ADC541 Datasheet, PDF (1/2 Pages) API Technologies Corp – 8-Bit, Wide Temperature

8-Bit, W ide Temperature 2.5µS AD Cs
ADC541/542
Data Converter Line
FEATU RES
• 2.5µS conversion time
• Low Power: 650mW
• W ide temperature range models: -55ºC to +125ºC operation
• M IL-STD-883 or commercial/industrial processing
• Plug-in replacements for A DC82
DESCRIPTIO N
The A DC541/542 Series are fast, low power, hybrid IC
analog-to-digital converters (A CDs). The series
features 8-bit resolution and accuracy with 2.5µS
typical conversion time. The lower power drain of
650 mW is from standard ±15 V DC and +5V DC power
supplies. A ll models are hermetically seated in 24-pin
DIP style packages and are complete with precision
thin-film DA C, clock, comparator reference and
successive approximation register.
The A DC541C-8 and A DC542C-8 are processed to
commercial/industrial standards and operate –25ºC to
+85ºC. A DC541B-8 and A DC542B-8 are processed to
M IL-STD-883 Rev.C, Level B requirements, and
operate –55ºC to +125ºC. In addition, the A DC542
versions are plug-in replacements for the A DC82.
A ll models can be externally pin-connected for 3
unipolar and 3 bipolar input ranges. Output coding
in the bipolar mode is user selectable as either offset
binary or 2’s complement. A DC541/ 542 feature an
overall temperature coefficient of ± 45 ppm/ºC and
long-term stability if 0.1% /year.
A DC541/542 models provide systems designers with
greater flexibiity savings in space and weight and the
ultimate in reliability. Their compact size, 8-bit
resolution, accuracy an extensive self-contained
features are particularly well suited to
microprocessor applicat ions.
FU N C TION AL D IAG RAM
+15V
ANA GND
22 (19)
2 (17)
4
SUM M ING JUNCT
10V INPUT
20V INPUT
BIPOLA R OFFSET
-15V
3 (18)
24 (14)
23 (15)
1 (16)
20 (20)
21
5k
5k
6.2k
COM P
DAC
REF
CLOCK OUT
+5V
KEY
LINES
ALL UNITS
AD541 ONLY
AD542 ONLY
(1)
14 (24)
15
PIN OUTS
n - ADC541
(n)-A DC542
CLOCK
SUCCESSIV E
APPROXIM ATION
REGISTER
165Cedar Hill Street,Marlborough,MA01752 Tel:[phone] Fax: [phone]
www.SpectrumMicrowave.com
(13)
GAIN ADJ
19 (4)
18 (5)
17 (6)
16 (7)
8 (8)
7 (9)
6 (10)
5 (11)
9 (12)
10 (3)
10 (23)
(22)
(21)
12 (2)
11
BIT 8 (LSB)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1 (M SB)
M SB
STA TUS
STA RT
CLOCK IN
SERIA L OUT
DIG GND