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参数资料
| 型号： | MAX11617EVSYS+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | EVALUATION SYSTEM FOR MAX11617 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 8，10，12 |
| 采样率（每秒）： | 94.4k |
| 数据接口： | I²C，串行 |
| 工作温度： | -40°C ~ 85°C |
| 已用 IC / 零件： | MAX11617 |
| 已供物品： | 2 个板，软件 |
MAX11612–MAX11617
Low-Power, 4-/8-/12-Channel, I2C,
12-Bit ADCs in Ultra-Small Packages
19
Maxim Integrated
When idle, the MAX11612–MAX11617 continuously wait
for a START condition followed by their slave address
(see the
Slave Address section). Upon reading a valid
address byte, the MAX11612–MAX11617 power up.
The internal reference requires 10ms to wake up, so
when using the internal reference it should be powered
up 10ms prior to conversion or powered continuously.
Wake-up is invisible when using an external reference
or VDD as the reference.
Automatic shutdown results in dramatic power savings,
particularly at slow conversion rates and with internal
clock. For example, at a conversion rate of 10ksps, the
average supply current for the MAX11613 is 60A (typ)
and drops to 6A (typ) at 1ksps. At 0.1ksps the average
supply current is just 1A, or a minuscule 3W of power
consumption. See Average Supply Current vs. Conversion
Rate in the
Typical Operating Characteristics section).
Reference Voltage
SEL[2:0] of the setup byte (Table 1) control the reference
and the AIN_/REF configuration (Table 6). When AIN_/REF
is configured to be a reference input or reference output
(SEL1 = 1), differential conversions on AIN_/REF appear
as if AIN_/REF is connected to GND (see note 2 of Table
4). Single-ended conversion in scan mode AIN_/REF is
ignored by the internal limiter, which sets the highest avail-
able channel at AIN2 or AIN10.
Internal Reference
The internal reference is 4.096V for the MAX11612/
MAX11614/MAX11616 and 2.048V for the MAX11613/
MAX11615/MAX11617. SEL1 of the setup byte controls
whether AIN_/REF is used for an analog input or a refer-
ence (Table 6). When AIN_/REF is configured to be an
internal reference output (SEL[2:1] = 11), decouple
AIN_/REF to GND with a 0.1F capacitor and a 2k
series resistor (see the
Typical Operating Circuit). Once
powered up, the reference always remains on until recon-
figured. The internal reference requires 10ms to wake up
and is accessed using SEL0 (Table 6). When in shutdown,
the internal reference output is in a high-impedance state.
The reference should not be used to supply current for
external circuitry. The internal reference does not require an
external bypass capacitor and works best when left uncon-
nected (SEL1 = 0).
External Reference
The external reference can range from 1V to VDD. For
maximum conversion accuracy, the reference must be
able to deliver up to 40A and have an output imped-
ance of 500k
or less. If the reference has a higher out-
put impedance or is noisy, bypass it to GND as close to
AIN_/REF as possible with a 0.1F capacitor.
SEL2
SEL1
SEL0
REFERENCE
VOLTAGE
AIN_/REF
(MAX11612/
MAX11613/
MAX11616/
MAX11617)
REF
(MAX11614/
MAX11615)
INTERNAL
REFERENCE
STATE
00
X
VDD
Analog input
Not connected
Always off
0
1
X
External reference
Reference input
Always off
1
0
Internal reference
Analog input
Not connected
Always off
1
0
1
Internal reference
Analog input
Not connected
Always on
1
0
Internal reference
Reference output
Always off
1
Internal reference
Reference output
Always on
Table 6. Reference Voltage, AIN_/REF, and REF Format
OUTPUT CODE
FULL-SCALE
TRANSITION
11 . . . 111
11 . . . 110
11 . . . 101
00 . . . 011
00 . . . 010
00 . . . 001
00 . . . 000
12
3
0
FS
FS - 3/2 LSB
FS = VREF
ZS = GND
INPUT VOLTAGE (LSB)
MAX11612–
MAX11617
1 LSB =
VREF
4096
Figure 12. Unipolar Transfer Function
X = Don’t care.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX11617EVSYS+ | 功能描述:数据转换 IC 开发工具 MAX11617 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX11617EWE+ | 制造商:Maxim Integrated Products 功能描述:2.7V TO 3.6V, LOW-POWER, 12-CHANNEL, 2-WIRE SERIAL 12-BIT AD - Rail/Tube |
| MAX11617EWE+T | 功能描述:模数转换器 - ADC 12Bit 12Ch 94.4ksps 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 |
| MAX11618EEE+ | 功能描述:模数转换器 - ADC 4Ch 10-Bit 300ksps w/FIFO & Int Ref 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 |
| MAX11618EEE+T | 功能描述:模数转换器 - ADC 4Ch 10-Bit 300ksps w/FIFO & Int Ref 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 |
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