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PDF MAX11259 Data sheet ( Hoja de datos )
| Número de pieza | MAX11259 | |
| Descripción | Delta-Sigma ADC | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX11259 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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MAX11259
EVALUATION KIT AVAILABLE
24-Bit, 6-Channel, 16ksps, 6.2nV/√Hz PGA,
Delta-Sigma ADC with I2C Interface
General Description
The MAX11259 is a 6-channel, 24-bit delta-sigma ADC
that achieves exceptional performance while consuming
very low power. Sample rates up to 16ksps allow preci-
sion DC measurements. The MAX11259 communicates
via an I2C-compatible serial interface and is available in a
small (3mm x 3mm) WLP package.
The MAX11259 offers a 6.2nV/√Hz noise programmable
gain amplifier (PGA) with gain settings from 1x to 128x.
The integrated PGA provides isolation of the signal inputs
from the switched capacitor sampling network. The PGA
also enables the MAX11259 to interface directly with
high-impedance sources without compromising available
dynamic range.
The MAX11259 operates from a single 2.7V to 3.6V
analog supply, or split ±1.8V analog supplies, allowing
the analog input to be sampled below ground. The digital
supply range is 1.7V to 2.0V or 2.0V to 3.6V, allowing
communication with 1.8V, 2.5V, 3V, or 3.3V logic.
Applications
●● Wearable Electronics
●● Weigh Scales
●● Pressure Sensors
●● Battery-Powered Instrumentation
Typical Application Circuit
Benefits and Features
●● High Resolution for Industrial Applications that
Require a Wide Dynamic Range
• 133dB SNR at 50sps
• 124dB SNR at 1000sps
●● Longer Battery Life for Portable Applications
• 2.2mA Operating Mode Current
• 1μA Sleep Current
●● Single or Split Analog Supplies Provide Input Voltage
Range Flexibility
• 2.7V to 3.6V (Single Supply) or ±1.8V (Split Supply)
●● Enables System Integration
• Low Noise, 6.2nV/√Hz PGA with Gains of 1, 2, 4,
8, 16, 32, 64, 128
• 6-Channel, Fully Differential Input
●● Enables On-Demand Device and System Gain and
Offset Calibration
• User-Programmable Offset and Gain Registers
●● Robust Performance in a Small Package
• -40°C to +125°C Operating Temperature Range
• WLP Package, 3mm x 3mm (6 x 6 Ball Array)
2.7V TO 3.6V
REF
10nF 1µF 2.0V TO 3.6V
1nF
C0G
AIN0N
AIN5P
1nF
C0G
AIN0P
REFN REFP
AVDD
MAX11259
DVDD
RSTB
ADR0
SCL
ADR1
SDA
RDYB
AIN5N
GPO0 GPO1 GPOGND CAPP CAPN CAPREG AVSS
220nF
0603
X7R
1nF
C0G
RESISTIVE BRIDGE MEASUREMENT CIRCUIT, I2C CONFIGURATION
DGND
1µF
µC
19-7749; Rev 0; 9/15
1 page  
MAX11259
24-Bit, 6-Channel, 16ksps, 6.2nV/√Hz PGA,
Delta-Sigma ADC with I2C Interface
Electrical Characteristics (continued)
(VAVDD = 3.6V, VAVSS = 0V, VDVDD = 2.0V to 3.6V, VREFP - VREFN = VAVDD, DATA RATE = 1ksps, PGA low-noise mode, single-cycle
