參數(shù)資料
型號(hào)： MAX1190ECM
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： ADC
英文描述： Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC with Internal Reference and Parallel Outputs
中文描述： DUAL 1-CH 10-BIT FLASH METHOD ADC, PARALLEL ACCESS, PQFP48
封裝： 7 X 7 MM, 1.0 MM HEIGHT, MS-026ABA-HD, TQFP-48
文件頁(yè)數(shù)： 10/21頁(yè)
文件大?。?/td> 739K
代理商： MAX1190ECM
M
Detailed Description
The MAX1190 uses a nine-stage, fully differential,
pipelined architecture (Figure 1) that allows for high-
speed conversion while minimizing power consump-
tion. Samples taken at the inputs move progressively
through the pipeline stages every half-clock cycle.
Including the delay through the output latch, the total
clock-cycle latency is five clock cycles.
Flash ADCs convert the held input voltages into a digi-
tal code. Internal MDACs convert the digitized results
back into analog voltages, which are then subtracted
from the original held input signals. The resulting error
signals are then multiplied by 2, and the residues are
passed along to the next pipeline stages, where the
process is repeated until the signals have been
processed by all nine stages.
Input Track-and-Hold Circuits
Figure 2 displays a simplified functional diagram of the
input T/H circuits in both track and hold mode. In track
mode, switches S1, S2a, S2b, S4a, S4b, S5a, and S5b
are closed. The fully differential circuits sample the input
signals onto the two capacitors (C2a and C2b) through
switches S4a and S4b. S2a and S2b set the common
mode for the amplifier input, and open simultaneously
with S1, sampling the input waveform. Switches S4a,
S4b, S5a, and S5b are then opened before switches
S3a and S3b connect capacitors C1a and C1b to the
output of the amplifier and switch S4c is closed. The
resulting differential voltages are held on capacitors
C2a and C2b. The amplifiers are used to charge capac-
itors C1a and C1b to the same values originally held on
C2a and C2b.
Dual 10-Bit, 120Msps, 3.3V, Low-Power ADC
with Internal Reference and Parallel Outputs
10
______________________________________________________________________________________
Pin Description (continued)
PIN
40
41
42
43
44
45
46
47
48
NAME
D5A
D6A
D7A
D8A
D9A
REFOUT
REFIN
REFP
REFN
FUNCTION
Three-State Digital Output, Bit 5, Channel A
Three-State Digital Output, Bit 6, Channel A
Three-State Digital Output, Bit 7, Channel A
Three-State Digital Output, Bit 8, Channel A
Three-State Digital Output, Bit 9 (MSB), Channel A
Internal Reference Voltage Output. Can be connected to REFIN through a resistor or a resistor-divider.
Reference Input. V
REFIN
= 2
×
(V
REFP
- V
REFN
). Bypass to GND with a >0.1μF capacitor.
Positive Reference I/O. Conversion range is
±
(V
REFP
- V
REFN
). Bypass to GND with a >0.1μF capacitor.
Negative Reference I/O. Conversion range is
±
(V
REFP
- V
REFN
). Bypass to GND with a >0.1μF capacitor.
10
V
INA
STAGE 1
STAGE 2
D9A–D0A
V
INA
= INPUT VOLTAGE BETWEEN INA+ AND INA- (DIFFERENTIAL OR SINGLE ENDED)
V
INB
= INPUT VOLTAGE BETWEEN INB+ AND INB- (DIFFERENTIAL OR SINGLE ENDED)
DIGITAL ALIGNMENT LOGIC
STAGE 8
STAGE 9
2-BIT FLASH
ADC
T/H
10
V
INB
STAGE 1
STAGE 2
D9B–D0B
DIGITAL ALIGNMENT LOGIC
STAGE 8
STAGE 9
2-BIT FLASH
ADC
T/H
Figure 1. Pipelined Architecture
—
Stage Blocks
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1190ECM+ 制造商:Maxim Integrated Products 功能描述:IC SM ADC LOW POWER 10-BIT DUAL
MAX1190ECM+D 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10Bit 2Ch 120Msps 3.3V Low-Power 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
MAX1190ECM+TD 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10Bit 2Ch 120Msps 3.3V Low-Power 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
MAX1190ECM-D 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
MAX1190ECM-TD 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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