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PDF MAX11960 Data sheet ( Hoja de datos )
| Número de pieza | MAX11960 | |
| Descripción | Differential SAR ADC | |
| Fabricantes | Maxim Integrated | |
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MAX11960
EVALUATION KIT AVAILABLE
Dual Simultaneous Sampling, 20-Bit, 1Msps,
Differential SAR ADC
General Description
The MAX11960 is a 20-bit, 1Msps, dual simultaneous
sampling, fully differential SAR ADC with internal reference
buffers. The MAX11960 provides excellent static and
dynamic performance with best-in-class power consumption
that directly scales with throughput. The device has a
unipolar differential ±VREF input range. Supplies include
a 3.3V supply for the reference buffers, a 1.8V analog
supply, a 1.8V digital supply, and a 1.5V to 3.6V digital
interface supply.
This ADC achieves 99dB SNR and -123dB THD, guarantees
20-bit resolution with no-missing codes and 5 LSB INL (max).
The MAX11960 communicates data using a SPI-
compatible serial interface. The MAX11960 is offered in a
32-pin, 5mm x 5mm, TQFN package and is specified over
the -40°C to +85°C operating temperature range.
Applications
●● Encoder and Resolver in Motion Control
●● Automatic Test Equipment
●● Medical Instrumentation
●● Process Control and Industrial Automation
●● Data Acquisition Systems
●● Telecommunications
●● Redundant Measurement
Benefits and Features
●● 20-Bit Resolution with No Missing Codes
●● 1Msps Throughput with No Pipeline Delay
●● 18mW at 1Msps, Ultra-Low Power Consumption
●● ±1.5LSB INL, Over Temperature
●● ±1 LSB DNL Maximum at 20 Bits
●● 99dB SNR at fIN = 10kHz
●● 99dB SINAD at fIN = 10kHz
●● -123dB THD at fIN = 10kHz
●● ±VREF Unipolar Differential Analog Input Range
●● VREF = 2.5V to 3.6V
●● Integrated Reference Buffers
●● 1.8V Analog and Digital Core Supply
●● 3.3V REFVDD Reference Buffer Supply
●● 1.5V to 3.6V Digital Interface Supply
●● Serial Interface SPI/QSPIK/MICROWIREM/DSP-
Compatible
●● -40°C to +85°C Operation*
●● 32-Pin, 5mm x 5mm, TQFN Package
*Contact Maxim Integrated for extended temperature
range.
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corporation.
Ordering Information and Selector Guide appear at end of
data sheet.
19-8528; Rev 0; 4/16
1 page  
MAX11960
Dual Simultaneous Sampling, 20-Bit, 1Msps,
Differential SAR ADC
Electrical Characteristics (continued)
(fSAMPLE = 1Msps, VAVDD = 1.8V, VDVDD = 1.8V, VOVDD = 1.5V to 3.6V, VREFVDD = 3.6V, VREF = 3.3V, Internal Ref Buffers On,
TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
TIMING
DIN_ to SCLK Rising-Edge
Setup
t1
4 ns
DIN_ to SCLK Rising-Edge
Hold
t2
1 ns
DOUT_ End-Of-Conversion
Low Time
t3
15 ns
DOUT_ to SCLK Rising-Edge
Hold
t4
2.5 ns
DOUT_ to SCLK Rising-Edge
Setup
t5 100MHz SCLK
1.5 ns
SCLK High
SCLK Period
SCLK Low
CNVST_ Rising-Edge To SCLK
Rising Edge
t6
t7
t8
t9
4.5 ns
10 ns
4.5 ns
0 ns
SCLK Rising-Edge to CNVST_
Rising Edge
t10
25 ns
CNVST_ High
t11
25 ns
CNVST_ High to EOC
t12
850 ns
Conversion Period
t13
1000
ns
Note 2: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design
and device characterization.
Note 3: See the Analog Inputs section.
Note 4: See the Definitions section at the end of the data sheet.
Note 5: See the Definitions section at the end of the data sheet. Error contribution from the external reference not included.
Note 6: Parameter is guaranteed by design.
Note 7: Defined as the change in positive full-scale code transition caused by a ±5% variation in the supply voltage.
Note 8: Sine wave input, fIN = 10kHz, AIN = 0.5dB below full scale.
Note 9: CLOAD = 10pF on DOUT. fCONV = 1Msps. All data is read out.
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX11960
Dual Simultaneous Sampling, 20-Bit, 1Msps,
Differential SAR ADC
Typical Operating Characteristics (continued)
(VAVDD = 1.8V, VDVDD = 1.8V, VOVDD = 1.8V, VREFVDD = 3.6V, fSAMPLE = 1Msps, VREF = 3.3V, Internal Ref Buffer On, TA = TMIN to
TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
THD AND SFDR vs. REFERENCE VOLTAGE
130
(CHANNEL A)
TOC16A
SFDR
128
-THD
125
123
120
118
115
113
110
2.0 2.2 2.3 2.5 2.6 2.8 2.9 3.1 3.2
VREF (V)
THD AND SFDR vs. REFERENCE VOLTAGE
130
(CHANNEL B)
TOC16B
SFDR
128 -THD
125
123
120
118
115
113
110
2.0 2.2 2.3 2.5 2.6 2.8 2.9 3.1 3.2
VREF (V)
CURRENT vs. TEMPERATURE
4.00
(CHANNEL A)
TOC17A
3.50
3.00
IOVDD
2.50
IREFVDD (BUFFER OFF)
IREFVDD
IDVDD
2.00 IAVDD
1.50
1.00
0.50
0.00
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
SHUTDOWN CURRENT vs. TEMPERATURE
12
(CHANNEL A)
TOC18A
IAVDD
IOVDD
10 IREFVDD
IDVDD
8
6
4
2
0
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
CURRENT vs. TEMPERATURE
(CHANNEL B)
TOC17B
4.00
3.50
3.00 IOVDD
IREFVDD (BUFFER OFF)
2.50 IREFVDD
IDVDD
2.00 IAVDD
1.50
1.00
0.50
0.00
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
SHUTDOWN CURRENT vs. TEMPERATURE
10
(CHANNEL B)
TOC18B
IAVDD
IOVDD
8
IREFVDD
IDVDD
6
4
2
0
-40 -25 -10 5 20 35 50 65 80
TEMPERATURE (°C)
www.maximintegrated.com
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX11960.PDF ] | |
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