Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- ELECTRICAL CHARACTERISTICS: AVDD = 5V
- ELECTRICAL CHARACTERISTICS: AVDD = 3V
- DIGITAL CHARACTERISTICS: TMIN to TMAX, DVDD = 2.7V to 5.25V
- FLASH CHARACTERISTICS: TMIN to TMAX, DVDD = 2.7V to 5.25V, unless otherwise specified.
- PIN CONFIGURATION
- TIMING SPECIFICATIONS
- TIMING SPECIFICATION TABLE
- TIMING SPECIFICATION TABLE
- TYPICAL CHARACTERISTICS
- OVERVIEW
- INPUT MULTIPLEXER
- TEMPERATURE SENSOR
- BURNOUT CURRENT SOURCES
- INPUT BUFFER
- IDAC1 AND IDAC2
- PGA
- PGA OFFSET DAC
- MODULATOR
- VOLTAGE REFERENCE INPUT
- ON-CHIP VOLTAGE REFERENCE
- VRCAP PIN
- CLOCK GENERATOR
- CALIBRATION
- DIGITAL FILTER
- DIGITAL I/O INTERFACE
- SERIAL PERIPHERAL INTERFACE
- DATA READY
- DSYNC OPERATION
- MEMORY
- REGISTER BANK
- RAM
- FLASH
- REGISTER MAP
- COMMAND DEFINITIONS
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0.5
0.4
0.3
0.2
0.1
0
−
0.1
−
0.2
−
0.3
−
0.4
−
0.5
IDAC Code
0 25532 64 96 128 160 192 224
INL (LSB)
0.5
0.4
0.3
0.2
0.1
0
−
0.1
−
0.2
−
0.3
−
0.4
−
0.5
IDAC Code
0 25532 64 96 128 160 192 224
DNL (LSB)
ADS1218
SBAS187C – SEPTEMBER 2001 – REVISED SEPTEMBER 2005
TYPICAL CHARACTERISTICS (continued)
AV
DD
= +5V, DV
DD
= +5V, f
OSC
= 2.4576MHz, PGA = 1, R
DAC
= 150k Ω , V
REF
≡ (REF IN+) – (REF IN–) = +2.5V, and
f
DATA
= 10Hz, unless otherwise specified.
IDAC DIFFERENTIAL NONLINEARITY IDAC INTEGRAL NONLINEARITY
RANGE = 1, R
DAC
= 150k Ω , V
REF
= 2.5V RANGE = 1, R
DAC
= 150k Ω , V
REF
= 2.5V
Figure 23. Figure 24.
15