- 您现在的位置：买卖IC网 > PDF目录9959 > MAX1136EUA+T (Maxim Integrated Products)IC ADC 10BIT SERIAL 8-UMAX PDF资料下载
参数资料
| 型号： | MAX1136EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/22页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT SERIAL 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 位数： | 10 |
| 采样率（每秒）： | 94.4k |
| 数据接口： | I²C，串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 3.35mW |
| 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-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 4 个单端，单极；4 个单端，双极；2 个差分，单极；2 个差分，双极 |
MAX1136–MAX1139
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 MAX1137 is 60A (typ) and
drops to 6A (typ) at 1ksps. At 0.1ksps the average sup-
ply current is just 1A, or a minuscule 3W of power con-
sumption, see Average Supply Current vs. Conversion
Rate in the
Typical Operating Characteristics.
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 and
Table 4). Single-ended conversion in scan mode on
AIN_/REF will be ignored by internal limiter, which sets the
highest available channel at AIN2 or AIN10.
Internal Reference
The internal reference is 4.096V for the MAX1136/
MAX1138 and 2.048V for the MAX1137/MAX1139. SEL1
of the setup byte controls whether AIN_/REF is used for an
analog input or a reference (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
sereis resistor (see the Typical Operating
Circuit). Once powered up, the reference always remains
on until reconfigured. 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 not connected to the pin (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 500
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.
Transfer Functions
Output data coding for the MAX1136–MAX1139 is bina-
ry in unipolar mode and two’s complement in bipolar
mode with 1 LSB = (VREF/2N) where ‘N’ is the number
of bits (10). Code transitions occur halfway between
successive-integer LSB values. Figure 12 and Figure
13 show the input/output (I/O) transfer functions for
unipolar and bipolar operations, respectively.
Layout, Grounding, and Bypassing
Only use PC boards. Wire-wrap configurations are not
recommended since the layout should ensure proper
separation of analog and digital traces. Do not run ana-
log and digital lines parallel to each other, and do not
layout digital signal paths underneath the ADC pack-
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial 10-Bit ADCs
18
______________________________________________________________________________________
SEL2
SEL1
SEL0
REFERENCE VOLTAGE
AIN_/REF
INTERNAL REFERENCE
STATE
00
X
VDD
Analog Input
Always Off
0
1
X
External Reference
Reference Input
Always Off
1
0
Internal Reference
Analog Input
Always Off
1
0
1
Internal Reference
Analog Input
Always On
1
0
Internal Reference
Reference Output
Always Off
1
Internal Reference
Reference Output
Always On
Table 6. Reference Voltage and AIN_/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)
1 LSB =
VREF
1024
MAX1136–
MAX1139
Figure 12. Unipolar Transfer Function
相关PDF资料 |
PDF描述 |
|---|---|
| VE-21H-MX-F3 | CONVERTER MOD DC/DC 52V 75W |
| VI-26M-IW-F1 | CONVERTER MOD DC/DC 10V 100W |
| MS27508E8F98S | CONN RCPT 3POS BOX MNT W/SCKT |
| VI-26K-IW-F3 | CONVERTER MOD DC/DC 40V 100W |
| VE-21H-MX-F2 | CONVERTER MOD DC/DC 52V 75W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1136KEUA | 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 |
| MAX1136KEUA-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 |
| MAX1136LEUA | 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 |
| MAX1136LEUA-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 |
| MAX1136MEUA | 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 |
发布紧急采购，3分钟左右您将得到回复。