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PDF MAX11262 Data sheet ( Hoja de datos )
| Número de pieza | MAX11262 | |
| Descripción | SAR ADC | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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EVALUATION KIT AVAILABLE
MAX11262
14-Bit, 500ksps, +5V Unipolar Input,
SAR ADC, in Tiny 10-Pin µMAX
General Description
The MAX11262 is a 14-bit, 500ksps, +5V unipolar pseu-
do-differential input SAR ADC offering excellent AC and
DC performance in a small standard package.
This ADC typically achieves 85.4dB SNR, -102dB THD,
and ±0.2 LSB INL (typ), ±0.12 LSB DNL (typ). The
MAX11262 guarantees 14-bit no-missing codes.
The MAX11262 communicates using an SPI-compatible
serial interface at 2.3V, 3.3V, or 5V logic.
The serial interface can be used to daisy-chain multiple
ADCs for multichannel applications and provides a busy
indicator option for simplified system synchronization and
timing.
The MAX11262 is offered in a 10-pin, 3mm x 5mm,
µMAXM package and is specified over the -40NC to +85NC
temperature range.
Applications
● Industrial Process Control
● Medical Instrumentation
● Test and Measurements
● Automatic Test Equipment
● Narrowband Receivers
Selector Guide and Ordering Information appear at end of
data sheet.
Typical Operating Circuit
VDD
(5V)
1µF
VOVDD
(2.3V TO 5V)
1µF
0 TO +5V
MAX9632
10Ω
4.7nF, C0G
Ceramic
AIN+
AIN-
REF
REF
10µF
14-BIT ADC
INTERFACE AND CONTROL
SCLK
SDI
SDO
CNVST
HOST
CONTROLLER
MAX11262
GND
Benefits and Features
● High DC/AC Accuracy Improves Measurement
Quality
• 14-Bit Resolution with No Missing Codes
• 500ksps Throughput Rates Without Pipeline
Delay/Latency
• 85.4dB SNR and -102dB THD at 10kHz
• 0.1 LSBRMS Input-Referred Noise
• ±0.12 LSB DNL (typ) and ±0.2 LSB INL (typ)
● Wide Supply Range and Low Power Simplify Power-
Supply Design
• 5V Analog Supply
• 2.3V to 5V Digital Supply
• 24mW Power Consumption at 500ksps
• 10μA in Shutdown Mode
● Multi-Industry Standard Serial Interface and Small
Package Reduces Size
• SPI/QSPI™/MICROWIRE®/DSP-Compatible
Serial Interface
• 3mm x 5mm, Tiny 10-Pin µMAX Package
μMAX is registered trademark of Maxim Integrated Products, Inc.
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corporation.
14-Bit to 18-Bit SAR ADC Family
±5V Input
Internal
Reference
0 to 5V
Input
Internal
Reference
0 to 5V
Input
External
Reference
14-BIT
500ksps
16-BIT
250ksps
16-BIT
500ksps
18-BIT
500ksps
—
MAX11167 MAX11166 MAX11156
MAX11169 MAX11168 MAX11158
—
MAX11161 MAX11160 MAX11150
MAX11165 MAX11164 MAX11154
MAX11262 MAX11163 MAX11162 MAX11152
19-7061; Rev 1; 1/15
1 page  
MAX11262
14-Bit, 500ksps, +5V Unipolar Input,
SAR ADC, in Tiny 10-Pin µMAX
Electrical Characteristics (continued)
(VDD = 4.75V to 5.25V, VOVDD = 2.3V to 5.25V, fSAMPLE = 500ksps, VREF = 5V; TA = TMIN to TMAX, unless otherwise noted. Typical
values are at TA = +25NC.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
SDI Valid Setup Time from CNVST
Rising Edge
tSSDICNV 4-wire CS mode
5 ns
SDI Valid Hold Time from SCLK
Rising Edge
tHSDISCK 4-wire CS mode
0 ns
SCLK Valid Setup Time from CNVST
Rising Edge
tSSCKCNV
Daisy-chain mode
3 ns
SCLK Valid Hold Time from CNVST
Rising Edge
tHSCKCNV Daisy-chain mode
0 ns
SDI Valid Setup Time from SCLK
Falling Edge
tSSDISCK Daisy-chain mode
6 ns
SDI Valid Hold Time from SCLK
Falling Edge
tHSDISCK Daisy-chain mode
0 ns
SDI High to SDO High
tDSDOSDI
Daisy-chain mode
with busy indicator
VOVDD > 4.5V
VOVDD > 2.3V
15
ns
20
Note 2: Maximum and minimum limits are fully production tested over the specified supply voltage range and at a temperature of
+25°C and +85°C. Limits below +25°C are guaranteed by design and device characterization.
Note 3: See the Analog Inputs and Overvoltage Input Clamps sections.
Note 4: See the Definitions section.
Note 5: Guaranteed by design.
Note 6: Defined as the change in positive full-scale code transition caused by a Q5% variation in the VDD supply voltage.
Note 7: 10kHz sine wave input, -0.1dB below full scale.
Note 8: fIN1 ~ 9.4kHz, fIN2 ~ 10.7kHz, Each tone at -6.1dB below full scale.
Note 9: CLOAD = 65pF on SDO.
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX11262
Pin Configuration
14-Bit, 500ksps, +5V Unipolar Input,
SAR ADC, in Tiny 10-Pin µMAX
TOP VIEW
REF
VDD
AIN+
AIN-
GND
1+
2
3 MAX11262
4
5
10
9
8
7
6
µMAX
OVDD
SDI
SCLK
SDO
CNVST
Pin Description
PIN NAME
FUNCTION
1
REF
External Reference Input. Bypass to GND in close proximity with a X5R or X7R 10μF 16V capacitor. See the
Layout, Grounding, and Bypassing section.
2
VDD
Analog Power Supply. Bypass VDD to GND with a 0.1µF capacitor as close as possible to each device and
one 10µF capacitor per board.
3 AIN+ Positive Analog Input
4 AIN- Negative Analog Input. Connect AIN- to the analog ground plane or to a remote sense ground.
5 GND Power-Supply Ground
Conversion Start Input. The rising edge of CNVST initiates the conversions and selects the interface mode:
6 CNVST daisy-chain or CS. In CS mode, set CNVST low to enable the SDO output. In daisy-chain mode, read the data
when CNVST is high.
7 SDO Serial Data Output. SDO transitions on the falling edge of SCLK.
8 SCLK Serial Clock Input. Clocks data out of the serial interface when the device is selected.
Serial Data Input and Mode Select Input. Daisy-chain mode is selected if SDI is low during the CNVST rising
edge. In this mode, SDI is used as a data input to daisy-chain the conversion results of two or more ADCs
9 SDI onto a single SDO line. CS mode is selected if SDI is high during the CNVST rising edge. In this mode, either
SDI or CNVST can enable the serial output signals when low. If SDI or CNVST is low when the conversion is
completed, the busy indicator feature is enabled.
10
OVDD
Digital Power Supply. OVDD can range from 2.3V to VDD. Bypass OVDD to GND with a 0.1µF capacitor for
each device and one 10µF per board.
www.maximintegrated.com
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet MAX11262.PDF ] | |
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