National Semiconductor ADC121S101, ADC101S101, ADC081S101 Technical data

查询ADC081S101CIMF供应商

ADC121S101/ADC101S101/ADC081S101 1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23 & LLP

January 2005

General Description

The ADC121S101, ADC101S101, and ADC081S101 are low power, monolithic CMOS 12-, 10- and 8-bit analog-to-digital converters that operate at 1 MSPS. Each device is based on a successive approximation register architecture with internal track-and-hold. The serial interface is compatible with several standards, such as SPI and many common DSP serial interfaces.

The ADC121S101/101S101/081S101 uses the supply voltage as a reference. This enables the devices to operate with a full-scale input range of 0 to V determined from the serial clock (SCLK) speed. These converters offer a shutdown mode, which can be used to trade throughput for power consumption. The ADC121S101/ 101S101/081S101 are operated with a single supply that can range from +2.7V to +5.25V. Normal power consumption during continuous conversion, using a +3V or +5V supply, is 2 mW or 10 mW, respectively. The power down feature, which is enabled by a chip select (CS) pin, reduces the power consumption to under 5 µW using a +5V supply. All three converters are available in a 6-lead SOT-23 package, which provides an extremely small footprint for applications where space is a critical consideration. The ADC081S101 is also available in a 6-lead LLP package. These products are designed for operation over the industrial temperature range of −40˚C to +85˚C, with some parameters specified to +125˚C for the ADC121S101.

™

, QSPI™, MICROWIRE™,

. The conversion rate is

DD

Features

n Variable power management n Packaged in 6-lead SOT-23 (ADC081S101 also

available in a 6-Lead LLP package)

n Power supply used as reference n Single +2.7V to +5.25V supply operation

™

n SPI

/QSPI™/MICROWIRE™/DSP compatible

Key Specifications

n Resolution with no Missing Codes 12/10/8 bits n Conversion Rate 1 MSPS n DNL (ADC121S101) +0.5, -0.3 LSB (typ) n INL (ADC121S101) n Power Consumption

— 3V Supply 2 mW (typ) — 5V Supply 10 mW (typ)

±

0.4 LSB (typ)

Applications

n Automotive Navigation n FA/ATM Equipment n Portable Systems n Medical Instruments n Mobile Communications n Instrumentation and Control Systems

Connection Diagram

MICROWIRE™is a trademark of National Semiconductor Corporation.

®

TRI-STATE QSPI

is a trademark of National Semiconductor Corporation.

™

and SPI™are trademarks of Motorola, Inc.

20110201

Ordering Information

Order Code Temperature

Range

ADC121S101CIMF −40˚C to

+125˚C

ADC101S101CIMF −40˚C to +85˚C 6-Lead SOT-23 Package X02C

ADC081S101CIMF −40˚C to +85˚C 6-Lead SOT-23 Package X03C

ADC121S101CIMFX −40˚C to

+125˚C

ADC101S101CIMFX −40˚C to +85˚C 6-Lead SOT-23 Package, Tape & Reel X02C

ADC081S101CIMFX −40˚C to +85˚C 6-Lead SOT-23 Package, Tape & Reel X03C

ADC081S101CISDX −40˚C to +85˚C 6-Lead LLP Package, Tape & Reel X3C

ADC081S101CISD −40˚C to +85˚C 6-Lead LLP Package, Tape & Partial Reel X3C

ADC121S101/ADC101S101/ADC081S101

ADC121S101EVAL SOT-23 Evaluation Board

ADC101S101EVAL SOT-23 Evaluation Board

ADC081S101EVAL SOT-23 Evaluation Board

6-Lead SOT-23 Package, Tape & Reel X01C

Description Top Mark

6-Lead SOT-23 Package X01C

Pin Descriptions

Pin No. Symbol Description

ANALOG I/O

3V

DIGITAL I/O

4 SCLK

5 SDATA Digital data output. The output words are clocked out of this pin by the SCLK pin.

6CS

POWER SUPPLY

1V

2 GND The ground return for the supply.

IN

DD

Analog input. This signal can range from 0V to VDD.

