adc-228a Murata Manufacturing Co., Ltd, adc-228a Datasheet

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adc-228a

Manufacturer Part Number
adc-228a
Description
8-bit, 20mhz, Complete Flash A/d Converter
Manufacturer
Murata Manufacturing Co., Ltd
Datasheet
1.ADC-228A.pdf (4 pages)
FEATURES
■
■
■
■
■
■
■
www.murata-ps.com
8-Bit fl ash A/D converter
20MHz sampling rate
Complete support circuitry
Low power, 900mW
Sample-hold not required
Three-state outputs
MIL-STD-883 versions
NO CONNECTION 8
NO CONNECTION 9
ANALOG INPUT 5
+15V SUPPLY 19
–15V SUPPLY 10
+5V SUPPLY 1
www.murata-ps.com/rohs
GROUND 7
GROUND 6
GROUND 4
GROUND 2
CLOCK 18
For full details go to
CS1 11
CS2 12
　
BUFFER
INPUT
www.murata-ps.com
& TEMPERATURE
COMPENSATION
PRODUCT OVERVIEW
circuitry and a fl ash A/D converter to digitize
high-speed analog signals at a rate of 20 million
samples per second. The ADC-228A contains an
8-bit, 20MHz, fl ash A/D, a wideband analog input
buffer, a precision voltage reference, temperature
compensation circuitry, reference trims, and a
three-state output buffer in a 24-pin package.
LINEARIZATION
REFERENCE
NETWORK
NETWORK
VOLTAGE
The ADC-228A combines analog front-end
The ADC-228A offers signifi cant savings by
Figure 1. Functional Block Diagram
CONVERTER
20MHz
FLASH
8-BIT
8-Bit, 20MHz, Complete Flash A/D Converter
Pin
10
11
12
Technical enquiries email: data.acquisition@murata-ps.com, tel:
1
2
3
4
5
6
7
8
9
+5V REFERENCE OUT
NO CONNECTION
NO CONNECTION
ANALOG INPUT
–15V SUPPLY
+5V SUPPLY
FUNCTION
GROUND
GROUND
GROUND
GROUND
combining all of the circuitry in a single package.
Valuable board real estate is saved, and design
time and manufacturing costs are reduced.
DDIP package and is available in the commercial,
0 to +70°C, or military, –55 to +125°C, tem-
perature ranges. A MIL-STD-883 version is also
available. Operation is from ±15V and +5V power
supplies.
CS1
CS2
TRI-STATE
INPUT/OUTPUT CONNECTIONS
BUFFER
The ADC-228A is housed in a 24-pin ceramic
MDA_ADC-228A.B01 Page 1 of 4
Pin
24
23
22
21
20
19
18
17
16
15
14
13
ADC-228A
13 NO CONNECTION
20 NO CONNECTION
14 BIT 1 (MSB)
15 BIT 2
16 BIT 3
17 BIT 4
21 BIT 5
22 BIT 6
23 BIT 7
24 BIT 8 (LSB)
3 +5V REF. OUT
NO CONNECTION
NO CONNECTION
CLOCK INPUT
+15V SUPPLY
BIT 1 (MSB)
BIT 8 (LSB)
FUNCTION
+1 508 339 3000
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2

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adc-228a Summary of contents

Page 1

... Valuable board real estate is saved, and design time and manufacturing costs are reduced. The ADC-228A is housed in a 24-pin ceramic DDIP package and is available in the commercial +70°C, or military, –55 to +125°C, tem- perature ranges. A MIL-STD-883 version is also available. Operation is from ± ...

Page 2

... PHYSICAL/ENVIRONMENTAL –55 to +125°C –65 to +150°C 24-pin, ceramic DDIP 0.3 ounces (8.5 grams) Technical enquiries email: sales@murata-ps.com, tel: MDA_ADC-228A.B01 Page MAX. UNITS ±1.5 LSB ±1.5 LSB — % — deg. — ns — ps maximum S –53 dB – ...

Page 3

... Bypass all the analog and digital supplies and the +5V REFERENCE (pin 3) to ground with a 4.7µF, 25V tantalum electrolytic capacitor in parallel with a 0.1µF ceramic capacitor. Table 1. ADC-228A Unipolar Output Coding ANALOG INPUT CODE +4.96V +FS – ...

Page 4

... Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com Technical enquiries email: sales@murata-ps.com, tel: MDA_ADC-228A.B01 Page 508 339 3000 ...

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