conversion mode (SCYCLE = 1). TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)(Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Reference Differential
Input Resistance
RREF
Active state
26 kΩ
Reference Differential
Input Current
Input Capacitance
AIN_P, AIN_N Sampling
Rate
IREF_PD
CIN
CPGAIN
fS
STANDBY and SLEEP state
Direct (PGA bypassed)
PGA
±1
2.5
0.25
4.096
nA
pF
MHz
Reference Voltage
Range (REFP, REFN)
Differential Reference
Voltage Range (REFP
- REFN)
VREF(RNG) (Note 7)
VREF
VAVDD
V
1.5
VAVDD
V
REFP, REFN Sampling
Rate
4.096
MHz
SENSOR FAULT DETECT CURRENTS
Current
Initial Tolerance
Drift
DIGITAL SINC FILTER RESPONSE
Bandwidth (-3dB)
Settling Time (Latency)
LOGIC INPUTS
Input Voltage Range
Input Current
Input Low Voltage
VIN
IDIGILEAK
VIL
For SDA and SCL bumps
Leakage current
Input High Voltage
Input Hysteresis
GPIO Input Low Voltage
GPIO Input High
Voltage
VIH
VHYS
VIL_GPIO
VIH_GPIO
1.1
±10
0.3
0.203
x DATA
RATE
5/DATA
RATE
0
0.7 x
VDVDD
200
1.2
VDVDD
±1
0.3 x
VDVDD
0.3
µA
%
%/°C
Hz
s
V
µA
V
V
mV
V
V
GPIO Input Hysteresis VHYS_GPIO
20 mV
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX11259
24-Bit, 6-Channel, 16ksps, 6.2nV/√Hz PGA,
Delta-Sigma ADC with I2C Interface
Typical Operating Characteristics (continued)
(VAVDD = +3.6V, VAVSS = 0V, VDVDD = +2.0V, VREFP - VREFN = VAVDD; TA = TMIN to TMAX, LDO enabled, PGA enabled, unless oth-
erwise noted. Data rate = 1ksps, single-cycle conversion mode (SCYCLE = 1) Typical values are at TA = +25°C.)
2.5
2
1.5
1
0.5
0
2.7
SLEEP CURRENT
vs. AVDD VOLTAGE
toc19
TA = +125°C
TA = -40°C
TA = +25°C
3 3.3
VAVDD (V)
3.6
STANDBY CURRENT
vs. AVDD VOLTAGE
toc20
2.8
TA = +125°C
2.3
1.8
TA = -40°C
1.3
0.8
0.3
2.7
TA = +25°C
3 3.3
VAVDD (V)
3.6
ACTIVE CURRENT
vs. DVDD VOLTAGE
750 LDO ENABLED
toc21
730 TA = +125°C
710
690
670
650
630 TA = +25°C
610
TA = -40°C
590
2
2.4 2.8 3.2
VDVDD (V)
3.6
1.4
1.2
1
0.8
0.6
0.4
0.2
2
SLEEP CURRENT
vs. DVDD VOLTAGE
toc22
LDO DISABLED
TA = -40°C
TA = +125°C
TA = +25°C
2.4 2.8
VDVDD (V)
3.2
3.6
STANDBY CURRENT
90
vs. DVDD VOLTAGE
toc23
TA = +125°C
LDO ENABLED
80
70
60
TA = -40°C
50
TA = +25°C
40
2
2.4 2.8 3.2
VDVDD (V)
3.6
0
-20
-40
-60
-80
-100
-120
-140
-160
-180
0
OUTPUT SPECTRUM
SHORTED INPUTS
toc24
BYPASS MODE
SINGLE CYCLE CONTINOUS
fsample = 1ksps
100 200 300
FREQUENCY (Hz)
400
500
0
-20
-40
-60
-80
-100
-120
-140
0
THD
vs. FREQUENCY
toc25
BYPASS MODE
CONTINUOUS
fsample = 8ksps
200 400 600
FREQUENCY (Hz)
800
1000
120
120
119
119
118
118
117
117
116
116
115
-40
SNR
vs. TEMPERATURE
toc26
BYPASS MODE
SINGLE CYCLE CONTINUOUS
fsample = 1ksps
10 60
TEMPERATURE (ºC)
110
www.maximintegrated.com
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX11259.PDF ] | |
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