2
−
VCC
V
Notes
1. OUTPECL, OUTQPECL, OUTCML, OUTQCML, LOS and LOSQ outputs are left unconnected. OUTPECL and
OUTQPECL outputs are active.
2. OUTPECL and OUTQPECL outputs are terminated with 50 Ω to VT. VT is an external termination voltage for PECL
outputs and is 2 V below the supply voltage. OUTCML, OUTQCML, LOS and LOSQ outputs are left unconnected
3. OUTCML and OUTQCML outputs are terminated with 50 Ω to VCCD; CML outputs are active. OUTPECL,
OUTQPECL, LOS and LOSQ outputs are left unconnected
4. The bandwidth is set to 470 MHz by default. It can be varied between 300 and 600 MHz by adjusting the voltage at
pin BWC.
5. All In(tot) measurements were made with an input capacitance of Ci = 1.2 pF. This was comprised of 0.7 pF for the
photodiode itself, with 0.3 pF allowed for the PCB layout and 0.2 pF intrinsic to the package.
6. PSRR is defined as the ratio of the equivalent current change at the input (∆IIPhoto) to a change in supply voltage:
∆I IPhoto
PSRR = ------------------∆V CC
For example, a 1 mV disturbance on VCC at 10 MHz will typically generate the equivalent of 2 nA extra photodiode
current.
1997 Oct 17
10
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
APPLICATION INFORMATION
VCC
handbook, full pagewidth
680 nF
10 µH
22 nF
22 nF
86 kΩ
2
VCCA
2
VCCD
LOSTH
2, 5
10 µH
29
17, 20
27
26
DREF
28
4
23
TZA3000
IPhoto
22
7
19
1, 3, 6, 8
9, 30, 32
AGND
31
10
AGC
14
BWC
11
RFTEST
13, 16, 21 18
24, 25
15
Vref
OUTSEL
7
LOSQ
LOS
LOSTTL
OUTQPECL
R1
R1
Zo = 50 Ω
OUTPECL
OUTQCML
Zo = 50 Ω
R2
R2
OUTCML
DGND
MGK883
5
Fig.4 Application diagram: PECL data outputs active.
VCC
handbook, full pagewidth
680 nF
10 µH
22 nF
22 nF
86 kΩ
2
VCCA
2
VCCD
LOSTH
2, 5
10 µH
29
17, 20
27
26
DREF
28
4
23
TZA3000
IPhoto
22
LOSQ
LOS
LOSTTL
OUTQPECL
OUTPECL
7
19
1, 3, 6, 8
9, 30, 32
AGND
31
10
AGC
BWC
14
RFTEST
11
Vref
13, 16, 21 18
24, 25
15
OUTSEL
7
OUTQCML
50
Ω
Zo = 50 Ω
DGND
5
11
50
Ω
OUTCML
Fig.5 Application diagram: CML data outputs active.
1997 Oct 17
Zo = 50 Ω
MGK884
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
CML/PECL OUTPUT
handbook, full pagewidth
VCC
VO(max)
VOQH
VOH
Vo (p-p)
VOQL
VOL
VOO
VO(min)
MGK885
Fig.6 Logic level symbol definitions for CML and PECL.
VCC
handbook, full pagewidth
VCC
100 Ω
105 Ω
100 Ω
OUTCML
105 Ω
OUTQCML
OUTPECL
OUTQPECL
0.5 mA
9 mA
6 mA
0.5 mA
MGK886
a. CML.
b. PECL.
Fig.7 Output circuits.
1997 Oct 17
12
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
PECL outputs: OUTPECL (22), OUTQPECL (23), LOS (26) and LOSQ (27)
VCC = 3.3 V
handbook, full pagewidth
R1 = 127 Ω
VIQ
VI
R1 = 127 Ω
VOQ
VO
R2 = 82.5 Ω
R2 = 82.5 Ω
GND
VCC = 5 V
R1 = 83.3 Ω
VIQ
VI
VO
R2 = 125 Ω
GND
Fig.8 PECL termination schemes.
1997 Oct 17
R1 = 83.3 Ω
VOQ
13
R2 = 125 Ω
MGK887
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
100 Ω, an 8 mA tail current would be needed to generate
the same voltage swing. This would increase power
dissipation by 33%.