Digital clock input. The range of frequencies for this input is 10 kHz to 20 MHz, with guaranteed performance at 20 MHz. This clock directly controls the conversion and readout processes.

Chip select. A conversion process begins on the falling edge of CS.

Positive supply pin. These pins should be connected to a quiet +2.7V to +5.25V source and bypassed to GND with 0.1 µF and 1 µF monolithic capacitors located within 1 cm of the power pin. The ADC121S101/101S101/081S101 uses this power supply as a reference, so it should be thoroughly bypassed.

Block Diagram

www.national.com 2

20110218

ADC121S101/ADC101S101/ADC081S101

Absolute Maximum Ratings

(Notes 1, 2)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

Supply Voltage V

DD

Voltage on Any Analog Pin to GND −0.3V to V

−0.3V to +6.5V

+0.3V

DD

Operating Ratings (Note 2)

Operating Temperature Range

ADC121S101 ADC101S101 & ADC081S101

V

Supply Voltage +2.7V to +5.25V

DD

−40˚C ≤ T

Digital Input Pins Voltage Range (Note 6) +2.7V to +5.25V

≤ +125˚C

A

≤ +85˚C

A

Voltage on Any Digital Pin to GND -0.3V to 6.5V

Input Current at Any Pin (Note 5)

ESD Susceptibility

Human Body Model

Machine Model

Soldering Temperature, Infrared,

±

10 mA

3500V

200V

Package Thermal Resistance

Package θ

6-Lead SOT-23 265˚C / W

6-Lead LLP 94˚C / W

JA

10 seconds 215˚C

Junction Temperature +150˚C

Storage Temperature −65˚C to +150˚C

Soldering process must comply with National Semiconductor’s Reflow Temperature Profile specifications. Refer to www.national.com/packaging.

(Note 4)

ADC121S101 Converter Electrical Characteristics

The following specifications apply for VDD= +2.7V to 5.25V, f

face limits apply for T

= −40˚C to +85˚C: all other limits TA= 25˚C, unless otherwise noted.

A

Symbol Parameter Conditions Typical Limits Units

STATIC CONVERTER CHARACTERISTICS (V

= 2.7V to 3.6V)

DD

Resolution with No Missing Codes −40˚C ≤ T

−40˚C ≤ T

INL Integral Non-Linearity

DNL Differential Non-Linearity

V

OFF

Offset Error −40˚C ≤ TA≤ 125˚C

T

= 125˚C

A

−40˚C ≤ TA≤ 85˚C

T

= 125˚C

A

GE Gain Error −40˚C ≤ T

DYNAMIC CONVERTER CHARACTERISTICS (f

= 100 kHz, -0.02 dBFS sine wave unless otherwise noted)

IN

SINAD Signal-to-Noise Plus Distortion Ratio −40˚C ≤ T

SNR Signal-to-Noise Ratio

−40˚C ≤ T

T

= 125˚C 70.6 dB (min)

A

THD Total Harmonic Distortion -80 dB

SFDR Spurious-Free Dynamic Range 82 dB

Intermodulation Distortion, Second

IMD

Order Terms

Intermodulation Distortion, Third Order Terms

FPBW -3 dB Full Power Bandwidth

f

= 103.5 kHz, fb= 113.5 kHz -78 dB

a

= 103.5 kHz, fb= 113.5 kHz -78 dB

f

a

+5V Supply 11 MHz

+3V Supply 8 MHz

POWER SUPPLY CHARACTERISTICS

V

DD

Supply Voltage −40˚C ≤ TA≤ 125˚C

= 20 MHz, f

SCLK

≤ 125˚C 12 Bits

A

≤ 85˚C

A

≤ 125˚C

A

≤ 125˚C 72 70 dB (min)

A

≤ 85˚C 72.5 70.8 dB (min)

A

= 1 MSPS unless otherwise noted. Bold-

SAMPLE

±

0.4

±

1 LSB (max)

+1

-1.1

+0.5

-0.3

±

0.1

±

0.2

+1

-0.9

±

1 LSB (max)

±

1.2 LSB (max)

±

1.2 LSB (max)

LSB (min)

LSB (max)

LSB (min)

2.7 V (min)

5.25 V (max)

www.national.com3

ADC121S101 Converter Electrical Characteristics (Continued)

The following specifications apply for VDD= +2.7V to 5.25V, f

face limits apply for T

= −40˚C to +85˚C: all other limits TA= 25˚C, unless otherwise noted.

