TGA4943-SL
40 & 100 Gb/s 8Vpp Optical Modulator Driver
Key Features
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40 & 100 Gb/s Performance
Single Ended Input and Output
Adjustable Output Amplitude, 3 Vpp – 9 Vpp
Low Additive RMS Jitter, 500 fsec
High Output Drive, 8Vpp with 0.4 Vpp Input
Gain, 32 dB at 20 GHz
Low DC Power Dissipation, 1.7 W for Vout =
8Vpp at Vd=6 V
Rise and Fall Times <12 psec
Hot Pluggable
Package Size: 14.4 x 7 x 2 mm
40 GB/s Optical Market: DQPSK (2x)
40 GB/s Optical Market: DPSK (1x)
100 GB/s Optical Market: DP-QPSK (4x)
Measured Performance
Bias conditions: Vd1,2,3 = 7 V, Idq = 310 mA,
Vc1,2,3 = 0.7, 0.7, 0.8 V Typical
22 Gb/s, 0.48 Vpp Input, Vout = 7.2 Vpp.
Primary Applications
DQPSK
Product Description
The TriQuint TGA4943-SL is a three stage optical
modulator driver amplifier designed to operate at
frequencies that target both the 40 and 100 Gb/s
optical market using an 14.4 x 7 x 2 mm surface
mount system in package (SIP).
The TGA4943-SL consists of three high
performance wideband amplifiers assembled in a
surface mount package combined with a minimum
of off-chip components. A single TGA4943-SL
placed between the MUX and Optical Modulator
provides OEMs with a modulator driver surface
mount solution.
The TGA4943-SL provides Metro and Long Haul
designers with system critical features such as:
low power dissipation, low rail ripple, high voltage
drive capability (3 Vpp amplitude adjustable up to 9
Vpp), low output jitter, and low input drive
sensitivity (0.4 Vpp – 1 Vpp at Vout = 8Vpp).
The TGA4943-SL finish is lead-free. RoHS
compliant. Evaluation boards are available upon
request. Please contact TQS for TGA4943-SL
Application Note.
1
Vin = 0.5 Vpp, Vout = 8Vpp, 21.5 Gbps, PRBS 2^31 -1
TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504
info-networks@tqs.com
May 2011 © Rev E
TGA4943-SL
Table I
Absolute Maximum Ratings 1/
Symbol
Vd1, Vd2, Vd3
Vd1-Vg1, Vd2-Vg2,
Vd3-Vg3
Vg1, Vg2, Vg3
Vc1, Vc2, Vc3
Id1, Id2
Id3
Ig1, Ig2, Ig3
Drain Voltage
Drain to Gate Voltage
Gate Voltage Range
Control Voltage Range
Drain Current
Drain Current
Gate Current Range
Parameter
Value
9V
10 V, 13 V, 13 V
-5 to 0 V
(Vd-7) to +5.5 V
80, 135 mA
270 mA
-15 to 21 mA,
-30 to 21 mA,
-30 to 21 mA
-15 to 21 mA
7V
24 dBm
3.05 W
200 °C
Notes
2/ 3/ 4/ 5/
2/ 3/ 4/ 5/
3/ 4/ 5/
2/
2/
5/
Ic1, Ic2, Ic3
Vin_pp
Pin
Pd
Tch
1/
Control Current Range
Peak-Peak Input Voltage
Input Continuous Wave Power
Max Power Dissipation
Maximum Channel Temperature
5/
2/
6/
These ratings represent the maximum operable values for this device. Stresses beyond those listed
under “Absolute Maximum Ratings” may cause permanent damage to the device and / or affect
device lifetime. These are stress ratings only, and functional operation of the device at these
conditions is not implied.
Combinations of supply voltage, supply current, input power, and output power shall not exceed the
maximum power dissipation listed in Table IV.
Assure Vd1 – (Vc1-Vg1) – Id1*50
≤
6.5 V,
Assure Vd2 – (Vc2-0.34*Vg2) – Id2*50
≤
6.5 V,
Assure Vd3 – (Vc3-0.34*Vg3)
≤
6.5 V,
2/
3/
4/
Assure (Vd1-Id1*50) –Vc1 >= -0.5,
Assure (Vd2-Id2*50) –Vc2 >= -0.5,
Assure Vd3 – Vc3 >= -0.5.
5/
6/
HOT PLUGGABLE: Comply with voltage and currents outlined in Max Ratings Table.
Maximum Power Dissipation is based upon Baseplate temperature of 80
°C
and Channel
Temperature of 200
°C,
using the thermal resistance published in Table IV.
TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504 info-networks@tqs.com
May 2011 © Rev E
2
TGA4943-SL
Table II
Recommended Operating Conditions
21.5 Gbps Operation Vin = 500 mVpp
Output
Voltage
(Vpp)
Drain
Voltage:
Vd1,
Vd2, Vd3
(V)
Quiescent
Drain
Current:
Idq1, Idq2,
Idq3 (mA)
Under RF
Drive
Drain
Current:
Id1+ Id2 +
Id3
(mA)
44, 72, 91
44, 72, 101
44, 72, 125
44, 72, 149
Control
Voltage:
Vc1, Vc2,
Vc3 (V)
Gate Voltage:
Vg1, Vg2, Vg3
(V)*
Pdiss
(W)
3.6
4
5
6
5
5
5
5
40, 30, 84
40, 30, 100
40, 30, 133
40, 30, 160
0.7, 0.7, -0.23
0.7, 0.7, -0.01
0.7, 0.7, 0.23
0.7, 0.7, 0.42
-0.56, -1.89, -1.34
-0.56, -1.89, -1.25
-0.56, -1.89, -1.09
-0.56, -1.89, -0.97
0.96
1.00
1.09
1.18
4
5
6
7
8
6
6
6
6
6
51, 51, 63
51, 51, 100
51, 51, 135
51, 51, 167
51, 51, 201
53, 90, 101
53, 90,125
53, 90,149
53, 90,175
53, 90, 201
0.7, 0.7, -0.06
0.7, 0.7, 0.14
0.7, 0.7, 0.36
0.7, 0.7, 0.59
0.7, 0.7, 0.86
-0.51, -1.68, -1.53
-0.51, -1.68, -1.30
-0.51, -1.68, -1.11
-0.51, -1.68, -0.95
-0.51, -1.68, -0.78
1.32
1.42
1.51
1.59
1.66
6
7
8
9
7
7
7
7
62, 50, 98
62, 50, 144
62, 50, 179
62, 50, 223
64, 101, 150
64, 101, 161
64, 101, 202
64, 101, 227
0.7, 0.7, 0.24
0.7, 0.7, 0.45
0.7, 0.7, 0.66
0.7, 0.7, 0.91
-0.47, -1.74, -1.34
-0.47, -1.74, -1.09
-0.47, -1.74, -0.92
-0.47, -1.74, -0.69
2.03
2.16
2.28
2.4
* Gate and control voltages should be adjusted to reach target drain currents and optimal
eye performance and may vary from above voltages.
3
TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504 info-networks@tqs.com
May 2011 © Rev E
TGA4943-SL
Table III
RF Characterization Table
Bias: Vd = 7 V, Idq=310 mA, Vc1, Vc2 = +0.7 V, Vc3 = +0.8 V, typical
Small Signal Characteristics*
SYMBOL
Gain
PARAMETER
Small Signal Gain
TEST
CONDITIONS
f = 0.1 - 18 GHz
f = 18.1 - 29 GHz
f = 29.1 - 32 GHz
f = 32.1 - 36 GHz
f = 36.1 – 40 GHz
f = 0.1 - 30 GHz
f = 30.1 - 34 GHz
f = 34.1 – 40 GHz
f = 0.1 - 22 GHz
f = 22.1 - 30 GHz
f = 30.1 – 40 GHz
f(x) – f(1 GHz) = 3 dB
x = freq of 3 dB BW
MIN
30
27.5
25
21
17
10
5
3
10
6.5
3
-
NOMINAL
32
30
28
25
21
15
8
6
15
8
6
27
MAX
-
-
-
-
-
-
-
-
-
UNITS
dB
IRL
Input Return Loss
dB
ORL
Output Return Loss
dB
BW
3 dB Bandwidth
GHz
* NOTE: data includes DC block on input, external bias tee on output, and 2.4
mm RF connectors on input and output
4
TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504 info-networks@tqs.com
May 2011 © Rev E
TGA4943-SL
Table III - Cont.
RF Characterization Table
Bias: Vd = 7 V, Idq ~ 300 mA, Vc1, Vc2 = 0.6 V, Vc3 = 0.8 V, typical
Electrical Eye Test Conditions: Vin = 0.5 Vpp, PRBS 2
31
-1, 21.5 Gbps, Crossing = 50% +/- 2%
SYMBOL
Vout_Max
Tr
Tf
SNR
Eye Opening
Jrms_Add
Jpp
Id
PARAMETER
Maximum Eye
Amplitude
Risetime
Falltime
Signal to Noise
Ratio
1/
Additive
Jitter 2/
P-P Jitter
Total Drain Current
TEST
CONDITIONS
500 mVpp Input
8 Vpp Output
8 Vpp Output
8 Vpp Output
8 Vpp Output
8 Vpp Output
8 Vpp Output
8 Vpp Output
MIN
-
-
NOMINAL
10
12
12
MAX
-
14
14
UNITS
Vpp
psec
psec
dB
%
14.5
20
85
500
6
850
7.8
-
fsec
psec
mA
-
350
1/
Eye Opening defined as: [ Eye Height (Vpp)/Eye Amplitude (Vpp)] *100
2/
Additive Jitter defined as: Sqrt [(Total RMS Jitter)^2 – (Input RMS Jitter)^2]
5
TriQuint Semiconductor: www. triquint.com (972)994-8465 Fax (972)994-8504 info-networks@tqs.com
May 2011 © Rev E
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