MAX11666AUB+ Maxim Integrated, MAX11666AUB+ Datasheet

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MAX11666AUB+

Manufacturer Part Number
MAX11666AUB+
Description
Analog to Digital Converters - ADC 1/2Ch 12-Bit 500ksps Low Power SPI
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX11666AUB+

Rohs
yes
Number Of Channels
2
Architecture
SAR
Conversion Rate
500 KSPs
Resolution
12 bit
Input Type
Single-Ended
Interface Type
SPI
Operating Supply Voltage
2.2 V to 3.6 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Package / Case
uMAX-10
Maximum Power Dissipation
707.3 mW
Minimum Operating Temperature
- 40 C
Number Of Converters
1
Voltage Reference
2.2 V to 3.6 V
19-5530; Rev 5; 4/12
The MAX11661−MAX11666 are 12-/10-/8-bit, compact,
low-power, successive approximation analog-to-digital
converters (ADCs). These high-performance ADCs include
a high-dynamic range sample-and-hold and a high-speed
serial interface. These ADCs accept a full-scale input from
0V to the power supply or to the reference voltage.
The MAX11662/MAX11664/MAX11666 feature dual, sin-
gle-ended analog inputs connected to the ADC core
using a 2:1 MUX. The devices also include a separate
supply input for data interface and a dedicated input
for reference voltage. In contrast, the single-channel
devices generate the reference voltage internally from
the power supply.
These
consume only
down mode and fast wake-up for optimal power man-
agement and a high-speed 3-wire serial interface. The
3-wire serial interface directly connects to SPI, QSPIK,
and MICROWIRE
Excellent dynamic performance, low voltage, low power,
ease of use, and small package size make these con-
verters ideal for portable battery-powered data-acquisi-
tion applications, and for other applications that demand
low-power consumption and minimal space.
These ADCs are available in a 10-pin FMAX
and a 6-pin SOT23 package. These devices operate
over the -40NC to +125NC temperature range.
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National Semiconductor Corp.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
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.
Note: All devices are specified over the -40°C to +125°C operating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
/V denotes an automotive qualified part.
MAX11661AUT+
MAX11662AUB+
MAX11663AUT+
MAX11664AUB+
MAX11665AUT+
MAX11666AUB+
MAX11666AUB/V+
ADCs
PART
operate from a 2.2V to 3.6V supply and
3.3mW. The devices include full power-
®
_______________________________________________________________ Maxim Integrated Products 1
devices without external logic.
General Description
PIN-PACKAGE
10 FMAX-EP*
10 FMAX-EP*
10 FMAX-EP*
10 FMAX-EP*
6 SOT23
6 SOT23
6 SOT23
®
package,
Serial 12-/10-/8-Bit ADCs
S 500ksps Conversion Rate, No Pipeline Delay
S 12-/10-/8-Bit Resolution
S 1-/2-Channel, Single-Ended Analog Inputs
S Low-Noise 73dB SNR
S Variable I/O: 1.5V to 3.6V (Dual-Channel Only)
S 2.2V to 3.6V Supply Voltage
S Low Power
S External Reference Input (Dual-Channel Devices Only)
S 1.3µA Power-Down Current
S
S 10-Pin, 3mm x 5mm µMAX Package
S 6-Pin, 2.8mm x 2.9mm SOT23 Package
S Wide -40NC to +125NC Operation
SPI-/QSPI-/MICROWIRE-Compatible Serial
Interface
500ksps, Low-Power,
Allows the Serial Interface to Connect Directly
to 1.5V, 1.8V, 2.5V, or 3V Digital Systems
3.3mW
Very Low Power Consumption at 8µA/ksps
Data Acquisition
Portable Data Logging
Medical Instrumentation
Battery-Operated Systems
Communication Systems
Automotive Systems
BITS
10
10
12
12
12
8
8
Ordering Information
NO. OF CHANNELS
Applications
1
2
1
2
1
2
2
Features

Related parts for MAX11666AUB+

MAX11666AUB+ Summary of contents

Page 1

... PART MAX11661AUT+ MAX11662AUB+ MAX11663AUT+ MAX11664AUB+ MAX11665AUT+ MAX11666AUB+ MAX11666AUB/V+ Note: All devices are specified over the -40°C to +125°C operating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. /V denotes an automotive qualified part. QSPI is a trademark of Motorola, Inc. ...

