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PDF HMC690 Data sheet ( Hoja de datos )
| Número de pieza | HMC690 | |
| Descripción | 10 Gbps Transimpedance Amplifier Chip | |
| Fabricantes | Hittite Microwave Corporation | |
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v03.0908
HMC690
10 Gbps TRANSIMPEDANCE
AMPLIFIER
4
4-2
Typical Applications
The HMC690 is ideal for:
• SONET OC-192 and SDH STM-64 Transponders
• 10 Gbps Ethernet
• Broadband instrumentation
• Short, intermediate and long reach
optical receiver modules
Functional Diagram
Features
Supports data rates up to 11.3 Gbps
1.25 Kohm differential gain
+3.3 V single power supply
AC or DC coupled outputs
11 pA/√Hz input referred noise density
3 mA p-p overload
Average input power monitoring
Output offset adjustment
Die Size: 0.68 x 1.14 x 0.18mm
General Description
The HMC690 is 10 Gbps transimpedance amplifier
designed for SONET OC-192 / SDH STM-64, 10GbE
and 10Gbps systems employing optical amplifiers. It
supports data rates up to 11.3 Gbps. This amplifier
provides a differential output voltage that is proportional
to an applied current at its input port. This current is
typically provided by a photodiode. Operating from a
single +3.3V supply, the HMC690 features low input
referred noise, and is designed for driving a CDR or
a typical transceiver directly. The RSSI output can be
used for monitoring average input power. This device
also features a DC offset control, which enables
output signal level adjustment for asymmetrical
signals. Additional features include an integrated
300Ω filter resistor for photo-diode supply voltage and
an extended linear range[2] option.
Electrical Specifications, TA = +25° C, Vcc1 = Vcc2 = +3.3V [1]
Parameter
Conditions
Min. Typ.
AC Specifications
Max Data Rate
11.3
Small Signal Transimpedance (ZT)
Differential p-p @ 500 MHz
1.1
1.25
Output Amplitude Differential peak-to-peak
Small Signal Zt BW
For IIN > 1 mA
3-dB Upper LImit
430 500
7.5
Input Referred Noise Density
Noise Density @ 1 GHz
Noise Density @ 5 GHz
11.2
13.4
Input Referred RMS Noise
@ 8 GHz Bandwidth
1.0
Added p-p Deterministic Jitter
Random Jitter
Rise Time
IIN > 1 mA
20 - 80%
300
17 21
[1] Lin_en Open
[2] Please see Pin Description table for further explanation of the extended linear range option available on Pin 9.
Max.
1.55
560
13.5
14.7
10
500
25
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Units
Gbps
kOhm
mV
GHz
pA/√Hz
pA/√Hz
uA rms
ps
fs rms
ps
1 page  
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v03.0908
Supply Current vs. Supply Voltage
Over Temperature
120
110
100
90
4
80
70
60
3.1
+25C
+85C
- 55C
3.2 3.3 3.4
SUPPLY VOLTAGE (V)
3.5
HMC690
10 Gbps TRANSIMPEDANCE
AMPLIFIER
Optical Sensitivity Calculation
Optical sensitivity is determined from the input-referred rms noise current, IN. To achieve a bit error rate of 1E-12 , the
signal-to-noise ratio must be 14:1.
( )SNR IN re + 1
S = 10 log
2
x
ρx
x 1000
re - 1
dBm
Where
S
SNR
ρIN
re
= sensitivity (dBm)
= signal to noise ratio (dB)
= input-referred rms noise current (A)
= photodetector responsitivity (A/W)
= extinction ratio (dB)
Optical Minimum Output Swing at Sensitivity Limit Calculation
The typical optical sensitivity is -19 dBm. At the input level, the voltage swing at output of the HMC690 is calculated
as follows:
( )OMA re + 1
Save = 10 log
x
2 re - 1
Where
Save
OMA
= average sensitivity (dBm)
= optical modulation amplitude (Wp-p)
re = extinction ratio (dB)
4-6
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet HMC690.PDF ] | |
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