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PDF MAX11205 Data sheet ( Hoja de datos )
| Número de pieza | MAX11205 | |
| Descripción | Delta- Sigma ADC with 2-Wire Serial Interface | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-5238; Rev 0; 4/10
www.DataSheet4U.com
16-Bit, Single-Channel, Ultra-Low Power,
Delta-Sigma ADC with 2-Wire Serial Interface
General Description
The MAX11205 is an ultra-low-power (< 300FA max
active current), high-resolution, serial-output ADC. This
device provides the highest resolution per unit power
in the industry, and is optimized for applications that
require very high dynamic range with low power such as
sensors on a 4mA to 20mA industrial control loop. The
MAX11205 provides a high-accuracy internal oscillator
that requires no external components.
When used with the specified data rates, the internal
digital filter provides more than 80dB rejection of 50Hz or
60Hz line noise. The MAX11205 provides a simple 2-wire
serial interface in the space-saving, 10-pin FMAXM pack-
age. The MAX11205 operates over the -40NC to +85NC
temperature range.
Applications
Sensor Measurement (Temperature and
Pressure)
Portable Instrumentation
Battery Applications
Weigh Scales
Features
S 16-Bit Full-Scale Resolution
S 720nVRMS Noise (MAX11205B)
S 3ppm INL
S No Missing Codes
S Ultra-Low-Power Dissipation
Operating-Mode Current Drain < 300µA (max)
Sleep-Mode Current Drain < 0.1µA
S 2.7V to 3.6V Analog Supply Voltage Range
S 1.7V to 3.6V Digital and I/O Supply Voltage Range
S Fully Differential Signal Inputs
S Fully Differential Reference Inputs
S Internal System Clock
2.4576MHz (MAX11205A)
2.2528MHz (MAX11205B)
S External Clock
S Serial 2-Wire Interface (Clock Input and Data Input)
S On-Demand Offset and Gain Self-Calibration
S -40°C to +85°C Operating Temperature Range
S ±2kV ESD Protection
S Lead(Pb)-Free and RoHS-Compliant µMAX
Package
Ordering Information
PART
PIN-PACKAGE
OUTPUT RATE
(sps)
MAX11205AEUB+*
MAX11205BEUB+
10 FMAX
10 FMAX
120
13.75
Note: All devices are specified over the -40NC to +85NC oper-
ating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Future product—contact factory for availability.
RESOLUTION
(BITS)
24
20
18
16
4-WIRE SPI, 16-PIN QSOP,
PROGRAMMABLE GAIN
MAX11210
MAX11206
MAX11209
MAX11213
4-WIRE SPI,
16-PIN QSOP
MAX11200
MAX11207
MAX11211
MAX11203
Selector Guide
2-WIRE SERIAL,
10-PIN μMAX
MAX11201 (with buffers)
MAX11202 (without buffers)
MAX11208
MAX11212
MAX11205
µMAX is a registered trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
www.DataSheet4U.com
16-Bit, Single-Channel, Ultra-Low Power,
Delta-Sigma ADC with 2-Wire Serial Interface
Typical Operating Characteristics
(VAVDD = 3.6V, VDVDD = 1.8V, VREFP - VREFN = VAVDD; internal clock; TA = TMIN to TMAX, unless otherwise noted. Typical values
are at TA = +25NC.)
ANALOG ACTIVE CURRENT
vs. AVDD VOLTAGE (MAX11205A)
240
VDVDD = 1.8V
220
TA = +85°C
200
180 TA = +25°C
160 TA = -45°C
140
120
100
2.70 2.85 3.00 3.15 3.30 3.45 3.60
AVDD VOLTAGE (V)
ACTIVE SUPPLY CURRENT
vs. TEMPERATURE (MAX11205A)
300
250
TOTAL
200
VAVDD = 3.6V
150
100
VDVDD = 1.8V
50
0
-45 -25 -5 15 35 55 75 95
TEMPERATURE (°C)
DIGITAL ACTIVE CURRENT
vs. DVDD VOLTAGE
130
VAVDD = 3.6V
120 TA = +85°C, +25°C, -45°C
110
100 MAX11205A
90
80
70 MAX11205B
60
50
40
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
DVDD VOLTAGE (V)
ANALOG ACTIVE CURRENT
vs. AVDD VOLTAGE (MAX11205B)
240
VDVDD = 1.8V
220
TA = +85°C
200
180 TA = +25°C
160 TA = -45°C
140
120
100
2.70 2.85 3.00 3.15 3.30 3.45 3.60
AVDD VOLTAGE (V)
ACTIVE SUPPLY CURRENT
vs. TEMPERATURE (MAX11205B)
300
250
TOTAL
200
VAVDD = 3.6V
150
100
50 VDVDD = 1.8V
0
-45 -25 -5 15 35 55 75 95
TEMPERATURE (°C)
DIGITAL SLEEP CURRENT vs. DVDD
VOLTAGE (MAX11205A/MAX11205B)
3.0
VAVDD = 3.6V
2.5 TA = -45°C
2.0 TA = +25°C
1.5
1.0
TA = +85°C
0.5
0
1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5
DVDD VOLTAGE (V)
ANALOG SLEEP CURRENT vs. AVDD
VOLTAGE (MAX11205A/MAX11205B)
1.0
VDVDD = 1.8V
0.8
0.6
0.4
0.2 TA = +85°C TA = -45°C
TA = +25°C
0
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
AVDD VOLTAGE (V)
SLEEP CURRENT vs. TEMPERATURE
(MAX11205A/MAX11205B)
1.0
VAVDD = 3.6V
VDVDD = 1.8V
0.8
0.6
0.4
0.2
VAVDD
VDVDD TOTAL
0
-45 -25 -5 15 35 55 75 95
TEMPERATURE (°C)
INTERNAL OSCILLATOR FREQUENCY
vs. TEMPERATURE
2.6
VDVDD = 1.8V
2.5 VAVDD = 3.0V
MAX11205A
2.4
2.3 MAX11205B
2.2
2.1
2.0
-45 -25 -5 15 35 55 75 95
TEMPERATURE (°C)
_______________________________________________________________________________________ 5
5 Page 
www.DataSheet4U.com
16-Bit, Single-Channel, Ultra-Low Power,
Delta-Sigma ADC with 2-Wire Serial Interface
SCLK
RDY/DOUT
t5
1
t3
t1
t2
23
D15 D14
CONVERSION IS DONE
DATA IS AVAILABLE
24
t4
0
t7
t6
CONVERSION IS DONE
DATA IS AVAILABLE
Figure 1. Timing Diagram for Data Read After Conversion
SCLK
12 3
RDY/DOUT
CONVERSION IS DONE
DATA IS AVAILABLE
D15 D14
24
0
25
25TH SLK RISING EDGE
PULLS RDY/DOUT
HIGH
CONVERSION IS DONE
DATA IS AVAILABLE
Figure 2. Timing Diagram for Data Read Followed by RDY/DOUT Being Asserted High Using 25th SCLK
SCLK
12 3
RDY/DOUT
CONVERSION IS DONE
DATA IS AVAILABLE
D15 D14
CALIBRATION STARTS ON 26TH SCLK
24 25 26
25TH SCLK PULLS
RDY/DOUT HIGH
0
12
D15 D14
CONVERSION IS DONE
DATA IS AVAILABLE AFTER CALIBRATION
t8
Figure 3. Timing Diagram for Data Read Followed by Two Extra Clock Cycles for Self-Calibration
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet MAX11205.PDF ] | |
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