Page 2

Low-Power, Serial 12-/10-/8-Bit ADCs ABSOLUTE MAXIMUM RATINGS V to GND .............................................................-0.3V to +4V DD REF, OVDD, AIN1, AIN2, AIN to GND ........-0.3V to the lower of CS, SCLK, CHSEL, DOUT TO GND ............-0.3V to the lower of (V AGND ...

Page 3

ELECTRICAL CHARACTERISTICS (MAX11666) (continued 2.2V to 3.6V REF DD OVDD unless otherwise noted. Typical values are at T PARAMETER SYMBOL CONVERSION RATE Throughput Conversion Time Acquisition Time Aperture Delay Aperture Jitter Serial-Clock ...

Page 4

Low-Power, Serial 12-/10-/8-Bit ADCs ELECTRICAL CHARACTERISTICS (MAX11666) (continued 2.2V to 3.6V REF DD OVDD unless otherwise noted. Typical values are at T PARAMETER SYMBOL POWER SUPPLY Positive Supply Voltage Digital I/O ...

Page 5

ELECTRICAL CHARACTERISTICS (MAX11665) (continued 2.2V to 3.6V 8MHz, 50% duty cycle, 500ksps SCLK values are +25NC.) (Note 1) A PARAMETER SYMBOL Total Harmonic Distortion Spurious-Free Dynamic Range Intermodulation Distortion Full-Power Bandwidth ...

Page 6

Low-Power, Serial 12-/10-/8-Bit ADCs ELECTRICAL CHARACTERISTICS (MAX11665) (continued 2.2V to 3.6V 8MHz, 50% duty cycle, 500ksps SCLK values are +25NC.) (Note 1) A PARAMETER SYMBOL Positive Supply Current (Full- Power ...

Page 7

ELECTRICAL CHARACTERISTICS (MAX11664) (continued 2.2V to 3.6V REF DD OVDD unless otherwise noted. Typical values are at T PARAMETER SYMBOL Intermodulation Distortion Full-Power Bandwidth Full-Linear Bandwidth Small-Signal Bandwidth Crosstalk CONVERSION RATE Throughput ...

Page 8

Low-Power, Serial 12-/10-/8-Bit ADCs ELECTRICAL CHARACTERISTICS (MAX11664) (continued 2.2V to 3.6V REF DD OVDD unless otherwise noted. Typical values are at T PARAMETER SYMBOL POWER SUPPLY Positive Supply Voltage Digital I/O ...

Page 9

ELECTRICAL CHARACTERISTICS (MAX11663) (continued 2.2V to 3.6V 8MHz, 50% duty cycle, 500ksps SCLK values are +25NC.) (Note 1) A PARAMETER SYMBOL DYNAMIC PERFORMANCE (f = 250kHz) AIN Signal-to-Noise and Distortion SINAD ...

Page 10

Low-Power, Serial 12-/10-/8-Bit ADCs ELECTRICAL CHARACTERISTICS (MAX11663) (continued 2.2V to 3.6V 8MHz, 50% duty cycle, 500ksps SCLK values are +25NC.) (Note 1) A PARAMETER SYMBOL DIGITAL OUTPUT (DOUT) Output High ...

Page 11

ELECTRICAL CHARACTERISTICS (MAX11662 2.2V to 3.6V REF DD OVDD unless otherwise noted. Typical values are at T PARAMETER SYMBOL DC ACCURACY Resolution Integral Nonlinearity Differential Nonlinearity Offset Error Gain Error Total Unadjusted ...

Page 12

Low-Power, Serial 12-/10-/8-Bit ADCs ELECTRICAL CHARACTERISTICS (MAX11662) (continued 2.2V to 3.6V REF DD OVDD unless otherwise noted. Typical values are at T PARAMETER SYMBOL DIGITAL INPUTS (SCLK, CS) Digital Input High ...

Page 13

ELECTRICAL CHARACTERISTICS (MAX11661 2.2V to 3.6V 8MHz, 50% duty cycle, 500ksps SCLK values are +25NC.) (Note 1) A PARAMETER SYMBOL DC ACCURACY Resolution Integral Nonlinearity Differential Nonlinearity Offset Error Gain Error ...

