ADC-305-1 Murata Power Solutions Inc, ADC-305-1 Datasheet

ADC-305-1

Manufacturer Part Number

ADC-305-1

Description

ADC Single 2-Step Flash 20MSPS 8-Bit Parallel 24-Pin PDIP

Manufacturer

Murata Power Solutions Inc

Datasheet

1.ADC-305-1.pdf (6 pages)

Specifications of ADC-305-1

Package

24PDIP

Resolution

8 Bit

Sampling Rate

20000 KSPS

Architecture

2-Step Flash

Number Of Analog Inputs

Digital Interface Type

Parallel

Input Type

Voltage

Polarity Of Input Voltage

Unipolar

Current page: 1 of 6
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FEATURES

■

DATEL

8-bit resolution, 20MHz min. sampling rate

±½LSB max. differential nonlinearity error

18MHz input signal bandwidth

Subranging, S&H enclosed

+5V single power, low 85mW max. dissipation

CMOS compatible logic input

3-State TTL compatible output

OUTPUT ENABLE 1

BIT 1 (MSB) 10

BIT 8 (LSB) 3

A/D CLK 12

+DV

DGND 2

BIT 7 4

BIT 6 5

BIT 5 6

BIT 4 7

BIT 3 8

BIT 2 9

LATCHES

LOWER

UPPER

DATA

GENERATOR

• 11 Cabot Boulevard, Mansﬁ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com

CLOCK

OBSOLETE PRODUCT

PRODUCT OVERVIEW

pling, CMOS, subranging (two-pass) A/D converter.

It processes signals at speeds comparable to a full

ﬂ ash converter by using a sub-ranging conversion

technique with multiple comparator blocks, each

containing a sample and hold ampliﬁ er.

Contact Factory for Replacement Model

DATEL's ADC-305 is an 8-bit, 20MHz sam-

The ADC-305 features CMOS low power dis-

Figure 1. Functional Block Diagram

ENCODER

LOWER

UPPER

(4 BIT)

Both the ADC-305-1 and the ADC-305-3 have the same pin assignment.

CLOCK INPUT (A/D CLK)

OUTPUT ENABLE (OE)

COMPARATORS

WITH S/H (4 BIT)

COMPARATORS

WITH S/H (4 BIT)

BIT 1 (MSB)

+DVS (+5V)

BIT 8 (LSB)

FUNCTION

A BLOCK

B BLOCK

DGND

UPPER

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

INPUT/OUTPUT CONNECTIONS

8-Bit, 20MHz CMOS A/D Converters

sipation (60mW typical) and a wide 18MHz (–1dB)

input signal bandwidth.

The ADC-305-1 is packaged in 400 mil 24-pin DIP

and the ADC-305-3 in 300 mil 24-pin SOP.

3-state TTL compatible output logic, +5V single

power operation, self bias mode and low cost.

REFERENCE

Other features are CMOS compatible input logic,

VOLTAGE

30 Mar 2011 MDA_ADC-305.B02 Page 1 of 6

REFERENCE TOP (VRT)

ANALOG INPUT (VIN)

REF. BOTTOM (VRB)

SELF BIAS 1 (VRBS)

SELF BIAS 2 (VRTS)

+AVS (+5V)

+DVS (+5V)

FUNCTION

DGND

AGND

ADC-305

19 V

18 +AV

17 V

16 V

15 +AV

14 +AV

13 +DV

24 DGND

23 V

22 V

21 AGND

20 AGND

RTS

RBS

Related parts for ADC-305-1

ADC-305-1 Summary of contents

Page 1

... The ADC-305 features CMOS low power dis- Pin 1 OUTPUT ENABLE (OE CLOCK INPUT (A/D CLK) Both the ADC-305-1 and the ADC-305-3 have the same pin assignment. LOWER LOWER DATA ENCODER LATCHES (4 BIT) LOWER ENCODER COMPARATORS (4 BIT) UPPER DATA LATCHES UPPER COMPARATORS ENCODER ...

Page 2

... ADC-305-1 24-pin Plastic DIP ADC-305-3 24-pin Plastic SOP ADC-305-1 ADC-305-3 and +DVS be powered from a single supply since a time lag between start up of separate supplies could induce latch up. Other external logic circuits must be powered from a separate digital supply. +DVS (pins 11 and 13) and +AVs (pins 14, 15 and 18) should be tied together externally ...

Page 3

... Cabot Boulevard, Mansﬁ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com 8-Bit, 20MHz CMOS A/D Converters DATA BITS OUT HEX MSB LSB N+2 N+3 N+4 N AGND Analog Input +AV V RTS 16 Generates +2.6V when shorted with Mar 2011 MDA_ADC-305.B02 Page ADC-305 N ...

Page 4

... Cabot Boulevard, Mansﬁ eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com 8-Bit, 20MHz CMOS A/D Converters N+3 N+2 S(N+2) C(N+2) S(N+3) C(N+3) MD(N+1) MD(N+2) RV(N+1) RV(N+2) S(3) H(3) C(3) LD(N) H(N+3) C(N+1) S(N+3) LD(N+1) N Mar 2011 MDA_ADC-305.B02 Page ADC-305 ...

Page 5

... SNR + THD vs. Input Signal Frequency Input Signal Frequency dB +DVS=+AVS=+ 20.48MHz Ta=25° 10MHz 1 Input Signal Frequency Input Signal Frequency 30 Mar 2011 MDA_ADC-305.B02 Page ADC-305 47μF BIT 1 (MSB) BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 (LSB) Clock Input (A/D CLK 75Ω) IN +DVS=+AVS=+ 20.48MHz Ta=25° ...

Page 6

... The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Speciﬁ cations are subject to change without notice. www.datel.com • e-mail: help@datel.com 8-Bit, 20MHz CMOS A/D Converters ADC-305-1 24-Pin DIP (Plastic) 400mil 2.0g 0.400 (10.16) 0.011 ± ...

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