A

Symbol Parameter Conditions Typical Limits Units

POWER SUPPLY CHARACTERISTICS

V

= +4.75V to +5.25V,

DD

Normal Mode (Static)

SCLK On or Off

= +2.7V to +3.6V,

V

DD

SCLK On or Off

I

DD

Normal Mode (Operational)

ADC121S101/ADC101S101/ADC081S101

Shutdown Mode

Power Consumption, Normal Mode

P

D

(Operational)

Power Consumption, Shutdown Mode

VDD= +4.75V to +5.25V, f

V f

V

= 1 MSPS

SAMPLE

= +2.7V to +3.6V,

DD

= 1 MSPS

SAMPLE

= +5V, SCLK Off 0.5 µA

DD

= +5V, SCLK On 60 µA

DD

= +5V, f

DD

= +3V, f

DD

= +5V, SCLK Off 2.5 µW

DD

= +3V, SCLK Off 1.5 µW

DD

ANALOG INPUT CHARACTERISTICS

V

I

C

IN

DCL

INA

Input Range 0 to V

DC Leakage Current

Input Capacitance (Note 3) 30 pF

DIGITAL INPUT CHARACTERISTICS

V

IH

V

IL

I

IN

C

IND

Input High Voltage 2.4 V (min)

= +5V 0.8 V (max)

V

Input Low Voltage

DD

V

= +3V 0.4 V (max)

DD

Input Current VIN=0VorV

Input Capacitance (Note 3) 2 4 pF (max)

DIGITAL OUTPUT CHARACTERISTICS

I

V

OH

V

OL

I

OL

C

OUT

Output High Voltage

Output Low Voltage I

TRI-STATE Leakage Current

TRI-STATE Output Capacitance 2 4 pF (max)

SOURCE

V

SINK

= 200 µA,

= +2.7V to +5.25V

DD

= 200 µA 0.4 V (max)

Output Coding Straight (Natural) Binary

AC ELECTRICAL CHARACTERISTICS

f

SCLK

Clock Frequency 20 MHz (max)

DC SCLK Duty Cycle

t

TH

f

RATE

t

AD

t

AJ

Track/Hold Acquisition Time 400 ns (max)

Throughput Rate See Serial Interface Section 1

Aperture Delay 3 ns

Aperture Jitter 30 ps

SCLK

SAMPLE

DD

= 20 MHz, f

= 1 MSPS unless otherwise noted. Bold-

SAMPLE

2mA

1mA

2.0 3.2 mA (max)

0.6 1.5 mA (max)

= 1 MSPS 10 16 mW (max)

= 1 MSPS 2 4.5 mW (max)

DD

±

1 µA (max)

±

10 nA

±

1 µA (max)

V

−0.2 V (min)

DD

±

10 µA (max)

40 60

V

% (min)

% (max)

MSPS

(max)

www.national.com 4

ADC101S101 Converter Electrical Characteristics

The following specifications apply for VDD= +2.7V to 5.25V, f

face limits apply for T

= −40˚C to +85˚C: all other limits TA= 25˚C, unless otherwise noted.

