- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362306 > AMC1210IRHAR Quad Digital Filter for 2nd-Order Delta-Sigma Modulator PDF資料下載
參數(shù)資料
| 型號： | AMC1210IRHAR |
| 英文描述： | Quad Digital Filter for 2nd-Order Delta-Sigma Modulator |
| 中文描述： | 四數(shù)字濾波器2階Δ-Σ調(diào)制器 |
| 文件頁數(shù)： | 24/47頁 |
| 文件大?。?/td> | 805K |
| 代理商： | AMC1210IRHAR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當(dāng)前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁
www.ti.com
CONTROL AND INTERRUPT MODULE
Signal Generator Unit
The signal generator (see
Figure 20
) provides a 5V Pulse Width Modulated (PWM) signal at pin PWM1 and a
complementary signal at PWM2. The output of PWM1 to PWM2 is a ±5V differential signal that can be externally
low-pass-filtered to generate a carrier signal with a predefined clock frequency.
PATTERN REGISTER
BIT 0
BIT 15
WORD 0
WORD 63
DIRECTION OF DATA OUTPUT FLOW
DIRECTION OF DATA SHIFT WHEN LOADING
SHIFT REGISTER
Calibrating the Signal Generator
AMC1210
SBAS372A–APRIL 2006–REVISED OCTOBER 2006
The control and interrupt module consists of a Signal Generator unit, a comprehensive interrupt unit and a
register map. The register map contains all control parameters, output data and status bits for the AMC1210. A
detailed description of each register is available in the
Register Map
section.
The signal generator is a shift register with a length between 1 and 1024. The shift register is programmed
through the
Pattern Register
(bits SP). On the first write command to the bits SP, the first 16 bits of the shift
register are loaded. Each following write command causes the data in the shift register to shift 16 bits
upwards
,
and the 16 bits from the
Pattern Register
are placed in the LSBs of the shift register. For example, if 874 bits of
predefined pattern are to be stored in the shift register, 55 writes to the
Pattern Register
must be issued (with
MSB first and LSB last), and the value 873 must be written into the bits PC in the
Control Register
.
Figure 20. AMC1210 Signal Generator Unit
The output data rate of the signal generator is programmed with the
Clock Divider Register
(bits SD). The output
data rate can be selected to be an integer division of the CLK rate. For example, if the CLK pin is operating at
40MHz with the bits SD = 4, the bit rate of the signal generator is 10MHz. The length of the pattern can be
programmed with the
Control Register
(bits PC). A length can be chosen between 1 and 1024 bits. This signal is
designed for use as the carrier frequency in resolver applications, where proper demodulation requires a
completely synchronous clock to the carrier timing.
The Signal Generator unit also must be in phase with the total system for resolver demodulation. This condition
requires a calibration to align the phase of the Signal Generator output to the sinc filter output. The phase
calibration begins when the bit PCAL in the
Clock Divider Register
is set high. The AMC1210 performs the
calibration by monitoring the polarity of both the output of the signal generator and the sinc filter. Once the
polarities are defined, a demodulation signal is generated with the corresponding phase shift.
The bit PCAL controls demodulation. Initially, it is set high. The AMC1210 then outputs a low on bit PCAL when
the modulation is performed correctly. The microcontroller can monitor the calibration by reading PCAL. The first
calibration attempt will try to calibrate for one period of the Signal Generator. If PCAL stays high after that
period, then calibration has failed. In order to restart calibration, a low must be written to PCAL in order to reset
the PCAL state. Writing a subsequent high starts the calibration over.
24
Submit Documentation Feedback
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AMC1210IRHARG4 | Quad Digital Filter for 2nd-Order Delta-Sigma Modulator |
| AMC1210IRHAT | Quad Digital Filter for 2nd-Order Delta-Sigma Modulator |
| AMC1210IRHATG4 | Quad Digital Filter for 2nd-Order Delta-Sigma Modulator |
| AMC142SMA | Industrial Control IC |
| AMC7820 | Analog Monitoring and Control Circuitry |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AMC1210IRHARG4 | 功能描述:有源濾波器 4Ch Dig Filter RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| AMC1210IRHAT | 功能描述:有源濾波器 4 Ch Dig Filter for ADS120X RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| AMC1210IRHATG4 | 功能描述:有源濾波器 4Ch Dig Filter RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube |
| AMC1210MB-EVM | 功能描述:有源濾波器開發(fā)工具 AMC1210 Mother Board RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 工具用于評估:MAX7408-MAX7415, MAX7418-MAX7425 截止頻率:1 Hz to 15 kHz 工作電源電壓:3 V, 5 V |
| AMC-123 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:High Performance Amplifier |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。