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ADN2871 Datasheet(PDF) 4 Page - Analog Devices

No. de Pieza. ADN2871
Descripción  3.3 V, 50 Mbps to 4.25 Gbps Single-Loop Laser Diode Driver
Descarga  20 Pages
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Fabricante  AD [Analog Devices]
Página de inicio  http://www.analog.com
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ADN2871 Datasheet(HTML) 4 Page - Analog Devices

 
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ADN2871
Rev. 0 | Page 4 of 20
Parameter
Min
Typ
Max
Unit
Conditions/Comments
ALARM OUTPUT (FAIL)9
VOFF
>1.8
V
Voltage required at FAIL for
IBIAS and IMOD to turn off
when FAIL asserted
VON
<1.3
V
Voltage required at FAIL for
IBIAS and IMOD to stay on
when FAIL asserted
IBMON, IMMON DIVISION RATIO
IBIAS/IBMON3
76
94
112
A/A
2 mA < IBIAS < 11 mA
IBIAS/IBMON3
85
100
115
A/A
11 mA < IBIAS < 50 mA
IBIAS/IBMON3
92
100
108
A/A
50 mA < IBIAS < 100 mA
IBIAS/IBMON STABILITY3, 10
±5
%
10 mA < IBIAS < 100 mA
IMOD/IMMON
42
A/A
IBMON Compliance Voltage
0
1.3
V
SUPPLY
ICC11
32
mA
When IBIAS = IMOD = 0
VCC (with respect to GND)12
3.0
3.3
3.6
V
1 Temperature range: –40°C to +85°C.
2 Measured into a single-ended 15 Ω load (22 Ω resistor in parallel with digital scope 50 Ω input) using a 1111111100000000 pattern at 2.5 Gbps, shown in Figure 2.
3 Guaranteed by design and characterization. Not production tested.
4 Measured into a single-ended 15 Ω load using a K28.5 pattern at 2.5 Gbps, shown in Figure 2.
5 Measured into a differential 30 Ω (43 Ω differential resistor in parallel with a digital scope of 50 Ω input) load using a 1111111100000000 pattern at 4.25 Gbps, as
shown in Figure 3.
6 Measured into a differential 30 Ω load using a K28.5 pattern at 4.25 Gbps, as shown in Figure 3.
7 Measured into a differential 30 Ω load using a K28.5 pattern at 2.7Gbps, as shown in Figure 3.
8 When the voltage on DATAP is greater than the voltage on DATAN, the modulation current flows in the IMODP pin.
9 Guaranteed by design. Not production tested.
10 IBIAS/IBMON ratio stability is defined in SFF-8472 Revision 9 over temperature and supply variation.
11 See the ICC minimum for power calculation in the Power Consumption section.
12 All VCC pins should be shorted together.
ADN2871
IMODP
BIAS TEE
80kHz
→ 27GHz
VCC
VCC
TO HIGH SPEED
DIGITAL
OSCILLOSCOPE
50
Ω INPUT
R
22
C
L
Figure 2. High Speed Electrical Test Single-Ended Output Circuit
ADN2871
IMODN
BIAS TEE
80kHz
→ 27GHz
VCC
TO HIGH SPEED
DIGITAL
OSCILLOSCOPE
50
Ω DIFFERENTIAL INPUT
R
43
C
L
VCC
IMODP
L
C
BIAS TEE
80kHz
→ 27GHz
Figure 3. High Speed Electrical Test Differential Output Circuit


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