A

Symbol Parameter Conditions Typical Limits Units

STATIC CONVERTER CHARACTERISTICS

Resolution with No Missing Codes 10 Bits

INL Integral Non-Linearity

DNL Differential Non-Linearity

V

OFF

Offset Error

GE Gain Error

DYNAMIC CONVERTER CHARACTERISTICS

SINAD Signal-to-Noise Plus Distortion Ratio f

SNR Signal-to-Noise Ratio f

THD Total Harmonic Distortion f

SFDR Spurious-Free Dynamic Range f

Intermodulation Distortion, Second

IMD

Order Terms

Intermodulation Distortion, Third Order Terms

FPBW -3 dB Full Power Bandwidth

= 100 kHz 61.7 61 dBFS (min)

IN

= 100 kHz 62 dB

IN

= 100 kHz -77 -73 dB (max)

IN

= 100 kHz 78 74 dB (min)

IN

f

= 103.5 kHz, fb= 113.5 kHz -78 dB

a

fa= 103.5 kHz, fb= 113.5 kHz -78 dB

+5V Supply 11 MHz

+3V Supply 8 MHz

POWER SUPPLY CHARACTERISTICS

V

DD

Supply Voltage

Normal Mode (Static)

V

= +4.75V to +5.25V,

DD

SCLK On or Off

= +2.7V to +3.6V,

V

DD

SCLK On or Off

I

DD

Normal Mode (Operational)

Shutdown Mode

Power Consumption, Normal Mode

P

D

(Operational)

Power Consumption, Shutdown Mode

VDD= +4.75V to +5.25V, f

V f

V

= 1 MSPS

SAMPLE

= +2.7V to +3.6V,

DD

= 1 MSPS

SAMPLE

= +5V, SCLK Off 0.5 µA (max)

DD

= +5V, SCLK On 60 µA (max)

DD

= +5V, f

DD

= +3V, f

DD

= +5V, SCLK Off 2.5 µW (max)

DD

= +3V, SCLK Off 1.5 µW (max)

DD

ANALOG INPUT CHARACTERISTICS

V

I

C

IN

DCL

INA

Input Range 0 to V

DC Leakage Current

Input Capacitance (Note 3) 30 pF

DIGITAL INPUT CHARACTERISTICS

V

IH

V

IL

I

IN

C

IND

Input High Voltage 2.4 V (min)

= +5V 0.8 V (max)

V

Input Low Voltage

DD

V

= +3V 0.4 V (max)

DD

Input Current VIN=0VorV

Input Capacitance (Note 3) 2 4 pF (max)

DIGITAL OUTPUT CHARACTERISTICS

I

V

OH

Output High Voltage

SOURCE

V

= 200 µA,

= +2.7V to +5.25V

DD

SCLK

SAMPLE

DD

= 20 MHz, f

= 1 MSPS unless otherwise noted. Bold-

SAMPLE

±

0.2

+0.3

-0.2

±

0.1

±

0.2

±

0.7 LSB (max)

±

0.7

±

0.7 LSB (max)

±

1 LSB (max)

2.7

5.25

LSB (max) LSB (max)

V (min)

V (max)

2mA

1mA

2.0 3.2 mA (max)

0.6 1.5 mA (max)

= 1 MSPS 10 16 mW (max)

= 1 MSPS 2 4.5 mW (max)

DD

±

1 µA (max)

±

10 nA

±

1 µA (max)

V

−0.2 V (min)

DD

ADC121S101/ADC101S101/ADC081S101

V

www.national.com5

ADC101S101 Converter Electrical Characteristics (Continued)

The following specifications apply for VDD= +2.7V to 5.25V, f

face limits apply for T

= −40˚C to +85˚C: all other limits TA= 25˚C, unless otherwise noted.

A

Symbol Parameter Conditions Typical Limits Units

DIGITAL OUTPUT CHARACTERISTICS

V

OL

I

OL

C

OUT

Output Low Voltage I

TRI-STATE Leakage Current

TRI-STATE Output Capacitance (Note 3)

= 200 µA 0.4 V (max)

SINK

Output Coding Straight (Natural) Binary

AC ELECTRICAL CHARACTERISTICS

f

SCLK

Clock Frequency 20 MHz (max)

DC SCLK Duty Cycle

ADC121S101/ADC101S101/ADC081S101

t

TH

f

RATE

t

AD

t

AJ

Track/Hold Acquisition Time 400 ns (max)

Throughput Rate See Serial Interface Section 1

Aperture Delay 3 ns

Aperture Jitter 30 ps

SCLK

= 20 MHz, f

= 1 MSPS unless otherwise noted. Bold-

SAMPLE

±

10 µA (max)

2 4 pF (max)

40 60

% (min)

% (max)

MSPS

(max)

www.national.com 6

ADC081S101 Converter Electrical Characteristics

The following specifications apply for VDD= +2.7V to 5.25V, f

face limits apply for T

= −40˚C to +85˚C: all other limits TA= 25˚C, unless otherwise noted.

