ADCS7477AIMF/NOPB National Semiconductor, ADCS7477AIMF/NOPB Datasheet

IC ADC 10BIT 1MSPS SOT-23-6

ADCS7477AIMF/NOPB

Manufacturer Part Number
ADCS7477AIMF/NOPB
Description
IC ADC 10BIT 1MSPS SOT-23-6
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet

Specifications of ADCS7477AIMF/NOPB

Number Of Bits
10
Sampling Rate (per Second)
1M
Data Interface
MICROWIRE™, QSPI™, Serial, SPI™
Number Of Converters
1
Power Dissipation (max)
17.5mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ADCS7477AIMF
ADCS7477AIMFTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADCS7477AIMF/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
© 2010 National Semiconductor Corporation
1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23 & LLP
General Description
The ADCS7476, ADCS7477, and ADCS7478 are low power,
monolithic CMOS 12-, 10- and 8-bit analog-to-digital convert-
ers that operate at 1 MSPS. The ADCS7476/77/78 are drop-
in replacements for Analog Devices' AD7476/77/78. Each
device is based on a successive approximation register ar-
chitecture with internal track-and-hold. The serial interface is
compatible with several standards, such as SPI™, QSPI™,
MICROWIRE™, and many common DSP serial interfaces.
The ADCS7476/77/78 uses the supply voltage as a refer-
ence, enabling the devices to operate with a full-scale input
range of 0 to V
serial clock (SCLK) speed. These converters offer a shut-
down mode, which can be used to trade throughput for power
consumption. The ADCS7476/77/78 is 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
and in a 6-lead LLP, both of which provide an extremely small
footprint for applications where space is a critical considera-
tion. These products are designed for operation over the
automotive/extended industrial temperature range of −40°C
to +125°C.
Connection Diagram
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
DD
. The conversion rate is determined from the
200577
ADCS7476
ADCS7477
ADCS7478
Features
Key Specifications
Applications
Variable power management
Packaged in 6-lead, SOT-23 and LLP
Power supply used as reference
Single +2.7V to +5.25V supply operation
SPI™/QSPI™/MICROWIRE™/DSP compatible
Resolution with no Missing Codes
Conversion Rate
DNL
INL
Power Consumption
— 3V Supply
— 5V Supply
Automotive Navigation
FA/ATM Equipment
Portable Systems
Medical Instruments
Mobile Communications
Instrumentation and Control Systems
20057701
+0.5, -0.3 LSB (typ)
February 17, 2010
± 0.4 LSB (typ)
www.national.com
10 mW (typ)
12/10/8 bits
2 mW (typ)
1 MSPS

Related parts for ADCS7477AIMF/NOPB

ADCS7477AIMF/NOPB Summary of contents

Page 1

... These products are designed for operation over the automotive/extended industrial temperature range of −40°C to +125°C. Connection Diagram TRI-STATE ® registered trademark of National Semiconductor Corporation. © 2010 National Semiconductor Corporation ADCS7476 ADCS7477 ADCS7478 Features ■ ...

Page 2

Ordering Information Order Code Temperature Range ADCS7476AIMF −40°C to +125°C ADCS7477AIMF −40°C to +85°C ADCS7478AIMF −40°C to +85°C ADCS7476AIMFX −40°C to +125°C ADCS7476AISDX −40°C to +125°C ADCS7477AIMFX −40°C to +85°C ADCS7477AISDX −40°C to +85°C ADCS7478AIMFX −40°C to +85°C ADCS7478AISDX −40°C ...

Page 3

... Absolute Maximum Ratings 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 Voltage on Any Digital Pin to GND Input Current at Any Pin (Note 3) ESD Susceptibility Human Body Model ...

Page 4

Symbol Parameter POWER SUPPLY CHARACTERISTICS V Supply Voltage DD Normal Mode (Static Normal Mode (Operational) Shutdown Mode Power Consumption, Normal Mode (Operational Power Consumption, Shutdown Mode ANALOG INPUT CHARACTERISTICS V Input Range Leakage ...

Page 5

ADCS7477 Converter Electrical Characteristics The following specifications apply for V limits apply for T = −40°C to +85°C: all other limits T A Symbol Parameter STATIC CONVERTER CHARACTERISTICS Resolution with No Missing Codes INL Integral Non-Linearity DNL Differential Non-Linearity V ...

Page 6

Symbol Parameter DIGITAL INPUT CHARACTERISTICS V Input High Voltage IH V Input Low Voltage IL I Input Current IN C Digital Input Capacitance IND DIGITAL OUTPUT CHARACTERISTICS V Output High Voltage OH V Output Low Voltage OL I TRI-STATE Leakage ...

