AD7472ARUZ-REEL7 datasheet, PDF

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AD7472ARUZ-REEL7: DescriptionAnalog to Digital Converters - ADC 12-Bit 2.7V-5.25V 1.5MSPS Lo Pwr; CategoryAnalog mixed-signal IC converter; File Size245KB，20 Pages; ManufacturerADI; Websitehttps://www.analog.com; Environmental Compliance

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Analog to Digital Converters - ADC 12-Bit 2.7V-5.25V 1.5MSPS Lo Pwr

AD7472ARUZ-REEL7 Parametric

Parameter Name	Attribute value
Brand Name	Analog Devices Inc
Is it lead-free?	Contains lead
Is it Rohs certified?	conform to
Maker	ADI
Parts packaging code	TSSOP
package instruction	TSSOP, TSSOP24,.25
Contacts	24
Manufacturer packaging code	RU-24
Reach Compliance Code	compliant
ECCN code	EAR99
Maximum analog input voltage	2.5 V
Minimum analog input voltage
Maximum conversion time	0.538 µs
Converter type	ADC, SUCCESSIVE APPROXIMATION
JESD-30 code	R-PDSO-G24
JESD-609 code	e3
length	7.8 mm
Maximum linear error (EL)	0.0488%
Humidity sensitivity level	1
Number of analog input channels	1
Number of digits	12
Number of functions	1
Number of terminals	24
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Output bit code	BINARY
Output format	PARALLEL, WORD
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP24,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
power supply	3/5 V
Certification status	Not Qualified
Sampling rate	1.5 MHz
Sample and hold/Track and hold	TRACK
Maximum seat height	1.2 mm
Nominal supply voltage	3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	4.4 mm
Base Number Matches	1

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FEATURES

Specified for V

of 2.7 V to 5.25 V

1.75 MSPS for AD7470 (10-Bit)

1.5 MSPS for AD7472 (12-Bit)

Low Power

AD7470: 3.34 mW Typ at 1.5 MSPS with 3 V Supplies

7.97 mW Typ at 1.75 MSPS with 5 V Supplies

AD7472: 3.54 mW Typ at 1.2 MSPS with 3 V Supplies

8.7 mW Typ at 1.5 MSPS with 5 V Supplies

Wide Input Bandwidth

70 dB Typ SNR at 500 kHz Input Frequency

Flexible Power/Throughput Rate Management

No Pipeline Delays

High Speed Parallel Interface

Sleep Mode: 50 nA Typ

24-Lead SOIC and TSSOP Packages

GENERAL DESCRIPTION

1.75 MSPS, 4 mW

10-Bit/12-Bit Parallel ADCs

AD7470/AD7472

FUNCTIONAL BLOCK DIAGRAM

REF IN

DRIVE

T/H

10-/12-BIT

SUCCESSIVE

APPROXIMATION

ADC

DB9 (DB11)

OUTPUT

DRIVERS

DB0

CLK IN

CONVST

CONTROL

LOGIC

BUSY

AD7470/AD7472

AGND

DGND

The AD7470/AD7472 are 10-bit/12-bit high speed, low power,

successive approximation ADCs. The parts operate from a single

2.7 V to 5.25 V power supply and feature throughput rates up to

1.5 MSPS for the 12-bit AD7472 and up to 1.75 MSPS for the

10-bit AD7470. The parts contain a low noise, wide bandwidth

track-and-hold amplifier that can handle input frequencies in

excess of 1 MHz.

The conversion process and data acquisition are controlled

using standard control inputs, allowing easy interfacing to

microprocessors or DSPs. The input signal is sampled on the

falling edge of

CONVST,

and conversion is also initiated at

this point. BUSY goes high at the start of conversion and

goes low 531.66 ns after falling edge of

CONVST

(AD7472

with a clock frequency of 26 MHz) to indicate that the con-

version is complete. There are no pipeline delays associated

with the parts. The conversion result is accessed via standard

and

signals over a high speed parallel interface.

The AD7470/AD7472 use advanced design techniques to

achieve very low power dissipation at high throughput rates. With

3 V supplies and 1.5 MSPS throughput rates, the AD7470

typically consumes, on average, just 1.1 mA. With 5 V supplies

and 1.75 MSPS, the average current consumption is typically

1.6 mA. The part also offers flexible power/throughput rate

management. Operating the AD7470 with 3 V supplies and

500 kSPS throughput reduces the current consumption to 713

µA.

At 5 V supplies and 500 kSPS, the part consumes 944

µA.

AD7470 IS A 10-BIT PART WITH DB0 TO DB9 AS OUTPUTS.

AD7472 IS A 12-BIT PART WITH DB0 TO DB11 AS OUTPUTS.

It is also possible to operate the parts in an auto sleep mode,

where the part wakes up to do a conversion and automatically

enters sleep mode at the end of conversion. This method allows

very low power dissipation numbers at lower throughput rates.

In this mode, the AD7472 can be operated with 3 V supplies at

100 kSPS, and consume an average current of just 124

µA.

5 V supplies and 100 kSPS, the average current consumption is

171

µA.

The analog input range for the part is 0 V to REF IN. The 2.5 V

reference is applied externally to the REF IN pin. The conver-

sion rate is determined by the externally-applied clock.

PRODUCT HIGHLIGHTS

1. High Throughput with Low Power Consumption. The

AD7470 offers 1.75 MSPS throughput and the AD7472

offers 1.5 MSPS throughput rates with 4 mW power

consumption.

2. Flexible Power/Throughput Rate Management. The conver-

sion rate is determined by an externally-applied clock allow-

ing the power to be reduced as the conversion rate is reduced.

The part also features an auto sleep mode to maximize power

efficiency at lower throughput rates.

3. No Pipeline Delay. The part features a standard successive

approximation ADC with accurate control of the sampling

instant via a

CONVST

input and once off conversion control.

REV. B

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

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Description	Analog to Digital Converters - ADC 12-Bit 2.7V-5.25V 1.5MSPS Lo Pwr	Analog to Digital Converters - ADC 12-Bit 2.7V-5.25V 1.5MSPS Lo Pwr

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