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| 型號(hào)： | ADN2891ACPZ-RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP LIM 16LFCSP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 放大器類型： | 限制 |
| 電路數(shù)： | 1 |
| 輸出類型： | 差分 |
| 電壓 - 輸入偏移： | 100µV |
| 電流 - 電源： | 45mA |
| 電壓 - 電源，單路/雙路(±)： | 2.9 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 95°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 16-LFCSP-VQ |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 788 (CN2011-ZH PDF) |
| 其它名稱： | ADN2891ACPZ-RL7DKR |
3.3 V, 3.2 Gbps,
Limiting Amplifier
ADN2891
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2005 Analog Devices, Inc. All rights reserved.
FEATURES
GENERAL DESCRIPTION
Input sensitivity: 4 mV p-p
The ADN2891 is a 3.2 Gbps limiting amplifier with integrated
loss-of-signal (LOS) detection circuitry and a received signal
strength indicator (RSSI). This part is optimized for SONET,
Gigabit Ethernet (GbE), and Fibre Channel optoelectronic
conversion applications. The ADN2891 has a differential input
sensitivity of 4 mV p-p and accepts up to a 2.0 V p-p differential
input overload voltage. The ADN2891 supports current mode
logic (CML) outputs with controlled rise and fall times.
80 ps rise/fall times
CML outputs: 700 mV p-p differential
Programmable LOS detector: 3.5 mV to 35 mV
Rx signal strength indicator (RSSI)
SFF-8472-compliant average power measurement
Single-supply operation: 3.3 V
Low power dissipation: 145 mW
Available in space-saving 3 mm × 3 mm, 16-lead LFCSP
By monitoring the bias current through a photodiode, the on-
chip RSSI detector measures the average power received with
2% typical linearity over the entire valid input range of the
photodiode. The on-chip RSSI detector facilitates SFF-8472-
compliant optical transceivers by eliminating the need for
external RSSI detector circuitry.
Extended temperature range: 40°C to +95°C
SFP reference design available
APPLICATIONS
SFP/SFF/GBIC optical transceivers
OC-3/OC-12/OC-48, GbE, Fibre Channel (FC) receivers
Additional features include a programmable loss-of-signal
(LOS) detector and output squelch.
10GBASE-LX4 transceivers
WDM transponders
The ADN2891 is available in a 3 mm × 3 mm, 16-lead LFCSP.
FUNCTIONAL BLOCK DIAGRAM
05244-
001
ADN2880
VREF
DRVCC
50
Ω
50
Ω
50
Ω
50
Ω
3k
Ω
PIN
NIN
PD_VCC
PD_CATHODE
ADN2891
RSSI/LOS
DETECTOR
0.01
μF
CAZ1
CAZ2
SQUELCH
AVCC
AVEE
DRVCC
DRVEE
THRADJ
OUTP
LOS
10k
Ω
+V
ADuC7020
RSSI_OUT
OUTN
Figure 1.
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