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參數(shù)資料
| 型號： | MAX1198ECM+D |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 9/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 8BIT 100MSPS DUAL 48-TQFP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 250 |
| 位數(shù)： | 8 |
| 采樣率（每秒）： | 100M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 功率耗散（最大）： | 314mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-TQFP 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 48-TQFP 裸露焊盤（7x7） |
| 包裝： | 托盤 |
| 輸入數(shù)目和類型： | 4 個單端，雙極；2 個差分，雙極 |
| 產(chǎn)品目錄頁面： | 1396 (CN2011-ZH PDF) |
MAX1198
Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC
with Internal Reference and Parallel Outputs
______________________________________________________________________________________
17
Unbuffered External Reference Drives
Multiple ADCs
Connecting each REFIN to analog ground disables the
internal reference of each device, allowing the internal
reference ladders to be driven directly by a set of
external reference sources. Followed by a 10Hz low-
pass filter and precision voltage-divider, the MAX6066
generates a DC level of 2.500V. The buffered outputs
of this divider are set to 2.0V, 1.5V, and 1.0V, with an
accuracy that depends on the tolerance of the divider
resistors.
These three voltages are buffered by the MAX4252,
which provides low noise and low DC offset. The indi-
vidual voltage followers are connected to 10Hz low-
pass filters, which filter both the reference voltage and
amplifier noise to a level of 3nV/
√Hz. The 2.0V and 1.0V
reference voltages set the differential full-scale range
of the associated ADCs at 2VP-P. The 2.0V and 1.0V
buffers drive the ADC’s internal ladder resistances
between them.
Note that the common power supply for all active com-
ponents removes any concern regarding power-supply
sequencing when powering up or down. With the out-
puts of the MAX4252 matching better than 0.1%, the
buffers and subsequent lowpass filters can be replicat-
ed to support as many as 32 ADCs. For applications
that require more than 32 matched ADCs, a voltage
reference and divider string common to all converters
is highly recommended.
Typical QAM Demodulation Application
A frequently used modulation technique in digital com-
munications applications is quadrature amplitude
modulation (QAM). Typically found in spread-spec-
trum-based systems, a QAM signal represents a carrier
frequency modulated in both amplitude and phase. At
the transmitter, modulating the baseband signal with
quadrature outputs, a local oscillator followed by sub-
sequent upconversion can generate the QAM signal.
The result is an in-phase (I) and a quadrature (Q) carri-
er component, where the Q component is 90° phase
MAX4250
MAX6062
16.2k
162
3.3V
2
4
2
3
5
10Hz LOWPASS
FILTER
10Hz LOWPASS
FILTER
1
REFOUT
REFP
REFIN
1
F
MAX1198
N = 1
REFN
29
N.C.
2.048V
N.C.
31
32
1
2
29
31
32
1
2
COM
REFOUT
NOTE: ONE FRONT-END REFERENCE CIRCUIT DESIGN MAY BE USED WITH UP TO 1000 ADCs.
REFP
REFIN
MAX1198
N = 1000
REFN
COM
3
0.1
F
0.1
F
3.3V
0.1
F
0.1
F
0.1
F
0.1
F
0.1
F
2.2
F
10V
0.1
F
0.1
F
0.1
F
100
F
0.1
F
Figure 8. External Buffered (MAX4250) Reference Drive Using a MAX6062 Bandgap Reference
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1198ECM-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 輸入類型:Differential 信噪比:107 dB 接口類型: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 |
| MAX1198EVKIT | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| MAX11G | 制造商:Aavid Thermalloy 功能描述:METALIC HEAT SINK CLIP |
| MAX11NG | 功能描述:散熱片 MaxClip TO220/Max220 9lb 24.7x12mm RoHS:否 制造商:Ampro By ADLINK 產(chǎn)品:Heat Sink Accessories 安裝風(fēng)格:Through Hole 散熱片材料: 散熱片樣式: 熱阻: 長度: 寬度: 高度: 設(shè)計目的:Express-HRR |
| MAX12 | 制造商:Aavid Thermalloy 功能描述:CBL ACC LOW FORCE CLIP - Bulk 制造商:Lanzar 功能描述:4Ohm 1000W Peak 12 Paper Cone Woofer 制造商:LANZAR 功能描述:12 PAPER CONE WOOFER 4OHM 1000W PEAK 制造商:Aavid Thermalloy 功能描述:Thrml Mgmt Access Heat Sink Clip |
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