tza3046 NXP Semiconductors, tza3046 Datasheet

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tza3046

Manufacturer Part Number
tza3046
Description
Tza3046 Fiber Channel/gigabit Ethernet Transimpedance Amplifier
Manufacturer
NXP Semiconductors
Datasheet
1. General description
2. Features
3. Applications
CAUTION
The TZA3046 is a transimpedance amplifier with Automatic Gain Control (AGC), designed
to be used in Fiber Channel/Gigabit Ethernet (FC/GE) fiber optic links. It amplifies the
current generated by a photo detector (PIN diode or avalanche photodiode) and converts
it to a differential output voltage. It offers a current mirror of average photo current for
RSSI monitoring to be used in SFF-8472 compliant modules.
The low noise characteristics makes it suitable for FC/GE applications, but also for
FTTx applications.
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TZA3046
Fiber Channel/Gigabit Ethernet transimpedance amplifier
Rev. 01 — 19 May 2006
Low equivalent input noise current, typically 126 nA (RMS)
Wide dynamic range, typically 2.5 A to 1.7 mA (p-p)
Differential transimpedance of 7.5 k (typical)
Bandwidth from DC to 1050 MHz (typical)
Differential outputs
On-chip AGC with possibility of external control
Single supply voltage 3.3 V, range 2.97 V to 3.6 V
Bias voltage for PIN diode
On-chip current mirror of average photo current for RSSI monitoring
Identical ports available on both sides of die for easy bond layout and RF polarity
selection
Digital fiber optic receiver modules in telecommunications transmission systems, in
high-speed data networks or in FTTx systems.
This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken
during transport and handling.
Product data sheet

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tza3046 Summary of contents

Page 1

... Fiber Channel/Gigabit Ethernet transimpedance amplifier Rev. 01 — 19 May 2006 1. General description The TZA3046 is a transimpedance amplifier with Automatic Gain Control (AGC), designed to be used in Fiber Channel/Gigabit Ethernet (FC/GE) fiber optic links. It amplifies the current generated by a photo detector (PIN diode or avalanche photodiode) and converts differential output voltage ...

Page 2

... DREF GAIN CONTROL single-ended to differential converter low noise amplifier Rev. 01 — 19 May 2006 TZA3046 1.3 mm AGC TZA3046 BIASING PEAK DETECTOR output buffers 9, 10, 11, 12 GND © Koninklijke Philips Electronics N.V. 2006. All rights reserved. Version - OUTQ OUT 001aae511 ...

Page 3

... OUT; use pad 7 or pad 13 data output; use pad 8 or pad 14 ground; connect together pads 9, 10, 11 and pad 12 as many as possible ground; connect together pads 9, 10, 11 and pad 12 as many as possible Rev. 01 — 19 May 2006 TZA3046 IDREF_MON ...

Page 4

... Excellent receiver sensitivity is achieved by minimizing transimpedance amplifier noise. The TZA3046 has a wide dynamic range to handle the signal current generated by the PIN diode which can vary from 2 1.7 mA (p-p). This is implemented by an AGC loop which reduces the preamplifier feedback resistance so that the amplifier remains linear over the whole input range ...

Page 5

... DREF Figure DREF DREF 290 IPHOTO 2 I PIN TZA3046 negative bias voltage 001aae514 Fig 4. The PIN diode connected between the input and a negative supply voltage © Koninklijke Philips Electronics N.V. 2006. All rights reserved. can ...

Page 6

... Philips Semiconductors 7.2 Automatic gain control The TZA3046 transimpedance amplifier can handle input currents from 2 1.7 mA which is equivalent to a dynamic range (electrical equivalent with 28 dB optical). At low input currents, the transimpedance must be high to obtain enough output voltage, and the noise should be low enough to guarantee a minimum bit error rate. At high input currents however, the transimpedance should be low to prevent excessive distortion at the output stage. To achieve the dynamic range, the gain of the amplifi ...

Page 7

... Fiber Channel/Gigabit Ethernet transimpedance amplifier gives minimum transimpedance. This is depicted in CC for proper functioning transimpedance ( 0.3 0.5 bias resistor. By connecting a resistor to the IDREF_MON Rev. 01 — 19 May 2006 TZA3046 Figure 7. The 001aae517 0.7 0 AGC CC bias © Koninklijke Philips Electronics N.V. 2006. All rights reserved ...

Page 8

... Min Typ 2.97 3.3 = 100 ; - 21 IDREF_MON - +25 5.5 7.5 = 100 800 1050 [1] - 126 - 125 © Koninklijke Philips Electronics N.V. 2006. All rights reserved. TZA3046 Max Unit +3 +4.0 mA +10 mA +0.2 mA +4.0 mA 300 mW +85 C 150 C +150 C Max Unit 3 +125 ...

Page 9

... 100 120 [4] - 325 - 100 - 150 - 150 © Koninklijke Philips Electronics N.V. 2006. All rights reserved. TZA3046 Max Unit 320 - / 1000 nA 600 ...

Page 10

... Fig 8. Application diagram highlighting flexible pad lay out TZA3046_1 Product data sheet Fiber Channel/Gigabit Ethernet transimpedance amplifier Figure IDREF_MON IDREF_MON OUTQ Rev. 01 — 19 May 2006 TZA3046 PIN C TZA3046U OUTQ OUT GND © Koninklijke Philips Electronics N.V. 2006. All rights reserved. 001aae518 ...

Page 11

... Fig 9. Test circuit NETWORK ANALYZER S-PARAMETER TEST SET PORT1 PORT2 OUT 8.2 k TZA3046 330 IPHOTO OUTQ 10, 11, 12 GND = where s is the insertion loss of ports 1 and 2. tot(tc SAMPLING OSCILLOSCOPE ...

Page 12

... PSG (PhosphoSilicate Glass) on top of 0.8 m silicon nitride minimum dimension of exposed metallization (pad size = 100 m metallization 2.8 m AlCu 380 m nominal 820 m 1300 silicon; electrically connected to GND potential through substrate contacts < 440 C; recommended die attach is glue < Rev. 01 — 19 May 2006 TZA3046 (0, ...

Page 13

... Received Signal Strength Indicator Synchronous Digital Hierarchy Small Form-factor Pluggable Synchronous Optical NETwork Synchronous Transport Module 1 (155.52 Mbit/s Data sheet status Product data sheet Rev. 01 — 19 May 2006 TZA3046 Change notice Supersedes - - © Koninklijke Philips Electronics N.V. 2006. All rights reserved ...

Page 14

... Philips Semiconductors through its legal department. 17.4 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. Rev. 01 — 19 May 2006 TZA3046 © Koninklijke Philips Electronics N.V. 2006. All rights reserved ...

Page 15

... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © Koninklijke Philips Electronics N.V. 2006. For more information, please visit: http://www.semiconductors.philips.com. For sales office addresses, email to: sales.addresses@www.semiconductors.philips.com. TZA3046 All rights reserved. Date of release: 19 May 2006 Document identifier: TZA3046_1 ...

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