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參數資料
| 型號： | MAX1245 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | +2.375V, Low-Power, 8-Channel, Serial 12-Bit ADC |
| 中文描述： | +2.375V、低功耗、8通道、串行12位ADC |
| 文件頁數： | 1/20頁 |
| 文件大小： | 152K |
| 代理商： | MAX1245 |
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
________________General Desc ription
The MAX1245 12-bit data-acquisition system combines
an 8-channel multiplexer, high-bandwidth track/hold, and
serial interface with high conversion speed and ultra-low
power consumption. It operates from a single +2.375V to
+3.3V supply, and its analog inputs are software config-
urable for unipolar/bipolar and single-ended/differential
operation.
The 4-wire serial interface directly connects to SPI ,
QSPI, and Microwire devices without external logic.
A serial strobe output allows direct connection to
TMS320-family digital signal processors. The MAX1245
works with an external reference, and uses either the
internal clock or an external serial-interface clock to
perform successive-approximation analog-to-digital
conversions.
This device provides a hard-wired
SHDN
pin and a
software-selectable power-down, and can be pro-
grammed to automatically shut down at the end of a
conversion. Accessing the serial interface powers up
the MAX1245, and the quick turn-on time allows it to be
shut down between conversions. This technique can
cut supply current to under 10μA at reduced sampling
rates.
The MAX1245 is available in a 20-pin DIP package and
an SSOP that occupies 30% less area than an 8-pin DIP.
For supply voltages from +2.7V to +5.25V, use the pin-
compatible MAX147.
________________________Applic ations
Portable Data Logging
Battery-Powered Instruments
Medical Instruments
Data Acquisition
____________________________Features
o
Single +2.375V to +3.3V Operation
o
8-Channel Single-Ended or 4-Channel
Differential Analog Inputs
o
Low Power: 0.8mA (100ksps)
10μA (1ksps)
1μA (power-down mode)
o
Internal Track/Hold, 100kHz Sampling Rate
o
SPI/QSPI/Microwire/TMS320-Compatible
4-Wire Serial Interface
o
Software-Configurable Unipolar or Bipolar Inputs
o
20-Pin DIP/SSOP Packages
M
+2.375V, Low-Power, 8-Channel,
S erial 12-Bit ADC
________________________________________________________________ Maxim Integrated Products
1
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
TOP VIEW
DIP/SSOP
V
DD
SCLK
CS
DIN
SSTRB
DOUT
DGND
AGND
V
DD
VREF
SHDN
COM
CH7
CH6
CH5
CH4
CH3
CH2
CH1
CH0
MAX1245
___________________Pin Configuration
V
DD
I/O
SCK (SK)*
MOSI (SO)
MISO(SI)
V
SS
SHDN
SSTRB
DOUT
DIN
SCLK
CS
COM
AGND
DGND
V
DD
CH7
0.1
μ
F
0.1
μ
F
CH0
0V to
+2.048V
ANALOG
INPUTS
MAX1245
CPU
+2.5V
VREF
+2.048V
___________Typic al Operating Circ uit
19-1066; Rev 0; 6/96
PART
MAX1245ACPP
MAX1245BCPP
MAX1245ACAP
MAX1245BCAP
MAX1245BC/D
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
20 Plastic DIP
20 Plastic DIP
20 SSOP
20 SSOP
Dice*
________________Ordering Information
Ordering Information continued at end of data sheet.
Contact factory for availability of alternate surface-mount
packages.
*Contact factory for availability.
INL
(LSB)
±1/2
±1
±1/2
±1
±1
SPI and QSPI are registered trademarks of Motorola, Inc. Microwire is a registered trademark of National Semiconductor Corp.
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相關代理商/技術參數 |
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| MAX1245ACAP | 功能描述:模數轉換器 - ADC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1245ACAP+ | 功能描述:模數轉換器 - ADC 10-Bit 8Ch 100ksps 3.3V Precision ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1245ACAP+T | 功能描述:模數轉換器 - ADC 10-Bit 8Ch 100ksps 3.3V Precision ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1245ACAP-T | 功能描述:模數轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1245ACPP | 功能描述:模數轉換器 - ADC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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