Page 14

Low-Power, Serial 12-/10-/8-Bit ADCs ELECTRICAL CHARACTERISTICS (MAX11661) (continued 2.2V to 3.6V 8MHz, 50% duty cycle, 500ksps SCLK values are +25NC.) (Note 1) A PARAMETER SYMBOL DIGITAL OUTPUT (DOUT) Output High ...

Page 15

SCLK D11 D10 HIGH DOUT (MSB) IMPEDANCE t 3 Figure 1. Interface Signals for Maximum Throughput, 12-Bit Devices t 4 SCLK DOUT OLD DATA Figure 2. Setup Time After SCLK Falling Edge ...

Page 16

Low-Power, Serial 12-/10-/8-Bit ADCs (MAX11665AUT +25°C, unless otherwise noted.) A SOT23 TYPICAL OPERATING CHARACTERISTICS INTEGRAL NONLINEARITY (INL) vs. OUTPUT CODE 1.0 0.5 0 -0.5 -1.0 0 1000 2000 3000 4000 DIGITAL OUTPUT CODE (DECIMAL) GAIN ERROR vs. ...

Page 17

T = +25°C, unless otherwise noted.) A SOT23 TYPICAL OPERATING CHARACTERISTICS SIGNAL-TO-NOISE AND DISTORTION RATIO (SINAD) vs. ANALOG INPUT FREQUENCY 100 150 f (kHz) IN SUPPLY CURRENT vs. TEMPERATURE 1 3.6V ...

Page 18

Low-Power, Serial 12-/10-/8-Bit ADCs TOP VIEW + AIN1 1 AIN2 2 MAX11662 AGND 3 MAX11664 MAX11666 REF µMAX *CONNECT EP TO GROUND PLANE. DEVICES DO NOT OPERATE WHEN EP IS NOT CONNECTED TO GROUND! PIN ...

Page 19

V OVDD DD MAX11662 CS CONTROL MAX11664 SCLK LOGIC MAX11666 OUTPUT SAR BUFFER CHSEL AIN1 MUX CDAC AIN2 REF AGND GND (EP +3V AIN1 ANALOG INPUTS AIN2 AGND REF +2.5V GND (EP +3V GND ANALOG AIN ...

Page 20

Low-Power, Serial 12-/10-/8-Bit ADCs Detailed Description The MAX11661–MAX11666 are fast, 12-/10-/8-bit, low- power, single-supply ADCs. The devices operate from a 2.2V to 3.6V supply and consume only 2.98mW (V = 2.2V) or 4.37mW (V = 3V). These devices DD ...

Page 21

To sustain the maximum sample rate, all devices have to be resampled immediately after the 16th clock cycle. For lower sample rates, the CS falling edge can be delayed leaving DOUT in a high-impedance condition. Pull CS high after the ...

Page 22

Low-Power, Serial 12-/10-/8-Bit ADCs PULL CS HIGH AFTER THE 2ND AND BEFORE THE 10TH SCLK FALLING EDGE CS SCLK DOUT HIGH IMPEDANCE INVALID DATA Figure 8. Entering Power-Down Mode CS SCLK ...

Page 23

Supply Current vs. Sampling Rate For applications requiring lower throughput rates, the user can reduce the clock frequency (f the sample rate. Figure 11 shows the typical supply current ( function of sample rate (f VDD 500ksps ...

Page 24

Low-Power, Serial 12-/10-/8-Bit ADCs Dual-Channel Operation The MAX11662/MAX11664/MAX11666 feature dual-input channels. These devices use a channel-select (CHSEL) input to select between analog input AIN1 (CHSEL = 0) or AIN2 (CHSEL = 1). As shown in Figure 13, the CHSEL ...

Page 25

The input sampling capacitor charges during the sampling cycle, referred to as the acquisition period. During this acquisition period, the settling time is affected by ...

Page 26

Low-Power, Serial 12-/10-/8-Bit ADCs Integral Nonlinearity Integral nonlinearity (INL) is the deviation of the values on an actual transfer function from a straight line. For these devices, the straight line is a line drawn between the end points of ...

Page 27

Chip Information PROCESS: CMOS ______________________________________________________________________________________ 500ksps, Low-Power, Serial 12-/10-/8-Bit ADCs Package Information For the latest package outline information and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. ...

Page 28

... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 28 2012 Maxim Integrated Products © ...

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