参数资料
| 型号： | MIC3003GML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 27/75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?（4x4） |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
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Micrel, Inc.
Configuration Bits
MIC3003
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
Figure 8. V MOD Configured as Voltage Output
with Gain
Power On and Laser Start-Up
When power is applied, the MIC3003 initializes its
OE
0
1
1
MODREF
Don’t Care
0
1
V MOD
Hi-Z
GND
VDD
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 MIC3003’s 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.
November 2009
27
M9999-111209-C
hbwhelp@micrel.com or (408) 955-1690
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