Page 7

ADCS7478 Converter Electrical Characteristics The following specifications apply for V limits apply for T = −40°C to +85°C: all other limits T A Symbol Parameter STATIC CONVERTER CHARACTERISTICS Resolution with No Missing Codes INL Integral Non-Linearity DNL Differential Non-Linearity V ...

Page 8

Symbol Parameter DIGITAL INPUT CHARACTERISTICS V Input High Voltage IH V Input Low Voltage IL I Digital Input Current IN C Input Capacitance IND DIGITAL OUTPUT CHARACTERISTICS V Output High Voltage OH V Output Low Voltage OL I TRI-STATE Leakage ...

Page 9

Timing Test Circuit ADCS7476/ADCS7477/ADCS7478 Timing Specifications The following specifications apply for V other limits T = 25°C, unless otherwise noted. A Symbol Parameter t CONVERT t (Note 5) QUIET t Minimum CS Pulse Width SCLK Setup ...

Page 10

Specification Definitions APERTURE DELAY is the time after the falling edge when the input signal is acquired or held for conversion. APERTURE JITTER (APERTURE UNCERTAINTY) is the variation in aperture delay from sample to sample. Aperture jitter ...

Page 11

Timing Diagrams FIGURE 1. ADCS7476 Serial Interface Timing Diagram FIGURE 2. ADCS7477 Serial Interface Timing Diagram 11 20057702 20057703 www.national.com ...

Page 12

FIGURE 3. ADCS7478 Serial Interface Timing Diagram 12 20057704 ...

Page 13

Typical Performance Characteristics 100 kHz unless otherwise stated. ADCS7476 ADCS7476 DNL ADCS7476 Spectral Response @ 100kHz Input ADCS7476 THD vs. Input Frequency, 600 kSPS T = +25° 3V SAMPLE ADCS7476 INL 20057706 ADCS7476 THD vs. ...

Page 14

ADCS7476 SINAD vs. Input Frequency, 600 kSPS ADCS7476 SNR vs. f www.national.com ADCS7476 SINAD vs. Input Frequency, 1 MSPS 20057753 SCLK 20057756 14 20057754 ADCS7476 SINAD vs. f SCLK 20057757 ...

Page 15

ADCS7477 DNL ADCS7477 Spectral Response @ 100kHz Input ADCS7477 SINAD vs. f SCLK ADCS7477 INL 20057770 ADCS7477 SNR vs. f 20057772 20057774 15 20057771 SCLK 20057773 www.national.com ...

Page 16

ADCS7478 DNL ADCS7478 Spectral Response @ 100kHz Input ADCS7478 SINAD vs. f www.national.com 20057760 20057762 SCLK 20057764 16 ADCS7478 INL 20057761 ADCS7478 SNR vs. f SCLK 20057763 ...

Page 17

Applications Information 1.0 ADCS7476/77/78 OPERATION The ADCS7476/77/78 are successive-approximation analog- to-digital converters designed around a charge-redistribution digital-to-analog converter. Simplified schematics of the ADCS7476/77/78 in both track and hold operation are shown in Figure 4 and Figure 5, respectively ...

Page 18

SCLK. If instead the first SCLK edge after CS goes low is a falling edge, the first leading zero may not be set up in time for a microprocessor or DSP to read it correctly. The remain- ing data bits ...

Page 19

TYPICAL APPLICATION CIRCUIT A typical application of the ADCS7476/77/78 is shown in Figure 8. The combined analog and digital supplies are pro- vided in this example by the National LP2950 low-dropout voltage regulator, available in a variety of fixed ...

Page 20

EXITING SHUTDOWN MODE To exit shutdown mode, bring CS back low. Upon bringing CS low, the ADCS7476/77/78 will begin powering up. Power up typically takes 1 µs. This microsecond of power-up delay results in the first conversion result being ...

Page 21

Power Management When the ADCS7476/77/78 is operated continuously in nor- mal mode, throughput MSPS can be achieved. The user may ...

Page 22

Physical Dimensions Order Number ADCS7476AIMF, ADCS7476AIMFX, ADCS7477AIMF, ADCS7477AIMFX, ADCS7478AIMF or Order Number ADCS4746AISD, ADCS7476AISDX, ADCS7477AISD, ADCS4747AISDX, ADCS7478AISD, ADCS7478AISDX www.national.com inches (millimeters) unless otherwise noted 6-Lead SOT-23 ADCS7478AIMFX NS Package Number MF06A 6-Lead LLP NS Package Number SDB06A 22 ...

Page 23

Notes 23 www.national.com ...

Page 24

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

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