ADC-304 View Datasheet(PDF) - DATEL Data Acquisition products
Part Name
Description
Manufacturer
ADC-304 Datasheet PDF : 5 Pages
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INN O VAT IO N a n d E X C E L L E N C E
ADC-304
8-Bit, 20MHz, Low-Power
Flash A/D Converters
FEATURES
• 8-bit resolution
• 20MHz conversion rate
• ±1/2LSB maximum nonlinearity
• 8MHz input bandwidth
• Low power consumption, 375mW
• TTL compatible
• Single or dual supply operation
GENERAL DESCRIPTION
Datel’s ADC-304 is an 8-bit, 20MHz analog-to-digital flash
converter. The ADC-304 offers many performance features not
obtainable from other flash A/D’s.
Key reatures include a low power dissipation of 375mW and
TTL-compatible outputs. A wide analog input bandwidth of
8MHz (–3dB) allows operation without the need of a sample-
hold. Also, single +5V supply operation is obtainable with an
input range of +3 to +5V, eliminating the need for an additional
power supply. A 0 to –2V input range is available with ±5V
supply operation.
Another novel feature of the ADC-304 is its user-selectable
output coding. The MINV and LINV pins allow selection of
binary, complementary binary, and if external offset circuitry is
used for bipolar inputs, offset binary, two’s complement and
complementary two’s complement coding.
The ADC-304 is supplied in a 28-pin plastic DIP or a 28-pin
plastic SOP package. Operating temperature range is –20 to
+75°C. Storage temperature range is –55 to +150°C.
CLOCK
INPUT
VT
VT SENSE
ANALOG
INPUT
ANALOG
INPUT
VB
VM
VB SENSE
MINV
1
R/2
R
2
R
3
R
128
129
R/2
R
256
6
6
7
6
6
1
R/2
COMPARATOR
LATCH
THESE PINS ARE AVAILABLE ON SOP PACKAGE ONLY
Figure 1. ADC-304 Functional Block Diagram
LINV
BIT 8 (LSB)
BIT 7
BIT 6
BIT 5
OVERRANGE
BIT 4
BIT 3
BIT 2
BIT 1 (MSB)
INPUT/OUTPUT CONNECTIONS
PLASTIC DIP PACKAGE
PIN FUNCTION
PIN FUNCTION
1 BIT 1 (MSB)
2 BIT 2
3 BIT 3
4 BIT 4
5 DIGITAL GND
6 +5V POWER
7 –5.2V POWER
8 –5.2V POWER
9 –5.2V POWER
10 +5V POWER
11 DIGITAL GND
12 LINV
13 BIT 5
14 BIT 6
28 MINV
27 VM
26 VB
25 ANALOG GND
24 NO CONNECT
23 ANALOG INPUT
22 NO CONNECT
21 ANALOG INPUT
20 NO CONNECT
19 ANALOG GND
18 VT
17 CLOCK INPUT
16 BIT 8 (LSB)
15 BIT 7
INPUT/OUTPUT CONNECTIONS
PLASTIC SOP PACKAGE
PIN FUNCTION
PIN FUNCTION
1 ANALOG INPUT 28 ANALOG INPUT
2 VB SENSE
27 VT SENSE
3 ANALOG GND 26 ANALOG GND
4 VB
25 VT
5 VM
24 CLOCK INPUT
6 NO CONNECT 23 BIT 8 (LSB)
7 MINV
22 BIT 7
8 BIT 1 (MSB)
21 BIT 6
9 BIT 2
20 BIT 5
10 BIT 3
19 LINV
11 BIT 4
18 DIGITAL GND
12 DIGITAL GND 17 +5V POWER
13 +5V POWER
16 OVERRANGE
14 –5.2V POWER 15 –5.2V POWER
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1151 (U.S.A.) • Tel: (508) 339-3000 Fax: (508) 339-6356 • For immediate assistance (800) 233-2765
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