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參數(shù)資料
| 型號(hào)： | MAX2112 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Complete, Direct-Conversion Tuner for DVB-S2 Applications |
| 中文描述： | 完備的直接變頻調(diào)諧器，用于DVB-S2系統(tǒng) |
| 文件頁數(shù)： | 11/19頁 |
| 文件大小： | 313K |
| 代理商： | MAX2112 |
M
Complete, Direct-Conversion
Tuner for DVB-S2 Applications
______________________________________________________________________________________
11
Table 8. PLL Register
BIT NAME
BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
D24
7
1
VCO divider setting.
0 = Divide by 2.
1 = Divide by 4 (default).
CPS
6
0
Charge-pump current mode. Users must program to 0 upon powering up the
device.
0 = Charge-pump current controlled by ICP bit.
1 = Charge-pump current controlled by VCO autoselect (VAS).
ICP
5
0
Charge-pump current. Users must program to 1 upon powering up the
device.
0 = 600μA typical.
1 = 1200μA typical.
X
4–0
X
Don’t care.
Table 9. VCO Register
BIT NAME
BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
VCO[4:0]
7–3
11001
C ontr ol s w hi ch V C O i s acti vated w hen usi ng m anual V C O p og am m ng m od e.
Thi s al so ser ves as the star i ng p oi nt for the V C O autosel ecti on ( V AS m od e.
VAS
2
1
VCO autoselection (VAS) circuit.
0 = Disable VCO selection must be programmed through I
2
C.
1 = Enable VCO selection controlled by autoselection circuit.
ADL
1
0
Enables or disables the VCO tuning voltage ADC latch when the VCO
autoselect mode (VAS) is disabled.
0 = Disables the ADC latch.
1 = Latches the ADC value.
ADE
0
0
Enables or disables VCO tuning voltage ADC read when the VCO autoselect
mode (VAS) is disabled.
0 = Disables ADC read.
1 = Enables ADC read.
Table 10. Lowpass Filter Register
BIT NAME
BIT LOCATION (0 = LSB)
DEFAULT
FUNCTION
LPF[7:0]
7–0
01001011
Sets the baseband lowpass filter 3dB corner frequency.
f
-3dB
= 4MHz + (LPF[3:0]
dec
- 12) x 290kHz.
Default value equates to f
-3dB
= 22.27MHz typical.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2112_10 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Complete, Direct-Conversion Tuner for DVB-S2 Applications |
| MAX2112CTI+ | 功能描述:調(diào)諧器 Direct Conv Tuner Tuner for DVB-S2 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| MAX2112CTI+T | 功能描述:調(diào)諧器 Direct Conv Tuner Tuner for DVB-S2 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| MAX2112ETI/GG8 | 制造商:Maxim Integrated Products 功能描述:COMPLETE, DIRECT-CONVERSION TUNER FOR DVB-S2 APPLICATIONS - Rail/Tube |
| MAX2112ETI+ | 功能描述:調(diào)諧器 Direct Conv Tuner Tuner for DVB-S2 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
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