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ADS117 Schematic ( PDF Datasheet ) - Datel

Teilenummer ADS117
Beschreibung Low-Power Sampling A/D Converters
Hersteller Datel
Logo Datel Logo 




Gesamt 6 Seiten
ADS117 Datasheet, Funktion
www.DataSheet4®U.com
®
FEATURES
12-bit resolution
No missing codes
2MHz minimum throughput
Functionally complete
Small 24-pin DDIP
Low-power, 1.6 Watts
Three-state output buffers
Samples to Nyquist frequencies
GENERAL DESCRIPTION
DATEL's ADS-117 is a functionally complete, 12-bit, 2MHz,
sampling A/D converter. Its standard, 24-pin, double-width
DIP contains a fast-settling sample-hold amplifier, a 12-bit
subranging (two-step) A/D converter, a precision reference,
three-state output register and all the timing and control logic
necessary to operate from a single start convert pulse. Digital
input and output levels are TTL.
Total harmonic distortion (THD) and signal-to-noise ratio
(including distortion) typically run –78dB and 70dB,
respectively, with full scale inputs up to 100kHz. The ADS-
117 requires ±15V and +5V power supplies and typically
consumes 1.6 Watts. Models are available for use in either
commercial (0 to +70°C) or military (–55 to +125°C) operating
temperature ranges.
ADS-117
12-Bit, 2MHz, Low-Power
Sampling A/D Converters
INPUT/OUTPUT CONNECTIONS
PIN FUNCTION
PIN FUNCTION
1 BIT 12 (LSB)
2 BIT 11
3 BIT 10
4 BIT 9
5 BIT 8
6 BIT 7
7 BIT 6
8 BIT 5
9 BIT 4
10 BIT 3
11 BIT 2
12 BIT 1 (MSB)
24 –15V SUPPLY
23 ANALOG GROUND
22 +15V SUPPLY
21 +10V REFERENCE
20 BIPOLAR
19 ANALOG INPUT
18 COMP BIN
17 ENABLE (1-12)
16 START CONVERT
15 EOC
14 DIGITAL GROUND
13 +5V SUPPLY
+10V REF. 21
BIPOLAR 20
ANALOG INPUT 19
REF
S2
FLASH
S/H ADC
S1
BUFFER
+
DAC
17 ENABLE (1-12)
12 BIT 1 (MSB)
11 BIT 2
10 BIT 3
9 BIT 4
8 BIT 5
7 BIT 6
6 BIT 7
5 BIT 8
4 BIT 9
3 BIT 10
2 BIT 11
1 BIT 12 (LSB)
COMP BIN 18
START CONVERT 16
EOC 15
TIMING AND
CONTROL LOGIC
13
+5V SUPPLY
14
DIGITAL GROUND
22
+15V SUPPLY
23
ANALOG GROUND
Figure 1. ADS-117 Functional Block Diagram
24
–15V SUPPLY
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






ADS117 Datasheet, Funktion
www.DataSheet4U.com
ADS-117
MECHANICAL DIMENSIONS INCHES (mm)
®
1.31 MAX.
(33.27)
24
1
13
0.80 MAX.
(20.32)
12
Dimension Tolerances (unless otherwise indicated):
2 place decimal (.XX) ±0.010 (±0.254)
3 place decimal (.XXX) ±0.005 (±0.127)
Lead Material: Kovar alloy
Lead Finish: 50 microinches (minimum) gold plating
over 100 microinches (nominal) nickel plating
0.235 MAX.
(5.969)
0.100 TYP.
(2.540)
1.100
(27.940)
PIN 1 INDEX
0.200 MAX.
(5.080)
0.190 MAX.
(4.826)
0.018 ±0.002
(0.457)
0.100
(2.540)
0.040
(1.016)
SEATING
PLANE
0.025
(0.635)
0.010
+0.002
–0.001
(0.254)
0.600 ±0.010
(15.240)
0.100
(2.540)
®
ORDERING INFORMATION
MODEL NUMBER
ADS-117MC
ADS-117MM
ADS-117/883
OPERATING TEMP. RANGE
0 to +70°C
–55 to +125°C
–55 to +125°C
ACCESSORIES
ADS-EVAL1
HS-24
Evaluation Board (without ADS-117)
Heat Sink for all ADS-117 models
For MIL-STD-883 product specification or availability of surface-mount packaging, contact DATEL. Receptacles for PC mounting
can be ordered through AMP Inc., Part # 3-331272-8 (Component Lead Socket), 24 required.
® ® ISO 9001
REGISTERED
DS-0230F
07/04
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
Internet: www.datel.com E-mail:[email protected]
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444
DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 1-34-60-01-01
DATEL GmbH München, Germany Tel: 89-544334-0
DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025
DATEL China, Shanghai, China Tel:011-86-51317199
DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein
do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.

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