參數(shù)資料
型號: MAX9939EVKIT+
廠商: Maxim Integrated Products
文件頁數(shù): 1/15頁
文件大?。?/td> 0K
描述: KIT EVAL FOR MAX9939
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 1
每 IC 通道數(shù): 2 - 雙
放大器類型: 可編程增益
輸出類型: 差分
轉(zhuǎn)換速率: 9 V/µs
電流 - 輸出 / 通道: 70mA
工作溫度: -40°C ~ 125°C
電流供應(yīng)(主 IC): 3.4mA
電壓 - 電源,單路/雙路(±): 2.9 V ~ 5.5 V
板類型: 完全填充
已供物品: 板,軟件
已用 IC / 零件: MAX9939
19-4329; Rev 3; 12/12
MAX9939
SPI Programmable-Gain Amplifier
with Input VOS Trim and Output Op Amp
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
General Description
The MAX9939 is a general-purpose, differential-input
programmable-gain amplifier (PGA) that is ideal for con-
ditioning a variety of wide dynamic range signals such
as those found in motor current-sense, medical instru-
mentation, and sonar data acquisition applications. It
features programmable differential gains from 0.2V/V to
157V/V, input offset-voltage compensation, and an out-
put amplifier that can be configured either as a high-
order active filter or to provide a differential output.
The PGA is optimized for high-signal bandwidth and its
gain can be programmed to be 0.2V/V, 1V/V, 10V/V,
20V/V, 30V/V, 40V/V, 60V/V, 80V/V, 119V/V, and 157V/V.
Precision resistor matching provides extremely low gain
tempco and high CMRR. Although the MAX9939 oper-
ates from a single supply VCC between 2.9V to 5.5V, it
can process signals both above and below ground due
to the use of an input level-shifting amplifier stage.
Furthermore, its inputs are protected to ±16V, allowing it
to withstand fault conditions and signal overranges.
The output amplifier is designed for high bandwidth
and low-bias currents, making it ideal for use in multi-
ple-feedback active filter topologies that offer much
higher Qs and stopband attenuation than Sallen-Key
architectures.
The MAX9939 draws 3.4mA of quiescent supply current
at 5V, and includes a software-programmable shut-
down mode that reduces its supply current to only
13A. The MAX9939 is available in a 10-pin MAX
package and operates over the -40°C to +125°C auto-
motive temperature range.
Applications
Sensorless Motor Control
Medical Signal Conditioning
Sonar and General Purpose Data Acquisition
Differential to Single-Ended Conversion
Differential-Input, Differential-Output Signal
Amplification
Sensor Interface and Signal Processing
Features
o SPI-Programmable Gains: 0.2V/V to 157V/V
o Extremely Low Gain Tempco
o Integrated Amplifier for R/C Programmable Active
Filter
o Input Offset-Voltage Compensation
o Input Protection to ±16V
o 13A Software Shutdown Mode
o -40°C to +125°C Operating Temperature Range
o 10-Pin MAX Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX9939AUB+
-40°C to +125°C
10 MAX
MAX9939AUB/V+T
-40°C to +125°C
10 MAX
/V denotes an automotive-qualified part.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
Functional Diagram appears at end of data sheet.
MAX is a registered trademark of Maxim Integrated Products, Inc.
1
2
3
4
5
10
9
8
7
6
VCC
OUTA
INB
INA-
GND
DIN
SCLK
MAX9939
MAX
TOP VIEW
OUTB
INA+
CS
+
Pin Configuration
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