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參數(shù)資料
| 型號： | MAX1149 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Voltage Adjustable Precision Shunt Regulator 3-SOT-89 -40 to 125 |
| 中文描述： | 多通道、真差分、串行、14位ADC |
| 文件頁數(shù)： | 1/25頁 |
| 文件大小： | 879K |
| 代理商： | MAX1149 |
General Description
The MAX1146–MAX1149 low-power, 14-bit, multichan-
nel, analog-to-digital converters (ADCs) feature an
internal track/hold (T/H), voltage reference, and clock.
The MAX1146/MAX1148 operate from a single +4.75V
to +5.25V supply, and the MAX1147/MAX1149 operate
from a single +2.7V to +3.6V supply. All analog inputs
are software configurable for unipolar/bipolar and sin-
gle-ended/differential operation.
The 4-wire serial interface connects directly to
SPI/QSPI/MICROWIRE devices without external
logic. The serial strobe output (SSTRB) allows conve-
nient connection to digital signal processors. The
MAX1146–MAX1149 use an internal clock or an exter-
nal serial-interface clock to perform successive-approx-
imation analog-to-digital conversions.
The MAX1146/MAX1148 include an internal +4.096V
reference, while the MAX1147/MAX1149 include an
internal +2.500V reference. All devices accept an exter-
nal reference from 1.5V to V
DD
.
The MAX1146–MAX1149 provide a hardware shutdown
and two software power-down modes. Using the soft-
ware power-down modes allows the devices to be pow-
ered down between conversions. When powered down,
accessing the serial interface automatically powers up
the devices. The quick turn-on time allows power-down
between all conversions. This technique reduces sup-
ply current to under 120μA for quick turn-on.
The MAX1146–MAX1149 are available in a 20-pin
TSSOP package.
Applications
Portable Data Logging
Data Acquisition
Medical Instruments
Battery-Powered Instruments
Process Control
Features
8-Channel Single-Ended or 4-Channel Differential
Inputs (MAX1148/MAX1149)
4-Channel Single-Ended or 2-Channel Differential
Inputs (MAX1146/MAX1147)
Internal Multiplexer and T/H
Single-Supply Operation
4.75V to 5.25V Supply (MAX1146/MAX1148)
2.7V to 3.6V Supply (MAX1147/MAX1149)
Internal Reference
+4.096V (MAX1146/MAX1148)
+2.500V (MAX1147/MAX1149)
116ksps Sampling Rate
Low Power
1.1mA (116ksps)
120μA (10ksps)
12μA (1ksps)
300nA (Power-Down Mode)
SPI-/QSPI-/MICROWIRE Compatible
20-Pin TSSOP
M
Multichannel, True-Differential,
Serial, 14-Bit ADCs
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Ordering Information/Selector Guide
19-3488; Rev 1; 1/05
EVALUATION KIT
AVAILABLE
PART
TEMP
RANGE
PIN-
PACKAGE
INL
(LSB)
INPUT
CHANNELS
INTERNAL
REFERENCE (V)
MAX1146
BCUP
MAX1146BEUP
MAX1147
BCUP
MAX1147BEUP
MAX1148
BCUP
MAX1148BEUP
MAX1149
BCUP
MAX1149BEUP
0
°
C to +70
°
C
-40
°
C to +85
°
C
0
°
C to +70
°
C
-40
°
C to +85
°
C
0
°
C to +70
°
C
-40
°
C to +85
°
C
0
°
C to +70
°
C
-40
°
C to +85
°
C
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
±2
±2
±2
±2
±2
±2
±2
±2
4
4
4
4
8
8
8
8
+4.096
+4.096
+2.500
+2.500
+4.096
+4.096
+2.500
+2.500
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Pin Configurations appear at end of data sheet.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1147BCUP | Multichannel, True-Differential, Serial, 14-Bit ADCs |
| MAX1147BEUP | Multichannel, True-Differential, Serial, 14-Bit ADCs |
| MAX1146BCUP | Multichannel, True-Differential, Serial, 14-Bit ADCs |
| MAX1146BEUP | Multichannel, True-Differential, Serial, 14-Bit ADCs |
| MAX1159ACUI | Analog to Digital Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1149BCUP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1149BCUP+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 8Ch 116ksps 3.3V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1149BCUP+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 8Ch 116ksps 3.3V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1149BCUP-T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1149BEUP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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