MAX1240AESA Maxim, MAX1240AESA Datasheet
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MAX1240AESA
Manufacturer Part Number
MAX1240AESA
Description
+2.7V / Low-Power / 12-Bit Serial ADCs in 8-Pin SO
Manufacturer
Maxim
Datasheet
1.MAX1241CCPA.pdf
(15 pages)
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The MAX1240/MAX1241 low-power, 12-bit analog-to-
digital converters (ADCs) are available in 8-pin pack-
ages. The MAX1240 operates with a single +2.7V to
+3.6V supply, and the MAX1241 operates with a single
+2.7V to +5.25V supply. Both devices feature a 7.5µs
successive-approximation ADC, a fast track/hold
(1.5µs), an on-chip clock, and a high-speed, 3-wire ser-
ial interface.
Power consumption is only 37mW (V
73ksps maximum sampling speed. A 2µA shutdown
mode reduces power at slower throughput rates.
The MAX1240 has an internal 2.5V reference, while the
MAX1241 requires an external reference. The MAX1241
accepts signals from 0V to V
input range includes the positive supply rail. An exter-
nal clock accesses data from the 3-wire interface,
which connects directly to standard microcontroller I/O
ports. The interface is compatible with SPI™, QSPI™,
and MICROWIRE™.
Excellent AC characteristics and very low power com-
bined with ease of use and small package size make
these converters ideal for remote-sensor and data-
acquisition applications, or for other circuits with
demanding power consumption and space require-
ments. The MAX1240/MAX1241 are available in 8-pin
PDIP and SO packages.
19-1155; Rev 5; 8/10
SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.
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.
__________________General Description
TOP VIEW
Battery-Powered Systems
Portable Data Logging
Isolated Data Acquisition
Process Control
Instrumentation
SHDN
V
REF
________________________________________________________________ Maxim Integrated Products
AIN
DD
1
2
3
4
PDIP/SO
MAX1240
MAX1241
Pin Configuration
REF
, and the reference
Applications
8
7
6
5
DD
SCLK
CS
DOUT
GND
= 3V) at the
12-Bit Serial ADCs in 8-Pin SO
♦ Single-Supply Operation:
♦ 12-Bit Resolution
♦ Internal 2.5V Reference (MAX1240)
♦ Small Footprint: 8-Pin PDIP/SO Packages
♦ Low Power: 3.7µW (73ksps, MAX1240)
♦ Internal Track/Hold
♦ SPI/QSPI/MICROWIRE 3-Wire Serial Interface
♦ Internal Clock
Ordering Information continued at end of data sheet.
*Dice are specified at T
**Future product—contact factory for availability.
/V denotes an automotive qualified part.
+Denotes a lead(Pb)-free/RoHS-compliant package.
________________________________Features
MAX1240ACPA+
MAX1240BCPA+
MAX1240CCPA+
MAX1240ACSA+
MAX1240BCSA+
MAX1240CCSA+
MAX1240CC/D
MAX1240AESA/V+**
MAX1240BESA/V+
SCLK
SHDN
REF
AIN
CS
+2.7V to +3.6V (MAX1240)
+2.7V to +5.25V (MAX1241)
3mW (73ksps, MAX1241)
66µW (1ksps, MAX1241)
5µW (power-down mode)
PART*
7
8
3
2
4
+2.7V, Low-Power,
(MAX1240 ONLY)
2.5V REFERENCE
CONTROL
LOGIC
T/H
A
-40°C to +85°C 8 SO
-40°C to +85°C 8 SO
TEMP RANGE
= +25°C, DC parameters only.
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
0°C to +70°C
0°C to +70°C
Ordering Information
Functional Diagram
GND
5
V
12-BIT
DD
SAR
1
CLOCK
INT
8 PDIP
8 PDIP
8 PDIP
8 SO
8 SO
8 SO
Dice*
PA C K A G E
MAX1240
MAX1241
REGISTER
OUTPUT
SHIFT
PIN -
6
DOUT
(LSB)
±1/2
±1/2
±1/2
INL
±1
±1
±1
±1
±1
±1
1