CML outputs: OUTCML (18) and OUTQCML (19)
The output impedance of the CML output driver is 100 Ω
(see Figs 7 and 9), which doesn’t match the characteristic
impedance of the strip line. While this means that the
reflections of some incident edges will arrive at the driver
output on the PCB, this value was selected to reduce
power dissipation inside the IC. The parallel combination
of 100 Ω and 50 Ω (33 Ω) will generate a signal swing of
200 mV peak-to-peak (single sided) with a tail current of
6 mA. If the output impedance was 50 Ω rather than
generator
inside TZA3000
handbook, full pagewidth
TZA3000
If necessary, the output impedance of the generator can
be matched to the line impedance by connecting an
external 100 Ω resistor in parallel with the output as shown
in Fig.10. The magnitude of the output voltage swing will
not change due to adaptive regulation. However, power
dissipation will increase by 33%.
interconnect
PCB
receiver
inside TZA3004
VCC
100
Ω
VCC
100
Ω
Zo = 50 Ω
VO
VI
Zo = 50 Ω
50 Ω
50 Ω
VIQ
VOQ
MGK888
Fig.9 CML interface circuit without matched impedance; low power dissipation.
generator
inside TZA3000
handbook, full pagewidth
interconnect
PCB
receiver
inside TZA3004
VCC
100
Ω
VCC
100
Ω
100
Ω
VO
100
Ω
Zo = 50 Ω
VI
Zo = 50 Ω
50 Ω
50 Ω
VIQ
VOQ
MGK889
Fig.10 CML interface circuit with matched impedance; higher power dissipation.
1997 Oct 17
14
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
PACKAGE OUTLINE
SOT401-1
LQFP32: plastic low profile quad flat package; 32 leads; body 5 x 5 x 1.4 mm
c
y
X
A
17
24
ZE
16
25
e
A A2
E HE
(A 3)
A1
w M
pin 1 index
θ
bp
32
Lp
9
L
1
8
detail X
ZD
e
v M A
w M
bp
D
B
HD
v M B
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
max.
A1
A2
A3
bp
c
D (1)
E (1)
e
HD
HE
L
Lp
v
w
y
mm
1.60
0.15
0.05
1.5
1.3
0.25
0.27
0.17
0.18
0.12
5.1
4.9
5.1
4.9
0.5
7.15
6.85
7.15
6.85
1.0
0.75
0.45
0.2
0.12
0.1
Z D (1) Z E (1)
θ
0.95
0.55
7
0o
0.95
0.55
o
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
OUTLINE
VERSION
REFERENCES
IEC
JEDEC
EIAJ
ISSUE DATE
95-12-19
97-08-04
SOT401-1
1997 Oct 17
EUROPEAN
PROJECTION
15
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
If wave soldering cannot be avoided, the following
conditions must be observed:
SOLDERING
Introduction
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave)
soldering technique should be used.
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
• The footprint must be at an angle of 45° to the board
direction and must incorporate solder thieves
downstream and at the side corners.
Even with these conditions, do not consider wave
soldering LQFP packages LQFP48 (SOT313-2),
LQFP64 (SOT314-2) or LQFP80 (SOT315-1).
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “IC Package Databook” (order code 9398 652 90011).
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Reflow soldering
Reflow soldering techniques are suitable for all LQFP
packages.
Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.
Repairing soldered joints
Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
Wave soldering
Wave soldering is not recommended for LQFP packages.
This is because of the likelihood of solder bridging due to
closely-spaced leads and the possibility of incomplete
solder penetration in multi-lead devices.
1997 Oct 17
TZA3000
16
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
TZA3000
DEFINITIONS
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification
This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This data sheet contains final product specifications.
Limiting values
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
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
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 customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1997 Oct 17
17
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
NOTES
1997 Oct 17
18
TZA3000
Philips Semiconductors
Objective specification
SDH/SONET STM4/OC12 optical receiver
NOTES
1997 Oct 17
19
TZA3000
Philips Semiconductors – a worldwide company
Argentina: see South America
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,
Tel. +61 2 9805 4455, Fax. +61 2 9805 4466
Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213, Tel. +43 160 1010,
Fax. +43 160 101 1210
Belarus: Hotel Minsk Business Center, Bld. 3, r. 1211, Volodarski Str. 6,
