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Maxim Integrated Semiconductor Electronic Components Datasheet


MAX1116

(MAX1115 / MAX1116) Single-Supply / Low-Power / Serial 8-Bit ADCs



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MAX1116 pdf
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, VDD 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 VREF
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-
PACKAGE
8 SOT23
8 SOT23
TOP
MARK
AADU
AADV
Pin Configuration
TOP VIEW
VDD 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.



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MAX1116 pdf
Single-Supply, Low-Power, Serial 8-Bit ADCs
ABSOLUTE MAXIMUM RATINGS
VDD to GND ...........................................................-0.3V to +6.0V
CH0 to GND ...............................................-0.3V to (VDD + 0.3V)
Digital Output to GND ................................-0.3V to (VDD + 0.3V)
Digital Input to GND ..............................................-0.3V to +6.0V
Maximum Current into Any Pin .........................................±50mA
Continuous Power Dissipation (TA = +70°C)
8-Pin SOT23 (derate 8.9mW/°C above +70°C)............714mW
Operating Temperature Range
MAX111_EKA ..................................................-40°C to + 85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = +2.7V to +3.6V (MAX1115), VDD = +4.5V to +5.5V (MAX1116), TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
DC ACCURACY
Resolution
8
Relative Accuracy
Differential Nonlinearity
INL
DNL
(Note 1)
±1
±1
Offset Error
Gain Error
0.5
±5
Gain Temperature Coefficient
90
VDD/2 Sampling Error
±2 ±7
DYNAMIC PERFORMANCE (25kHz sine-wave input, VIN = VREF (P-P), fSCLK = 5MHz, fSAMPLE = 100ksps, RIN = 100)
Signal-to-Noise Plus Distortion
SINAD
48
Total Harmonic Distortion
(up to the 5th Harmonic)
THD
-69
Spurious-Free Dynamic Range
SFDR
66
Small-Signal Bandwidth
ANALOG INPUT
f-3dB
4
Input Voltage Range
Input Leakage Current
Input Capacitance
INTERNAL REFERENCE
VCH = 0 or VDD
CIN
0 VREF
±0.7 ±10
18
Voltage
VREF
MAX1115
MAX1116
2.048
4.096
POWER REQUIREMENTS
Supply Voltage
MAX1115
VDD MAX1116
2.7 5.5
4.5 5.5
Supply Current (Note 2)
MAX1115
fSAMPLE = 10ksps
fSAMPLE = 100ksps
IDD fSAMPLE = 10ksps
MAX1116
fSAMPLE = 100ksps
Shutdown
14 21
135 190
19 25
182 230
0.8 10
UNITS
Bits
LSB
LSB
LSB
%FSR
ppm/°C
%
dB
dB
dB
MHz
V
µA
pF
V
V
µA
2 _______________________________________________________________________________________



Part Number MAX1116
Description (MAX1115 / MAX1116) Single-Supply / Low-Power / Serial 8-Bit ADCs
Maker Maxim - Maxim
Total Page 12 Pages
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