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參數(shù)資料
| 型號(hào)： | MAX1115EKA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 8-BIT 100KSPS SOT23-8 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 位數(shù)： | 8 |
| 采樣率（每秒）： | 100k |
| 數(shù)據(jù)接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 410µW |
| 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： | SOT-23-8 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-8 |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 輸入數(shù)目和類型： | 1 個(gè)單端，單極 |
| 產(chǎn)品目錄頁面： | 1395 (CN2011-ZH PDF) |
| 其它名稱： | MAX1115EKA+TDKR |
MAX1115/MAX1116
active conversion process interrupt the current conver-
sion and cause the input multiplexer to switch to VDD/2.
To reinitiate a conversion on CH0, it is necessary to allow
for a conversion to be complete and all of the data to be
read out. Once a conversion has been completed, the
MAX1115/MAX1116 goes into Autoshutdown mode
(typically <1A) until the next conversion is initiated.
Applications Information
Power-On Reset
When power is first applied, the MAX1115/MAX1116
are in AutoShutdown (typically <1A). A conversion
can be started by toggling CNVST high to low.
Powering up the MAX1115/MAX1116 with CNVST low
does not start a conversion.
AutoShutdown and Supply Current
Requirements
The MAX1115/MAX1116 are designed to automatically
shutdown once a conversion is complete, without any
external control. An input sample and conversion
process typically takes 5s to complete, during which
time the supply current to the analog sections of the
device are fully on. All analog circuitry is shutdown after
a conversion completes, which results in a supply cur-
rent of <1A (see Shutdown Current vs. Supply Voltage
plot in the Typical Operating Characteristics section).
The digital conversion result is maintained in a static
register and is available for access through the serial
interface at any time.
The power consumption consequence of this architec-
ture is dramatic when relatively slow conversion rates
are needed. For example, at a conversion rate of
10ksps, the average supply current for the MAX1115 is
15A, while at 1ksps it drops to 15A. At 0.1ksps it is
just 0.3A, or a miniscule 1W of power consumption
(see Average Supply Current vs. Conversion Rate plot
in the Typical Operating Characteristics sections).
Transfer Function
Figure 7 depicts the input/output transfer function.
Output coding is binary with a +2.048V reference,
1LSB = 8mV(VREF/256).
Layout, Grounding, and Bypassing
For best performance, board layout should ensure that
digital and analog signal lines are separated from each
other. Do not run analog and digital (especially clock)
lines parallel to one another or run digital lines under-
neath the ADC package.
Figure 8 shows the recommended system-ground con-
nections. A single-point analog ground (star-ground
point) should be established at the ADC ground.
Connect all analog grounds to the star-ground. The
ground-return to the power supply for the star ground
should be low impedance and as short as possible for
noise-free operation.
High-frequency noise in the VDD power supply can
affect the comparator in the ADC. Bypass the supply to
the star ground with a 0.1F capacitor close to the VDD
pin of the MAX1115/MAX1116. Minimize capacitor lead
Single-Supply, Low-Power, Serial 8-Bit ADCs
10
______________________________________________________________________________________
OUTPUT CODE
FULL-SCALE
TRANSITION
11111111
11111110
11111101
00000011
00000010
00000001
00000000
12
3
0
FS
FS - 1/2 LSB
FS = VREFIN + VIN-
1LSB = VREFIN
256
INPUT VOLTAGE (LSB)
Figure 7. Input/Output Transfer Function
GND
+3V/+5V
SYSTEM POWER SUPPLIES
VDD
DGND
VDD
IN-
1
F
10
0.1
F
GND
DIGITAL
CIRCUITRY
MAX1115
MAX1116
Figure 8. Power-Supply Connections
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1115EKA-TW | 制造商:Maxim Integrated Products 功能描述:8 PINS SOT PKG - Tape and Reel |
| MAX1115EKA-W | 制造商:Maxim Integrated Products 功能描述:8 PIN COUNT SOT PACKAGE TYPE - Bulk |
| MAX1116 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Single-Supply.Low-Power.Serial 8-Bit ADCs |
| MAX11160 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:16-Bit, 500ksps/250ksps, ?±5V SAR ADCs with Internal Reference in TDFN |
| MAX11160DBEVKIT# | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 16b 500ksps Unipolar w/Int Reference RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
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