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參數(shù)資料
| 型號(hào)： | MAX1201 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Scan Test Devices With 18-Bit Bus Transceivers 56-TSSOP -40 to 85 |
| 中文描述： | +5V、單電源、2.2Msps、14位自校準(zhǔn)ADC |
| 文件頁(yè)數(shù)： | 8/16頁(yè) |
| 文件大小： | 187K |
| 代理商： | MAX1201 |
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M
+5V S ingle-S upply, 2.2Msps, 14-Bit
S elf-Calibrating ADC
8
_______________________________________________________________________________________
Detailed Desc ription
Converter Operation
The MAX1201 is a 14-bit, monolithic, analog-to-digital
converter (ADC) capable of conversion rates up to
2.2Msps. It uses a multistage, fully differential, pipe-
lined architecture with digital error correction and self-
calibration to provide 90dB (typ) spurious-free dynamic
range at a 2.2Msps sampling rate. Its signal-to-noise
ratio, harmonic distortion, and intermodulation products
are also consistent with 14-bit accuracy up to the
Nyquist frequency. This makes the device suitable for
applications such as xDSL, digital radio, instrumenta-
tion, and imaging.
Figure 1 shows the simplified, internal structure of the
ADC. A switched-capacitor pipelined architecture is
used to digitize the signal at a high throughput rate.
The first four stages of the pipeline use a low resolution
quantizer to approximate the input signal. The multiply-
ing digital-to-analog converter (MDAC) stage is used to
subtract the quantized analog signal from the input.
The residue is then amplified with a fixed gain and
passed on to the next stage. The accuracy of the con-
verter is improved by a digital calibration algorithm
which corrects for mismatches between the capacitors
in the switched capacitor MDAC. Note that the pipeline
introduces latency of four sampling periods between
the input being sampled and the output appearing at
D13–D0. While the device can handle both single-
ended or differential inputs (see
Requirements for
Reference and Analog Signal Inputs), the latter mode of
operation will guarantee best THD and SFDR perfor-
mance. The differential input provides the following
advantages compared to a single-ended operation:
Twice as much signal input span
Common-mode noise immunity
Virtual elimination of the even-order harmonics
Less stringent requirements on the input signal pro-
cessing amplifiers
Requirements for Referenc e
and Analog S ignal Inputs
Fully differential switched capacitor circuits (SC) are
used for both the reference and analog inputs (Figure
2). This allows either single-ended or differential signals
to be used in the reference and/or analog signal paths.
The signal voltage on these pins (INP, INN, RFP_,
RFN_) should neither exceed the analog supply rail,
AV
DD
nor fall below ground.
STAGE1
7
DAV
INP
INN
CM
AV
DD
RFN_
RFP_
AGND
CLK
DV
DD
DGND
DRV
DD
ST_CAL
DOR
D13–D0
17
ADC
ADC
MDAC
8X
S/H
STAGE2
STAGE3
STAGE4
CORRECTION AND
CALIBRATION LOGIC
END_CAL
OE
OUTPUT DRIVERS
CLOCK
GENERATOR
MAX1201
Figure 1. Internal Block Diagram
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| MAX1201CMH | +5v sINGLE-sUPPLY, 2.2mSPS, 14-bIT sELF-cALIBRATING adc |
| MAX1201EMH | Scan Test Devices With 18-Bit Bus Transceivers 56-TSSOP -40 to 85 |
| MAX1202 | Scan Test Devices With 18-Bit Bus Transceivers 56-SSOP -40 to 85 |
| MAX1202AEAP | 5v, 8-cHANNEL, sERIAL, 12-bIT adcS WITH 3v dIGITAL iNTERFACE |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1202ACAP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1202ACAP+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8Ch 133ksps 5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1202ACAP+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8Ch 133ksps 5V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1202ACAP-T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1202ACPP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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