A

Symbol Parameter Conditions Typical Limits Units

STATIC CONVERTER CHARACTERISTICS

Resolution with No Missing Codes 8 Bits

INL Integral Non-Linearity

DNL Differential Non-Linearity

V

OFF

Offset Error

GE Gain Error

Total Unadjusted Error

DYNAMIC CONVERTER CHARACTERISTICS

SINAD Signal-to-Noise Plus Distortion Ratio f

SNR Signal-to-Noise Ratio f

THD Total Harmonic Distortion f

SFDR Spurious-Free Dynamic Range f

Intermodulation Distortion, Second

IMD

Order Terms

Intermodulation Distortion, Third Order Terms

FPBW -3 dB Full Power Bandwidth

= 100 kHz 49.7 49 dB (min)

IN

= 100 kHz 49.7 dB

IN

= 100 kHz -77 -65 dB (max)

IN

= 100 kHz 69 65 dB (min)

IN

f

= 103.5 kHz, fb= 113.5 kHz -68 dB

a

fa= 103.5 kHz, fb= 113.5 kHz -68 dB

+5V Supply 11 MHz

+3V Supply 8 MHz

POWER SUPPLY CHARACTERISTICS

V

DD

Supply Voltage

Normal Mode (Static)

V

= +4.75V to +5.25V,

DD

SCLK On or Off

VDD= +2.7V to +3.6V, SCLK On or Off

= +4.75V to +5.25V,

V

I

DD

Normal Mode (Operational)

Shutdown Mode

Power Consumption, Normal Mode

P

D

(Operational)

Power Consumption, Shutdown Mode

DD

f

V f

V

= 1 MSPS

SAMPLE

= +2.7V to +3.6V,

DD

= 1 MSPS

SAMPLE

= +5V, SCLK Off 0.5 µA (max)

DD

= +5V, SCLK On 60 µA (max)

DD

= +5V, f

DD

MSPS

V

= +3V, f

DD

V

= +5V, SCLK Off 2.5 µW (max)

DD

V

= +3V, SCLK Off 1.5 µW (max)

DD

ANALOG INPUT CHARACTERISTICS

V

I

C

IN

DCL

INA

Input Range 0toV

DC Leakage Current

Input Capacitance 30 pF

DIGITAL INPUT CHARACTERISTICS

V

IH

V

IL

I

IN

C

IND

Input High Voltage 2.4 V (min)

= +5V 0.8 V (max)

V

Input Low Voltage

DD

V

= +3V 0.4 V (max)

DD

Digital Input Current VIN=0VorV

Input Capacitance(Note 3) 2 4 pF (max)

SCLK

= 20 MHz, f

= 1 MSPS unless otherwise noted. Bold-

SAMPLE

± ± ± ± ±

0.05

0.07

0.03

0.08

0.07

±

0.3 LSB (max)

±

0.3 LSB (max)

±

0.3 LSB (max)

±

0.4 LSB (max)

±

0.3 LSB (max)

2.7

5.25

2mA

1mA

SOT-23

LLP 2.6

SOT-23

LLP 1.1

SAMPLE

=1

SOT-23

LLP 13

= 1 MSPS 2 4.5 mW (max)

SAMPLE

DD

2.0

0.6

±

10 nA

10

DD

3.2

1.5

16

±

1 µA (max)

±

1 µA (max)

V (min)

V (max)

mA (max)

mW (max)

ADC121S101/ADC101S101/ADC081S101

V

www.national.com7