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PDF MAX1118 Data sheet ( Hoja de datos )
| Número de pieza | MAX1118 | |
| Descripción | Single-Supply / Low-Power / 2-Channel / Serial 8-Bit ADCs | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX1118 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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19-1857; Rev 0; 11/00
Single-Supply, Low-Power,
2-Channel, Serial 8-Bit ADCs
General Description
The MAX1117/MAX1118/MAX1119 low-power, 8-bit,
dual-channel, analog-to-digital converters (ADCs) fea-
ture an internal track/hold (T/H) voltage reference
(MAX1117/MAX1119), clock, and serial interface. The
MAX1118 is specified from +2.7V to +5.5V and con-
sumes only 135µA at 100ksps. The MAX1117 is speci-
fied from +2.7V to +3.6V, and the MAX1119 is specified
from +4.5V to +5.5V, each consumes only 175µA at
100ksps.
The full-scale analog input range is determined by the
internal reference of +2.048V (MAX1117) or +4.096V
(MAX1119), or by an externally applied reference rang-
ing from +1V to VDD (MAX1118). All devices feature an
automatic shutdown mode that reduces supply current
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 performed using an
internal clock.
The MAX1117/MAX1118/MAX1119 are available in an
8-pin SOT23 package with a footprint that is only 11%
of an 8-pin plastic DIP.
Features
o Single Supply
+2.7V to +3.6V (MAX1117)
+2.7V to +5.5V (MAX1118)
+4.5V to +5.5V (MAX1119)
o Internal Track/Hold: 100kHz Sampling Rate
o Internal Reference
+2.048V (MAX1117)
+4.096V (MAX1119)
o Reference Input Range: 0 to VDD (MAX1118)
o SPI/QSPI/MICROWIRE-Compatible Serial Interface
o Small 8-Pin SOT23 Package
o Automatic Power-Down
o Analog Input Range: 0 to VREF
o Low Power
175µA at 100ksps (typ) (MAX1117/MAX1119)
135µA at 100ksps (typ) (MAX1118)
18µA at 10ksps (typ)
1µA (typ) in Power-Down Mode
________________________Applications
Low-Power, Handheld Portable Devices
System Diagnostics
Battery-Powered Test Equipment
Solar-Powered Remote Systems
Receive Signal Strength Indicators
4mA to 20mA Powered Remote Data Acquisition
Systems
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor, Corp.
Functional Diagram appears at end of data sheet.
Ordering Information
PART
MAX1117EKA
MAX1118EKA
MAX1119EKA
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 SOT23
8 SOT23
8 SOT23
TOP
MARK
AADW
AADX
AADY
Pin Configuration
TOP VIEW
VDD 1
CHO 2
CH1 3
GND 4
( ) ARE FOR MAX1118 ONLY
MAX1117
MAX1118
MAX1119
SOT23
8 SCLK
7 DOUT
6 CNVST
5 (REF) I.C
________________________________________________________________ Maxim Integrated Products 1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
Single-Supply, Low-Power,
2-Channel, Serial 8-Bit ADCs
Typical Operating Characteristics (continued)
(VDD = +3V (MAX1117), VDD = +5V (MAX1119), VDD = VREF = +3V (MAX1118), fSCLK = 5MHz, fSAMPLE = 100ksps, CLOAD = 100pF,
TA = +25°C, unless otherwise noted.)
MAX1117/MAX1119
SUPPLY CURRENT vs. CONVERSION RATE
100.0
MAX1117/MAX1119 SUPPLY CURRENT
vs. SUPPLY VOLTAGE
200
MAX1117/MAX1119
SUPPLY CURRENT vs. TEMPERATURE
200
MAX1119
10.0 VDD = +5V
1.0 MAX1117
VDD = +3V
0.1
0.01
5.5
0.1 1 10
CONVERSION (ksps)
CONVERSION TIME
vs. SUPPLY VOLTAGE
100
5.4
5.3
5.2
5.1
5.0
2.5
3.5 4.5
SUPPLY VOLTAGE (V)
5.5
MAX1118
GAIN ERROR vs. SUPPLY VOLTAGE
0.4 VREF = 2.048V
0.2
0
-0.2
-0.4
2.5
3.5 4.5
SUPPLY VOLTAGE (V)
5.5
150
100 MAX1117
MAX1119
50
DOUT = 00000000
VDD = VDIGITAL INPUTS
0
2.5
3.5 4.5
SUPPLY VOLTAGE (V)
CONVERSION TIME
vs. TEMPERATURE
5.5
5.5
5.4
VDD = +3V
5.3
5.2
VDD = +5V
5.1
5.0
-40
-15 10 35 60
TEMPERATURE (°C)
85
MAX1118
GAIN ERROR vs. TEMPERATURE
0.5
0.4 VDD = +3V
VREF = 2.048V
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-40
-15 10 35 60
TEMPERATURE (°C)
85
150
MAX1119
VDD = +5V
MAX1117
100 VDD = +3V
50
DOUT = 00000000
VDD = VDIGITAL INPUTS
0
-40 -15 10 35 60
TEMPERATURE (V)
85
FFT PLOT
0
-20
-40
-60
-80
-100
-120
0
10k 20k 30k 40k
ANALOG INPUT FREQUENCY (Hz)
50k
MAX1118
GAIN ERROR vs. REFERENCE VOLTAGE
0
VDD = +5.5V
-0.2
-0.4
-0.6
-0.8
-1.0
1
2 34
REFERENCE VOLTAGE (V)
5
_______________________________________________________________________________________ 5
5 Page 
Single-Supply, Low-Power,
2-Channel, Serial 8-Bit ADCs
ACTIVE
tcsh
CH0
CNVST
CH1
tconv
POWER-DOWN MODE
tch tcp
tcsl
CH0 CH1
tccs
SCLK
tcsd
DOUT
IDLE LOW
IDLE LOW
tcd tcl tchz
D7 (MSB) D6 D5 D4 D3 D2 D1 D0
Figure 6c. Conversion and Interface Timing, Conversion on CH1 with SCLK Idle Low
ACTIVE
tcsh
CH0
CNVST
CH1
tconv
SCLK
IDLE HIGH
POWER-DOWN MODE
tch tcp
tcsl
CH0 CH1
tccs
IDLE HIGH
tcsd tcd tcl tchz
DOUT D7 (MSB) D6 D5 D4 D3 D2 D1 D0
Figure 6d. Conversion and Interface Timing, Conversion on CH1 with SCLK Idle High
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MAX1118.PDF ] | |
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