MAX1288ETA+T Maxim Integrated Products, MAX1288ETA+T Datasheet

IC ADC 12BIT 150KSPS 8-TDFN

MAX1288ETA+T

Manufacturer Part Number
MAX1288ETA+T
Description
IC ADC 12BIT 150KSPS 8-TDFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1288ETA+T

Number Of Bits
12
Sampling Rate (per Second)
150k
Data Interface
MICROWIRE™, QSPI™, Serial, SPI™
Number Of Converters
1
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-WDFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
MAX1288ETA+T
The MAX1286–MAX1289 are low-cost, micropower, seri-
al output 12-bit analog-to-digital converters (ADCs)
available in a tiny 8-pin SOT23 and an 8-pin TDFN. The
MAX1286/MAX1288 operate with a single +5V supply.
The MAX1287/MAX1289 operate with a single +3V sup-
ply. The devices feature a successive-approximation
ADC, automatic shutdown, fast wakeup (1.4µs), and a
high-speed 3-wire interface. Power consumption is only
0.5mW (V
150ksps. AutoShutdown™ (0.2µA) between conversions
results in reduced power consumption at slower
throughput rates. The MAX1286/MAX1287 provide
2-channel, single-ended operations and accept input
signals from 0 to V
true-differential inputs ranging from 0 to V
accessed using an external clock through the 3-wire
SPI™-/QSPI™-/MICROWIRE™-compatible serial inter-
face. Excellent dynamic performance, low power, ease
of use, and small package size make these converters
ideal for portable battery-powered data-acquisition
applications, and for other applications that demand low
power consumption and minimal space.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
19-2231; Rev 3; 8/10
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
TOP VIEW
AIN1 (AIN+)
( ) ARE FOR THE MAX1288/MAX1289
AIN2 (AIN-)
150ksps, 12-Bit, 2-Channel Single-Ended, and
GND
Low-Power Data Acquisition
Portable Temperature Monitors
Flowmeters
Touch Screens
V
DD
DD
1
2
4
3
= +2.7V) at the maximum sampling rate of
MAX1286–
MAX1289
SOT23
________________________________________________________________ Maxim Integrated Products
REF
. The MAX1288/MAX1289 accept
General Description
Pin Configurations
8
7
6
5
SCLK
DOUT
CNVST
REF
Applications
+
1-Channel True-Differential ADCs
8
1
MAX1286–
MAX1289
7
2
TDFN
REF
6
3
. Data is
EP
4
5
o Single-Supply Operation
o Autoshutdown Between Conversions
o Low Power
o True-Differential Track/Hold, 150kHz Sampling Rate
o Software-Configurable Unipolar/Bipolar
o SPI-/QSPI-/MICROWIRE-Compatible Interface for
o Internal Conversion Clock
o 8-Pin SOT23 and 8-Pin TDFN Packages
Note: All devices specified over the -40°C to +85°C operating
range .
+ Denotes a lead(Pb)-free/RoHS-compliant package .
- Denotes a package containing lead(Pb).
* EP = Exposed pad.
MAX1286EKA-T
MAX1286ETA+T
MAX1287EKA-T
MAX1287ETA+T
MAX1288EKA-T
MAX1288ETA+T
MAX1289EKA-T
MAX1289ETA+T
Conversion (MAX1288/MAX1289 Only)
DSPs and Processors
+3V (MAX1287/MAX1289)
+5V (MAX1286/MAX1288)
245µA at 150ksps
150µA at 100ksps
15µA at 10ksps
2µA at 1ksps
0.2µA in Shutdown
PART
Ordering Information
PIN-PACKAGE
8 SOT23
8 TDFN-EP*
8 SOT23
8 TDFN-EP*
8 SOT23
8 TDFN-EP*
8 SOT23
8 TDFN-EP*
Features
TOP MARK
AAEW
AAFC
AAFA
+AFR
+AFN
AAEY
+AFP
+AFT
1

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MAX1288ETA+T Summary of contents

Page 1

... SPI-/QSPI-/MICROWIRE-Compatible Interface for DSPs and Processors o Internal Conversion Clock o 8-Pin SOT23 and 8-Pin TDFN Packages Applications PART MAX1286EKA-T MAX1286ETA+T MAX1287EKA-T MAX1287ETA+T MAX1288EKA-T MAX1288ETA+T MAX1289EKA-T MAX1289ETA Note: All devices specified over the -40°C to +85°C operating range . + Denotes a lead(Pb)-free/RoHS-compliant package . MAX1286– ...

