参数资料
| 型号： | MIC3003GFL TR |
| 厂商： | Micrel Inc |
| 文件页数： | 27/74页 |
| 文件大小： | 0K |
| 描述： | IC FOM MANAGEMENT W/CALIBR 24MLF |
| 标准包装： | 1,000 |
| 类型： | 激光二极管控制器（光纤） |
| 数据速率： | 10Gbps |
| 通道数： | 1 |
| 电源电压： | 3 V ~ 3.6 V |
| 电流 - 电源： | 2.3mA |
| 工作温度： | -40°C ~ 105°C |
| 封装/外壳： | 24-VFQFN 裸露焊盘，24-MLF? |
| 供应商设备封装： | 24-MLF?（3x3） |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
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Micrel, Inc.
Configuration Bits
MIC3003GFL
Shutdown State
OE
0
1
1
SPOL
Don’t Care
0
1
SHDN
Hi-Z
GND
VDD
Table 13. Shutdown State of SHDN vs.
Configuration Bits
C onfiguratio n Bits
V BIAS Shutdown State
OE
0
1
1
INV
Don’t Care
Don’t Care
Don’t Care
BIASREF
Don’t Care
0
1
V BIAS
Hi-Z
GND
VDD
Table 14. Shutdown State of V BIAS vs.
Configuration Bits
Configuration Bits
V MOD Shutdown State
OE
MODREF
V MOD
Figure 8. V MOD Configured as Voltage Output
with Gain
Power On and Laser Start-Up
0
1
1
Don’t Care
0
1
Hi-Z
GND
VDD
When power is applied, the MIC3003 initializes its
internal registers and state machine. This process takes
t POR , about 50ms. Following t POR , analog-to-digital
conversions begin, serial communication is possible, and
the POR bit and data ready bits may be polled. The first
set of analog data will be available t CONV after t POR .
MIC3003s are shipped from the factory with the output
enable bit, OE, set to zero, off. The power-up default
state, therefore, is APC off, V BIAS , V MOD , and SHDN
outputs disabled. V BIAS , V MOD , and SHDN will be floating
(high impedance) and the laser diode, if connected, will
be off. Once the device is incorporated into a transceiver
and properly configured, then the shutdown states of
SHDN, V BIAS , and V MOD will be determined by the state of
the APC configuration and OE bits. Tables 13, 14, and
15 illustrate the shutdown states of the various laser
control outputs versus the control bits.
Table 15. Shutdown State of V MOD vs.
Configuration Bits
In order to facilitate hot-plugging, the laser diode is not
turned on until t INIT2 after Power-On. Following t INIT2 , and
assuming TXDISABLE is not asserted, the DACs will be
loaded with their initial values. Since t CONV is much less
than t INIT2 , the first set of analog data, including
temperature, is available at t INIT2 . Temperature
compensation will be applied to the DAC values if
enabled. APC will begin if OE is asserted. (If the output
enable bit, OE, is not set, the V MOD , V BIAS , and SHDN
outputs will float indefinitely.) Figure 9 shows the power-
up timing of the MIC3003. If TXDISABLE is asserted at
power-up, the V MOD and V BIAS outputs will stay in their
shutdown states following MIC3003 initialization. A/D
conversions will begin, but the laser will remain off.
July 2010
27
M9999-072910-A
hbwhelp@micrel.com or (408) 955-1690
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