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| 型号： | MAX1086ETA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/15页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT 150KSPS 8-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 位数： | 10 |
| 采样率（每秒）： | 150k |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 1.6mW |
| 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： | 8-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（3x3） |
| 包装： | 标准包装 |
| 输入数目和类型： | 1 个差分，单极；1 个差分，双极 |
| 产品目录页面： | 1395 (CN2011-ZH PDF) |
| 其它名称： | MAX1086ETA+TDKR |
MAX1086–MAX1089
150ksps, 10-Bit, 2-Channel Single-Ended, and
1-Channel True-Differential ADCs in SOT23 and TDFN
10
______________________________________________________________________________________
Output Data Format
Figures 5a and 5b illustrate the conversion timing for
the MAX1086–MAX1089. The 10-bit conversion result is
output in MSB first format, followed by two sub-bits (S1
and S0). Data on DOUT transitions on the falling edge
of SCLK. All 12-bits must be clocked out before CNVST
transitions again. For the MAX1088/MAX1089, data is
straight binary for unipolar mode and two’s comple-
ment for bipolar mode. For the MAX1086/MAX1087,
data is always straight binary.
Applications Information
Automatic Shutdown Mode
With CNVST low, the MAX1086–MAX1089 defaults to an
AutoShutdown state (<0.2A) after power-up and
between conversions. After detecting a rising edge on
CNVST, the part powers up, sets DOUT low and enters
track mode. After detecting a falling-edge on CNVST, the
device enters hold mode and begins the conversion. A
maximum of 3.7s later, the device completes conver-
sion, enters shutdown and MSB is available at DOUT.
External Reference
An external reference is required for the MAX1086–
MAX1089. Use a 0.1F bypass capacitor for best per-
formance. The reference input structure allows a volt-
age range of +1V to VDD + 50mV.
Transfer Function
Figure 6 shows the unipolar transfer function for the
MAX1086–MAX1089. Figure 7 shows the bipolar transfer
function for the MAX1088/MAX1089. Code transitions
occur halfway between successive-integer LSB values.
Connection to Standard Interfaces
The MAX1086–MAX1089 feature a serial interface that is
fully compatible with SPI, QSPI, and MICROWIRE. If a
serial interface is available, establish the CPU’s serial
interface as a master, so that the CPU generates the seri-
al clock for the ADCs. Select a clock frequency up to
8MHz.
How to Perform a Conversion
1)
Use a general purpose I/O line on the CPU to hold
CNVST low between conversions.
2)
Drive CNVST high to acquire AIN1(MAX1086/
MAX1087) or unipolar mode (MAX1088/MAX1089).
To acquire AIN2(MAX1086/MAX1087) or bipolar
mode (MAX1088/MAX1089), drive CNVST low and
high again.
3)
Hold CNVST high for 1.4s.
4)
Drive CNVST low and wait approximately 3.7s for
conversion to complete. After 3.7s, the MSB is
available at DOUT.
5)
Activate SCLK for a minimum of 12 rising clock
edges. DOUT transitions on SCLK’s falling edge
OUTPUT CODE
FULL-SCALE
TRANSITION
11 . . . 111
11 . . . 110
11 . . . 101
00 . . . 011
00 . . . 010
00 . . . 001
00 . . . 000
12
3
0
FS
FS - 3/2LSB
FS = VREF
ZS = GND
INPUT VOLTAGE (LSB)
1LSB =
VREF
1024
MAX1086–
MAX1089
Figure 6. Unipolar Transfer Function
011 . . . 111
011 . . . 110
000 . . . 010
000 . . . 001
000 . . . 000
111 . . . 111
111 . . . 110
111 . . . 101
100 . . . 001
100 . . . 000
- FS
0
INPUT VOLTAGE (LSB)
OUTPUT CODE
ZS = 0
+FS - 1LSB
*VCOM
VREF / 2 *VIN = (AIN+) - (AIN-)
FS =
VREF
2
-FS =
-VREF
2
1LSB =
VREF
1024
≤
MAX1088/MAX1089
Figure 7. Bipolar Transfer Function
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1086EVKIT | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Evaluation Kit and Evaluation System for the MAX1286/MAX1288/MAX1086/MAX1088 |
| MAX1087 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:150ksps.10-Bit.2-Channel Single-Ended.and 1-Channel True-Differential ADCs in SOT23 |
| MAX1087EKA | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product |
| MAX1087EKA-T | 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 |
| MAX1087ETA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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