Page 2

Single-Ended, and 1-Channel True-Differential ADCs ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V DD CNVST, SCLK, DOUT to GND....................-0. REF, AIN1 (AIN+), AIN2 (AIN-) to GND......-0. Maximum Current into Any Pin............................................50mA Continuous ...

Page 3

Single-Ended, and ELECTRICAL CHARACTERISTICS (continued +2.7V to +3.6V +2.5V for MAX1287/MAX1289 REF 0.1µF capacitor at REF 8MHz (50% duty cycle), AIN- = GND for MAX1288/MAX1289. T SCLK noted. ...

Page 4

Single-Ended, and 1-Channel True-Differential ADCs TIMING CHARACTERISTICS (Figures 1, 2, and +2.7V to +3.6V +2.5V, 0.1µF capacitor at REF REF 0.1µF capacitor at REF 8MHz (50% duty ...

Page 5

Single-Ended, and (V = +3V +2.5V for MAX1287/MAX1289 REF f = 8MHz (50% duty cycle); AIN- = GND for MAX1288/MAX1289, T SCLK INTEGRAL NONLINEARITY vs. OUTPUT CODE 1.0 MAX1287/MAX1289 0.8 0.6 0.4 0.2 ...

Page 6

Single-Ended, and 1-Channel True-Differential ADCs (V = +3V +2.5V for MAX1287/MAX1284 REF f = 8MHz (50% duty cycle); AIN- = GND for MAX1288/MAX1289, T SCLK SHUTDOWN CURRENT vs. TEMPERATURE 300 250 200 150 ...

Page 7

Single-Ended, and NAME PIN MAX1286 MAX1288 MAX1287 MAX1289 Positive Supply Voltage. +2.7V to +3.6V (MAX1287/MAX1289); +4.75V to +5.25V (MAX1286/MAX1288). Bypass with a 0.1µF capacitor to GND. 2 AIN1 AIN+ Analog Input Channel ...

Page 8

Single-Ended, and 1-Channel True-Differential ADCs REF DAC AIN2 GND AIN1 (AIN+) CIN+ HOLD CIN- RIN- GND (AIN-) HOLD TRACK ARE FOR MAX1288/MAX1289 Figure 4. Equivalent Input Circuit where R = 1.5kΩ, R ...

Page 9

Single-Ended, and t CONV t ACQ CNVST 1 SCLK B11 DOUT MSB HIGH-Z SAMPLING INSTANT Figure 5a. Single Conversion AIN1 vs. GND (MAX1286/MAX1287), Unipolar Mode AIN+ vs. AIN- (MAX1288/MAX1289) t CONV t ACQ CNVST 1 SCLK B11 ...

Page 10

Single-Ended, and 1-Channel True-Differential ADCs Output Data Format Figures 5a and 5b illustrate the conversion timing for the MAX1286–MAX1289. The 12-bit conversion result is out- put in MSB-first format. Data on DOUT transitions on the falling edge ...

Page 11

Single-Ended, and 5) Activate SCLK for a minimum of 12 rising clock edges. DOUT transitions on SCLK’s falling edge and is available in MSB-first format. Observe the SCLK to DOUT valid timing characteristic. Clock data into the ...

Page 12

Single-Ended, and 1-Channel True-Differential ADCs CNVST 1ST BYTE READ 1 SCLK B11 DOUT B10 B9 B8 MSB SAMPLING INSTANT Figure 8c. SPI/MICROWIRE Interface Timing Sequence (CPOL = CPHA = 0) Layout, Grounding, and Bypassing For best performance, ...

Page 13

Single-Ended, and CNVST 1 SCLK B11 DOUT B10 B9 MSB SAMPLING INSTANT Figure 9b. QSPI Interface Timing Sequence (CPOL = CPHA = SCLK DOUT CNVST MAX1286– MAX1289 GND Figure 10a. SPI Interface Connection for ...

Page 14

Single-Ended, and 1-Channel True-Differential ADCs SUPPLIES + 5Ω 0.1µF GND V DD MAX1286– MAX1289 *OPTIONAL Figure 11. Power-Supply and Grounding Connections Aperture Definitions Aperture jitter ( the sample-to-sample variation in AJ ...

Page 15

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2010 Maxim Integrated Products ...

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