220050 MINSK, Tel. +375 172 200 733, Fax. +375 172 200 773
Belgium: see The Netherlands
Brazil: see South America
Bulgaria: Philips Bulgaria Ltd., Energoproject, 15th floor,
51 James Bourchier Blvd., 1407 SOFIA,
Tel. +359 2 689 211, Fax. +359 2 689 102
Canada: PHILIPS SEMICONDUCTORS/COMPONENTS,
Tel. +1 800 234 7381
China/Hong Kong: 501 Hong Kong Industrial Technology Centre,
72 Tat Chee Avenue, Kowloon Tong, HONG KONG,
Tel. +852 2319 7888, Fax. +852 2319 7700
Colombia: see South America
Czech Republic: see Austria
Denmark: Prags Boulevard 80, PB 1919, DK-2300 COPENHAGEN S,
Tel. +45 32 88 2636, Fax. +45 31 57 0044
Finland: Sinikalliontie 3, FIN-02630 ESPOO,
Tel. +358 9 615800, Fax. +358 9 61580920
France: 4 Rue du Port-aux-Vins, BP317, 92156 SURESNES Cedex,
Tel. +33 1 40 99 6161, Fax. +33 1 40 99 6427
Germany: Hammerbrookstraße 69, D-20097 HAMBURG,
Tel. +49 40 23 53 60, Fax. +49 40 23 536 300
Greece: No. 15, 25th March Street, GR 17778 TAVROS/ATHENS,
Tel. +30 1 4894 339/239, Fax. +30 1 4814 240
Hungary: see Austria
India: Philips INDIA Ltd, Band Box Building, 2nd floor,
254-D, Dr. Annie Besant Road, Worli, MUMBAI 400 025,
Tel. +91 22 493 8541, Fax. +91 22 493 0966
Indonesia: see Singapore
Ireland: Newstead, Clonskeagh, DUBLIN 14,
Tel. +353 1 7640 000, Fax. +353 1 7640 200
Israel: RAPAC Electronics, 7 Kehilat Saloniki St, PO Box 18053,
TEL AVIV 61180, Tel. +972 3 645 0444, Fax. +972 3 649 1007
Italy: PHILIPS SEMICONDUCTORS, Piazza IV Novembre 3,
20124 MILANO, Tel. +39 2 6752 2531, Fax. +39 2 6752 2557
Japan: Philips Bldg 13-37, Kohnan 2-chome, Minato-ku, TOKYO 108,
Tel. +81 3 3740 5130, Fax. +81 3 3740 5077
Korea: Philips House, 260-199 Itaewon-dong, Yongsan-ku, SEOUL,
Tel. +82 2 709 1412, Fax. +82 2 709 1415
Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA, SELANGOR,
Tel. +60 3 750 5214, Fax. +60 3 757 4880
Mexico: 5900 Gateway East, Suite 200, EL PASO, TEXAS 79905,
Tel. +9-5 800 234 7381
Middle East: see Italy
Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB,
Tel. +31 40 27 82785, Fax. +31 40 27 88399
New Zealand: 2 Wagener Place, C.P.O. Box 1041, AUCKLAND,
Tel. +64 9 849 4160, Fax. +64 9 849 7811
Norway: Box 1, Manglerud 0612, OSLO,
Tel. +47 22 74 8000, Fax. +47 22 74 8341
Philippines: Philips Semiconductors Philippines Inc.,
106 Valero St. Salcedo Village, P.O. Box 2108 MCC, MAKATI,
Metro MANILA, Tel. +63 2 816 6380, Fax. +63 2 817 3474
Poland: Ul. Lukiska 10, PL 04-123 WARSZAWA,
Tel. +48 22 612 2831, Fax. +48 22 612 2327
Portugal: see Spain
Romania: see Italy
Russia: Philips Russia, Ul. Usatcheva 35A, 119048 MOSCOW,
Tel. +7 095 755 6918, Fax. +7 095 755 6919
Singapore: Lorong 1, Toa Payoh, SINGAPORE 1231,
Tel. +65 350 2538, Fax. +65 251 6500
Slovakia: see Austria
Slovenia: see Italy
South Africa: S.A. PHILIPS Pty Ltd., 195-215 Main Road Martindale,
2092 JOHANNESBURG, P.O. Box 7430 Johannesburg 2000,
Tel. +27 11 470 5911, Fax. +27 11 470 5494
South America: Rua do Rocio 220, 5th floor, Suite 51,
04552-903 São Paulo, SÃO PAULO - SP, Brazil,
Tel. +55 11 821 2333, Fax. +55 11 829 1849
Spain: Balmes 22, 08007 BARCELONA,
Tel. +34 3 301 6312, Fax. +34 3 301 4107
Sweden: Kottbygatan 7, Akalla, S-16485 STOCKHOLM,
Tel. +46 8 632 2000, Fax. +46 8 632 2745
Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH,
Tel. +41 1 488 2686, Fax. +41 1 481 7730
Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1,
TAIPEI, Taiwan Tel. +886 2 2134 2865, Fax. +886 2 2134 2874
Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd.,
209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260,
Tel. +66 2 745 4090, Fax. +66 2 398 0793
Turkey: Talatpasa Cad. No. 5, 80640 GÜLTEPE/ISTANBUL,
Tel. +90 212 279 2770, Fax. +90 212 282 6707
Ukraine: PHILIPS UKRAINE, 4 Patrice Lumumba str., Building B, Floor 7,
252042 KIEV, Tel. +380 44 264 2776, Fax. +380 44 268 0461
United Kingdom: Philips Semiconductors Ltd., 276 Bath Road, Hayes,
MIDDLESEX UB3 5BX, Tel. +44 181 730 5000, Fax. +44 181 754 8421
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 625 344, Fax.+381 11 635 777
For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications,
Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
Internet: http://www.semiconductors.philips.com
© Philips Electronics N.V. 1997
SCA55
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
427027/300/01/pp20
Date of release: 1997 Oct 17
Document order number:
9397 750 01679