MAX1115 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Single-Supply, Low-Power, Serial 8-Bit ADCs

19-1822; Rev 1; 2/02
Single-Supply, Low-Power, Serial 8-Bit ADCs
General Description
The MAX1115/MAX1116 low-power, 8-bit, analog-to-
digital converters (ADCs) feature an internal track/hold
(T/H), voltage reference, V_DD monitor, clock, and serial
interface. The MAX1115 is specified from +2.7V to
+5.5V, and the MAX1116 is specified from +4.5V to
+5.5V. Both parts consume only 175µA at 100ksps.
The full-scale analog input range is determined by the
internal reference of +2.048V (MAX1115) or +4.096V
(MAX1116). The MAX1115/MAX1116 also feature
AutoShutdown™ power-down mode which reduces
power consumption to <1µA when the device is not in
use. The 3-wire serial interface directly connects to
SPI™, QSPI™, and MICROWIRE™ devices without
external logic. Conversions up to 100ksps are per-
formed using an internal clock.
The MAX1115/MAX1116 are available in an 8-pin
SOT23 package with a footprint that is just 30% of an
8-pin SO.
Features
o Single Supply
+2.7V to +3.6V (MAX1115)
+4.5V to +5.5V (MAX1116)
o Input Voltage Range: 0 to V_REF
o Internal Track/Hold; 100kHz Sampling Rate
o Internal Reference
+2.048V (MAX1115)
+4.096V (MAX1116)
o SPI/QSPI/MICROWIRE-Compatible Serial Interface
o Small 8-Pin SOT23 Package
o Automatic Power-Down
o Low Power
175µA at 100ksps
18µA at +3V and 10ksps
1µA in Power-Down Mode
________________________Applications
Low-Power, Hand-Held Portable Devices
System Diagnostics
Battery-Powered Test Equipment
Receive-Signal-Strength Indicators
4mA to 20mA Powered Remote Data-Acquisition
Systems
AutoShutdown is a trademark of Maxim Integrated Products.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor, Corp.
PART
MAX1115EKA
MAX1116EKA
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-
PA CK A G E
8 SOT23
8 SOT23
TO P
MARK
AADU
AADV
Pin Configuration
TOP VIEW
V_DD 1
CH0 2
I.C. 3
GND 4
MAX1115
MAX1116
SOT23
8 SCLK
7 DOUT
6 CONVST
5 I.C.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.