Transimpedance Amplifier. TGA4805-EPU Datasheet


TGA4805-EPU Amplifier. Datasheet pdf. Equivalent


Part Number

TGA4805-EPU

Description

Differential Transimpedance Amplifier

Manufacture

TriQuint Semiconductor

Total Page 6 Pages
Datasheet
Download TGA4805-EPU Datasheet


TGA4805-EPU
Advance Product Information
May 23, 2002
10 GB/s Differential Transimpedance Amplifier TGA4805-EPU
Key Features
• 0.25 um pHEMT Technology
• Frequency Range; 30 KHz to > 11GHz
• 1000 Differential Transimpedance
• Average Input Eq. Noise: 9 pA / Hz
• Single Supply Operation: +5V @ 45 mA
• Chip Size: 1.1 x 0.91 mm
Primary Applications
Description
• OC192/STM-64 Fiber-Optic Systems
The TriQuint TGA4805-EPU is a
wideband transimpedance amplifier with
differential outputs that provides 500 Ohm
www.DataSheet4U.com single-ended transimpedance into a
50 Ohm termination (1000 Ohm
differential into a 100 Ohm termination).
Typical output return loss is > 15 dB and
the average equivalent input noise current
is 9 pA/ Hz (1 GHz to 10 GHz). Typical
3dB BW is 30 KHz to 11GHz with 0.2 pF
of photodiode capacitance.
The TGA4805 operates from a single +5V
supply typically dissipating 225mW of DC
power. The device is backside grounded
with vias and requires no grounding bond
wires.
Typical Measured Performance
63 0
60 -3
57
Differential TZ (dB-Ohm)
54 S22 Inverting Output
51 S22 Noninverting Output
48
-6
-9
-12
-15
45 -18
42 -21
39 CPD = 0.2 pF
36 RPD = 10 Ohm
33
135
7
-24
-27
-30
9 11 13 15
Frequency (GHz)
60
CPD = 0.2 pF
50 RPD = 10 Ohm
40
The TGA4805 requires off-chip decoupling
and the RF ports are DC coupled. Each
device is 100% RF tested on-wafer to
ensure performance compliance. The
device is available in die form.
30
20
10
0
-10
1 3 5 7 9 11 13 15
Frequency (GHz)
Note: Devices designated as EPU are typically early in their characterization process prior to finalizing all electrical and process
specifications. Specifications are subject to change without notice.
TriQuint Semiconductor Texas : Phone (972)994-8465 Fax (972)994 8504 Web: www.triquint.com
1

TGA4805-EPU
Advance Product Information
May 23, 2002
TGA4805-EPU
TABLE I
MAXIMUM RATINGS
Symbol
V+
I+
PD
PIN
TCH
TM
TSTG
Parameter 1/
Positive Supply Voltage
Positive Supply Current
Power Dissipation
Input Continuous Wave Power
Operating Channel Temperature
Mounting Temperature (30 seconds)
Storage Temperature
Value
+6.0V
60 mA
360 mW
+15 dBm
150 °C
320 °C
-65 °C to 150 °C
Notes
2/
3/, 4/
1/ These values represent the maximum operable values of this device
2/ Total current for the entire MMIC
3/ These ratings apply to each individual FET
4/ Junction operating temperature will directly affect the device mean time to failure
(MTTF). For maximum life it is recommended that junction temperatures be
maintained at the lowest possible levels.
TABLE II
ELECTRICAL CHARACTERISTICS
(Ta = 25oC ± 5oC)
Vd = 5V
P aram eter
T ransim peda nce
T ransim peda nce R ipple
U pper 3 dB B a ndw id th
L ow er 3 dB B a ndw id th*
G roup D elay R ipple
E q. Inp ut N oise C urrent
O utput R eturn Loss
U nits
dB
dBpp
GHz
kHz
ps
pA /H z
dB
C ondition
S ingle -ende d, R L= 50
1 G H z to 10 G H z
C PD =0.2pF, R PD =10
C PD =0.2pF, R PD =10
C PD =0.2pF, R PD =10
1 G H z to 8 G H z
C PD =0.2pF, R PD =10
Ave: 1 G H z to 10 G H z
C PD =0.2pF
30 KH z to 12 G H z
T y p ic a l
54
2
11
30
+10
9
15
S upply V oltage
S upply C urren t
V
mA
5 .0
45
* Set by off-chip capacitance
Note: Electrical parameters are calculated for a photodiode equivalent circuit of 0.2pF and 10
Note: Devices designated as EPU are typically early in their characterization process prior to finalizing all electrical and process
specifications. Specifications are subject to change without notice.
TriQuint Semiconductor Texas : Phone (972)994-8465 Fax (972)994 8504 Web: www.triquint.com
2


Features Advance Product Information May 23, 2002 10 GB/s Differential Transimpedance A mplifier Key Features • • • • • TGA4805-EPU 0.25 um pHEMT Tech nology Frequency Range; 30 KHz to > 11G Hz 1000 Ω Differential Transimpedance Average Input Eq. Noise: 9 pA / √ Hz Single Supply Operation: +5V @ 45 mA C hip Size: 1.1 x 0.91 mm Primary Applic ations Description The TriQuint TGA4805 -EPU is a wideband transimpedance ampli fier with differential outputs that pro vides 500 Ohm single-ended transimpedan ce into a 50 Ohm termination (1000 Ohm differential into a 100 Ohm termination ). Typical output return loss is > 15 d B and the average equivalent input nois e current is 9 pA/ √ Hz (1 GHz to 10 GHz). Typical 3dB BW is 30 KHz to 11GHz with 0.2 pF of photodiode capacitance. The TGA4805 operates from a single +5V supply typically dissipating 225mW of DC power. The device is backside ground ed with vias and requires no grounding bond wires. The TGA4805 requires off-chip decoupling and the RF ports are DC coup.
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