參數(shù)資料
型號(hào)： MAX104
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： ADC
英文描述： 【5V, 1Gsps, 8-Bit ADC with On-Chip 2.2GHz Track/Hold Amplifier
中文描述： 1-CH 8-BIT FLASH METHOD ADC, PARALLEL ACCESS, PGA192
文件頁(yè)數(shù)： 18/32頁(yè)
文件大?。?/td> 637K
代理商： MAX104
M
Offset Adjust
The MAX104 provides a control input (VOSADJ ) to com-
pensate for system offsets. The offset adjust input is a
self-biased voltage divider from the internal +2.5V preci-
sion reference. The nominal open-circuit voltage is one-
half the reference voltage. With an input resistance of
typically 25k
, this pin may be driven by an external
10k
potentiometer (Figure 11) connected between
REFOUT and GNDI to correct for offset errors. This con-
trol provides a typical ±5.5LSB offset adjustment range.
Cloc k Operation
The MAX104 clock inputs are designed for either single-
ended or differential operation (Figure 12) with flexible
input drive requirements. Each clock input is terminated
with an on-chip, laser-trimmed 50
resistor to CLKCOM
(clock-termination return). The CLKCOM termination
voltage can be connected anywhere between ground
and -2V for compatibility with standard ECL drive levels.
The clock inputs are internally buffered with a preampli-
fier to ensure proper operation of the data converter
with even small-amplitude sine-wave sources. The
MAX104 was designed for single-ended, low-phase-
noise sine-wave clock signals with as little as 100mV
amplitude (-10dBm). This eliminates the need for an
external ECL clock buffer and its added jitter.
Single-Ended Clock Inputs (Sine-Wave Drive)
Excellent performance is obtained by AC- or DC-cou-
pling a low-phase-noise sine-wave source into a single
clock input (Figure 13a, Table 5). For proper DC bal-
ance, the undriven clock input should be externally
50
reverse-terminated to GNDI.
The dynamic performance of the data converter is
essentially unaffected by clock-drive power levels from
±5V, 1Gsps, 8-Bit ADC with
On-Chip 2.2GHz Trac k/Hold Amplifier
18
______________________________________________________________________________________
Table 4. Ideal Input Voltage and Output Code Results for Differential Operation
-125mV
-125mV + 0.5LSB
11111111 (full scale)
+125mV
VIN-
1
11111111
+125mV - 0.5LSB
0
OVERRANGE BIT
0V
+125mV - 0.5LSB
01111111
toggles
10000000
0V
0
00000001
-125mV + 0.5LSB
0
+125mV
00000000 (zero scale)
-125mV
0
VIN+
OUTPUT CODE
GNDI
POT
10k
REFOUT
VOSADJ
MAX104
Figure 11. Offset Adjust with External 10k
Potentiometer
CLK+
CLKCOM
CLOCK INPUTS ARE
ESD PROTECTED
(NOT SHOWN IN THIS
SIMPLIFIED DRAWING).
CLK-
50
+0.8V
50
GNDI
V
EE
Figure 12. Simplified Clock Input Structure (Single-Ended/
Differential)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1040 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports
MAX1040_08 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:10-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports
MAX1040BETX 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX1040BETX+ 功能描述:ADC / DAC多通道 10Bit AD/DACs w/FIFO Temp Sns & GPIO Port RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
MAX1040BETX+T 功能描述:ADC / DAC多通道 10Bit AD/DACs w/FIFO Temp Sns & GPIO Port RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40
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