- 您现在的位置：买卖IC网 > PDF目录2085 > MAX1118EKA+T (Maxim Integrated Products)IC ADC 8-BIT 100KSPS SOT23-8 PDF资料下载
参数资料
| 型号： | MAX1118EKA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/14页 |
| 文件大小： | 0K |
| 描述： | IC ADC 8-BIT 100KSPS SOT23-8 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 位数： | 8 |
| 采样率（每秒）： | 100k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 680µW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 |
| 供应商设备封装： | SOT-23-8 |
| 包装： | 标准包装 |
| 输入数目和类型： | 2 个单端，单极 |
| 产品目录页面： | 1395 (CN2011-ZH PDF) |
| 其它名称： | MAX1118EKA+TDKR |
MAX1117/MAX1118/MAX1119
Single-Supply, Low-Power,
2-Channel, Serial 8-Bit ADCs
8
_______________________________________________________________________________________
VDD
I/O
SCK (SK)
MISO (SI)
GND
DOUT
SCLK
CNVST
GND
VDD
0.1
μF
1
μF
CH0
REF*
* MAX1118 ONLY
1
μF
ANALOG
INPUTS
MAX1117
MAX1118
MAX1119
CPU
VDD
CH1
Figure 3. Typical Operating Circuit
GND
CHOLD
CAPACITIVE DAC
COMPARATOR
16pF
RIN
6.5k
Ω
AUTOZERO
RAIL
TRACK
HOLD
CH0
CH1
Figure 4. Equivalent Input Circuit
Detailed Description
The MAX1117/MAX1118/MAX1119 ADCs use a suc-
cessive-approximation conversion technique and input
T/H circuitry to convert an analog signal to an 8-bit digi-
tal output. The SPI/QSPI/MICROWIRE compatible inter-
face directly connects to microprocessors (Ps) without
additional circuity (Figure 3).
Track/Hold
The input architecture of the ADC is illustrated in Figure
4’s equivalent-input circuit and is composed of the T/H,
the input multiplexer, the input comparator, the
switched capacitor DAC, and the auto-zero rail.
The acquisition interval begins with the falling edge of
CNVST. During the acquisition interval, the analog
inputs (CH0, CH1) are connected to the holding capac-
itor (CHOLD). Once the acquisition has completed, the
T/H switch opens and CHOLD is connected to GND,
retaining the charge on CHOLD as a sample of the sig-
nal at the analog input.
Sufficiently low source impedance is required to ensure
an accurate sample. A source impedance <1.5k
Ω is
recommended for accurate sample settling. A 100pF
capacitor at the ADC inputs will also improve the accu-
racy of an input sample.
Conversion Process
The MAX1117/MAX1118/MAX1119 conversion process
is internally timed. The total acquisition and conversion
process takes <7.5s. Once an input sample has been
acquired, the comparator’s negative input is then con-
VDD
3k
Ω
CLOAD
GND
DOUT
CLOAD
GND
3k
Ω
DOUT
a) VOL TO VOH
b) HIGH-Z to VOL AND VOH to VOL
VDD
3k
Ω
CLOAD
GND
DOUT
CLOAD
GND
3k
Ω
DOUT
a) VOH TO HIGH-Z
b) VOL TO HIGH-Z
Figure 1. Load Circuits for Enable Time
Figure 2. Load Circuits for Disable Time
相关PDF资料 |
PDF描述 |
|---|---|
| MAX11205BEUB+T | IC ADC 16BIT SRL 13.75SPS 10UMAX |
| MAX11206EEE+ | IC ADC 20BIT 16QSOP |
| MAX11208BEUB+ | IC ADC 20BIT SRL 13.75SPS 10UMAX |
| MAX11209EEE+T | ADC 18BIT DELT-SIG PROGR 16-QSOP |
| MAX11213EEE+ | IC ADC 16BIT 16QSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1119 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs |
| MAX11190ETE+ | 制造商:Maxim Integrated Products 功能描述:DUAL, 2.2V TO 3.6V, 12-BIT, 3MSPS SAR ADC IN TINY TQFN PACKA - Rail/Tube |
| MAX11190ETE+T | 制造商:Maxim Integrated Products 功能描述:DUAL, 2.2V TO 3.6V, 12-BIT, 3MSPS SAR ADC IN TINY TQFN PACKA - Tape and Reel |
| MAX1119EKA | 制造商:Maxim Integrated Products 功能描述:8 PIN COUNT SOT PACKAGE TYPE - Cut Tape Product |
| MAX1119EKA+ | 制造商:Maxim Integrated Products 功能描述:ADC SGL SAR 100KSPS 8BIT SERL 8PIN SOT-23 - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC 8BIT ADC SERIAL 2CH 8SOT |
发布紧急采购，3分钟左右您将得到回复。