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参数资料
| 型号： | MAX1108EUB+TG07 |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC ADC 8BIT SPI/SRL 50K 10UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 位数： | 8 |
| 采样率（每秒）： | 50k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 444mW |
| 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： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 个单端，单极；2 个单端，双极；1 个伪差分，单极；1 个伪差分，双极 |
MAX1108/MAX1109
Single-Supply, Low-Power,
2-Channel, Serial 8-Bit ADCs
10
______________________________________________________________________________________
_______________Detailed Description
The MAX1108/MAX1109 analog-to-digital converters
(ADCs) use a successive-approximation conversion
technique and input track/hold (T/H) circuitry to convert
an analog signal to an 8-bit digital output. A flexible
serial interface provides easy interface to microproces-
sors (Ps). No external hold capacitors are required. All
of the MAX1108/MAX1109 operating modes are soft-
ware-configurable: internal or external reference, inter-
nal or external conversion clock, single-ended unipolar
or pseudo-differential unipolar/bipolar conversion, and
power down (Table 1).
Analog Inputs
Track/Hold
The input architecture of the ADCs is illustrated in the
equivalent-input circuit of Figure 4 and is composed of
the T/H, the input multiplexer, the input comparator, the
switched capacitor DAC, the reference, and the auto-
zero rail.
The analog-inputs configuration is determined by the
control-byte through the serial interface as shown in
Table 2 (see Modes of Operation section and Table 1).
The eight modes of operation include single-ended,
pseudo-differential, unipolar/bipolar, and a VDD moni-
toring mode. During acquisition and conversion, only
one of the switches in Figure 4 is closed at any time.
The T/H enters its tracking mode on the falling clock
edge after bit 4 (SEL0) of the control byte has been
shifted in. It enters its hold mode on the falling edge
after the bit 2 (I/EREF) of the control byte has been
shifted in.
For example, If CH0 and COM are chosen (SEL2 =
SEL1 = SEL0 = 1) for conversion, CH0 is defined as the
sampled input (SI), and COM is defined as the refer-
ence input (RI). During acquisition mode, the CH0
switch and the T/H switch are closed, charging the
VDD
3k
CLOAD
DGND
DOUT
CLOAD
DGND
3k
DOUT
a) High-Z to VOH and VOL to VOH
b) High-Z to VOL and VOH to VOL
Figure 1. Load Circuits for Enable Time
VDD
3k
CLOAD
DGND
DOUT
CLOAD
DGND
3k
DOUT
a) VOH to High-Z
b) VOL to High-Z
Figure 2. Load Circuits for Disable Time
VDD
I/O
SCK (SK)
MOSI (SO)
MISO (SI)
VSS
DOUT
DIN
SCLK
CS
COM
GND
VDD
CH1
1
F
0.1
F
1
F
CH0
ANALOG
INPUTS
MAX1108
MAX1109
CPU
VDD
REF
Figure 3. Typical Operating Circuit
CH0
COM
VDD / 2
GND
CH1
REF
GND
CHOLD
18pF
CAPACITIVE DAC
COMPARATOR
RIN
6.5k
AUTOZERO
RAIL
TRACK
HOLD
Figure 4. Equivalent Input Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1108-MAX1109 | 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 |
| MAX1109 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Evaluation Kit for the MAX4135/MAX4136/MAX4137/MAX4138[MAX4135EVKIT ] |
| MAX1109CUB | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1109CUB+ | 功能描述:模数转换器 - ADC 2Ch Single-Supply Low-P Serial 8-Bit RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1109CUB+G07 | 制造商:Maxim Integrated Products 功能描述:10 PINS UMAX PKG - Tape and Reel |
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