參數資料
型號： MAX189CEWE+T
廠商： Maxim Integrated Products
文件頁數： 1/18頁
文件大?。?/td> 0K
描述： IC ADC 12BIT SERIAL LP 16SOIC
產品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 1,000
位數： 12
采樣率（每秒）： 75k
數據接口： MICROWIRE?，QSPI?，串行，SPI?
轉換器數目： 1
功率耗散（最大）： 478mW
電壓電源： 單電源
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 16-SOIC（0.295"，7.50mm 寬）
供應商設備封裝： 16-SOIC W
包裝： 帶卷 (TR)
輸入數目和類型： 1 個單端，單極
MAX187/MAX189
+5V, Low-Power, 12-Bit Serial ADCs
Functional Diagram
19-0196; Rev 1; 3/12
For related parts and recommended products to use with this part,
EVALUATION KIT AVAILABLE
General Description
The MAX187/MAX189 serial 12-bit analog-to-digital con-
verters (ADCs) operate from a single +5V supply and
accept a 0 to 5V analog input. Both parts feature an 8.5Fs
successive-approximation ADC, a fast track/hold (1.5Fs),
an on-chip clock, and a high-speed 3-wire serial interface.
The MAX187/MAX189 digitize signals at a 75ksps
throughput rate. An external clock accesses data from
the interface, which communicates without external
hardware to most digital signal processors and micro-
controllers. The interface is compatible with SPI, QSPIK,
and MICROWIREM.
The MAX187 has an on-chip buffered reference, and
the MAX189 requires an external reference. Both the
MAX187 and MAX189 save space with 8-pin PDIP and
16-pin SO packages. Power consumption is 7.5mW and
reduces to only 10FW in shutdown.
Excellent AC characteristics and very low power con-
sumption combined with ease of use and small package
size make these converters ideal for remote DSP and
sensor applications, or for circuits where power con-
sumption and space are crucial.
Features
S
12-Bit Resolution
S
± LSB Integral Nonlinearity (MAX187A/MAX189A)
S
Internal Track/Hold, 75kHz Sampling Rate
S
Single +5V Operation
S
Low Power: 2A Shutdown Current
1.5mA Operating Current
S
Internal 4.096V Buffered Reference (MAX187)
S
3-Wire Serial Interface, Compatible with SPI, QSPI,
and MICROWIRE
S
Small-Footprint 8-Pin PDIP and 16-Pin SO
Applications
Portable Data Logging
Remote Digital Signal Processing
Isolated Data Acquisition
High-Accuracy Process Control
QSPI is a trademark of Motorola.
MICROWIRE is a registered trademark of National Semiconductor Corp.
GND 5
REF 4
AIN 2
VDD 1
T/H
BANDGAP
REFERENCE
+2.5V
(MAX187 ONLY)
10kI
AV = 1.638
(4.096V)
REF-
REF+
DAC
OUTPUT
SHIFT
REGISTER
DOUT
6
SCLK
8
CS
7
3
CONTROL
AND
TIMING
12-BIT
SAR
COMPARATOR
BUFFER ENABLE/DISABLE
NOTE: PIN NUMBERS SHOWN ARE FOR 8-PIN DIPs ONLY
SHDN
MAX187
MAX189
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
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