- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383345 > MAX2140 (Maxim Integrated Products, Inc.) Complete SDARS Receiver PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX2140 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Complete SDARS Receiver |
| 中文描述： | 完備的SDARS接收器 |
| 文件頁(yè)數(shù)： | 11/12頁(yè) |
| 文件大?。?/td> | 162K |
| 代理商： | MAX2140 |
M
Complete S DARS Rec eiver
______________________________________________________________________________________
11
F19 to F16 is the upper-part binary-written main
dividing ratio, fractional part multiplied by 2
20
=
1,048,576.
BYTES PLLfrac1 and PLLfrac0:
F15 to F0 is the lower-part binary-written main divid-
ing ratio, fractional part multiplied by 2
20
= 1,048,576.
BYTE Control:
REF = reference division ratio: REF = 0 (/1) and REF
= 1 (/2)
CHP = charge-pump current: CHP = 0 (0.6mA) and
CHP = 1 (1.2mA)
D48 = LO division ratio: D48 = 0 (/4) and D48 = 1 (/8)
SDR = shutdown RF AGC: SDR = 0 (on) and SDR =
1 (shutdown)
ANT = antenna overcurrent protection: ANT = 0 (on)
and ANT = 1 (shutdown)
SDF = shutdown front end: SDF = 0 (on) and SDF =
1 (shutdown)
SDB = shutdown back end: SDB = 0 (on) and SDB =
1 (shutdown)
SDP = shutdown PLL: SDP = 0 (on) and SDP = 1
(shutdown)
BYTE CustomGain:
RF4/RF3/RF2/RF1/RF0 = RF AGC engagement
threshold (dBm): see the RF AGC Settling Time
graph in the
Typical Operating Characteristics.
LP1/LP0 = change by 250kHz the LPF corner fre-
quency: LP1/LP0 = 10 (nominal), LP1/LP0 = 11
(decrease), LP1/LP0 = 00 (increase)
HPF = HPF gain increase by 4dB: HPF = 0 (off) and
HPF = 1 (on)
BYTE PMA_Test:
PM3/PM2/PM1/PM0 = PMA gain cutback (dB):
PM3/PM2/PM1/PM0
DEC
SDX = shutdown reference buffer: SDX = 0 (on) and
SDX = 1 (shutdown)
T2/T1/T0 = test bits: 000 (normal), 001 (main divi-
sion), 010 (reference division), 011 (reserved),
100 (CHP low-Z), 101 (CHP source on), 110 (CHP
sink on), 111 (CHP high-Z)
BYTE LPFTrim:
B4/B3/B2/B2A/B1 = Reserved for LPF trim. All = 0 in
normal operating mode
IOT = LPF corner frequency setup: IOT = 0 (default
factory trim) and IOT = 1 (controllable through I
2
C).
IOT = 0 in normal operating mode
BYTE Status:
RF AGC = RF AGC status: RF AGC = 0 (is not
engaged) and RF AGC = 1 (engaged)
ACP = antenna current protection: ACP = 0 (no over-
current) and ACP = 1 (overcurrent)
AND = antenna detection: ANT = 0 (current < thresh-
old) and ANT = 1 (current > threshold)
LD = lock detect: LD = 0 (out of lock) and LD = 1
(lock)
BYTE Reserved:
Inactive at this time, all bits are 0
Register configuration for the LO generation
when the comparison frequency = 23.92MHz:
to generate 2078.893333MHz:
PLLint = 01010110, PLLfrac2 = 00011110,
PLLfrac1= 10010000, PLLfrac0 = 01101001
to generate 2067.777778MHz:
PLLint = 01010110, PLLfrac2 = 00010111,
PLLfrac1 = 00100001, PLLfrac0 = 00000010
to generate 1871.004000 MHz:
PLLint = 01001110, PLLfrac2 = 00010011,
PLLfrac1 = 10000001, PLLfrac0 = 11111000
to generate 1861.000000MHz:
PLLint = 01001101, PLLfrac2 = 00011100,
PLLfrac1 = 11010000, PLLfrac0 = 11101000
READ-FROM MODE
RESET VALUE
ADDRESS (hex)
MSB
CONTROL BYTE
LSB
Address
—
C3
C5
C7
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
1
1
0
1
1
1
1
Reserved
Status
00000000
00000000
00
01
0
0
0
0
0
0
0
0
0
0
0
0
RFAGC
ACP
AND
LD
Table 4. MAX2140 Read Programming Bits
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX2140ETH | Complete SDARS Receiver |
| MAX214EPI | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| MAX212 | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| MAX214EWI | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| MAX214 | 16-Bit Buffers/Drivers With 3-State Outputs 48-TVSOP -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2140_05 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Complete SDARS Receiver |
| MAX2140_1 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kit |
| MAX2140ETH | 功能描述:通信集成電路 - 若干 RoHS:否 制造商:Maxim Integrated 類型:Transport Devices 封裝 / 箱體:TECSBGA-256 數(shù)據(jù)速率:100 Mbps 電源電壓-最大:1.89 V, 3.465 V 電源電壓-最小:1.71 V, 3.135 V 電源電流:50 mA, 225 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| MAX2140ETH+ | 功能描述:射頻接收器 Complete SDARS Receiver RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
| MAX2140ETH+CK3 | 功能描述:通信集成電路 - 若干 Complete SDARS Receiver RoHS:否 制造商:Maxim Integrated 類型:Transport Devices 封裝 / 箱體:TECSBGA-256 數(shù)據(jù)速率:100 Mbps 電源電壓-最大:1.89 V, 3.465 V 電源電壓-最小:1.71 V, 3.135 V 電源電流:50 mA, 225 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。