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1. General description
CAUTION
2. Features
3. Applications
TZA3046
Fiber Channel/Gigabit Ethernet transimpedance amplifier
Rev. 01 — 19 May 2006
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.
This device is sensitive to ElectroStatic Discharge (ESD). Therefore care should be taken
during transport and handling.
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Low equivalent input noise current, typically 126 nA (RMS)
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Wide dynamic range, typically 2.5 A to 1.7 mA (p-p)
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Differential transimpedance of 7.5 k (typical)
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Bandwidth from DC to 1050 MHz (typical)
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Differential outputs
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On-chip AGC with possibility of external control
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Single supply voltage 3.3 V, range 2.97 V to 3.6 V
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Bias voltage for PIN diode
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On-chip current mirror of average photo current for RSSI monitoring
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Identical ports available on both sides of die for easy bond layout and RF polarity
selection
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Digital fiber optic receiver modules in telecommunications transmission systems, in
high-speed data networks or in FTTx systems.
Product data sheet
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Related Manuals for Philips TZA3046
Summary of Contents for Philips TZA3046
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Page 1: General Description
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 it to a differential output voltage. -
Page 2: Ordering Information
Rev. 01 — 19 May 2006 TZA3046 1.3 mm 6 or 15 TZA3046 BIASING PEAK DETECTOR output buffers 9, 10, 11, 12 © Koninklijke Philips Electronics N.V. 2006. All rights reserved. Version 7 or 13 OUTQ 8 or 14 001aae511 2 of 15... -
Page 3: Pinning Information
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 OUTQ 001aae512 © Koninklijke Philips Electronics N.V. 2006. All rights reserved. 3 of 15... -
Page 4: Functional Description
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 2.5 A to 1.7 mA (p-p). This is implemented by an AGC loop which reduces the preamplifier feedback resistance so that the amplifier remains... - Page 5 4 or 17 R DREF DREF 1 or 3 IPHOTO 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. 5 of 15...
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Page 6: Automatic Gain Control
Philips Semiconductors 7.2 Automatic gain control The TZA3046 transimpedance amplifier can handle input currents from 2.5 A to 1.7 mA which is equivalent to a dynamic range of 56 dB (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. -
Page 7: Monitoring Rssi Via Idref_Mon
This is depicted in for proper functioning. transimpedance (k ) bias resistor. By connecting a resistor to the IDREF_MON Rev. 01 — 19 May 2006 TZA3046 Figure 7. The 001aae517 bias © Koninklijke Philips Electronics N.V. 2006. All rights reserved. 7 of 15... -
Page 8: Limiting Values
Rev. 01 — 19 May 2006 2.97 = 100 ; IDREF_MON = 100 1050 © Koninklijke Philips Electronics N.V. 2006. All rights reserved. TZA3046 Unit +3.8 +2.0 + 0.5 V + 0.5 V + 0.5 V +4.0... - Page 9 = 1250 A (p-p) Rev. 01 — 19 May 2006 0.33 [2][3] 1000 +1700 19.5 = 100 = 100 © Koninklijke Philips Electronics N.V. 2006. All rights reserved. TZA3046 Unit 1000 0.4 V 20.5 nA/ C 1.2 - 9 of 15...
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Page 10: Application Information
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 TZA3046U OUTQ © Koninklijke Philips Electronics N.V. 2006. All rights reserved. 001aae518 10 of 15... -
Page 11: Test Information
S-PARAMETER TEST SET PORT1 PORT2 = 50 = 50 4 or 17 22 nF 8 or 14 TZA3046 IPHOTO 22 nF OUTQ 7 or 13 9, 10, 11, 12 (R + Z 2, where s is the insertion loss of ports 1 and 2. -
Page 12: Bare Die Information
Rev. 01 — 19 May 2006 TZA3046 (0,0) 001aac627 100 m) except pads 2 and 3 which have exposed 80 m (pad size = 90 m 90 m) © Koninklijke Philips Electronics N.V. 2006. All rights reserved. 90 m 12 of 15... -
Page 13: Handling Information
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. 13 of 15... -
Page 14: Legal Information
(90) days from the date of delivery by Philips Semiconductors. If there are data sheet limits not guaranteed, these will be separately indicated in the data sheet. -
Page 15: Table Of Contents
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...