HSADC85 Datasheet, PDF (1/3 Pages) API Technologies Corp – 12-Bit, 10μS Hybrid ADC

12-Bit, 10µS H ybrid AD C
FEATURES
• –55ºC to +125ºC Operation
• M IL-STD-883 Processing
• 10 µS Conversion Time
• Low Power, 1.32W (max)
• Replacement for A DC85/84 and A DC-HX12B/HZ12B
DESCRIPTION
The HS A DC85 is specifically designed to replace
the A DC581,. A DC85/84 and A DC-HX12B/HZ12B.
Complete with internal clock, reference and input
buffer amplifier, the HS A DC85 can also be used
with an external clock for synchronization (see
EXTERNA L CLOCK section under A PPLICA TIONS
INFORM A TION). Conversion speeds of 10 µs for 12-
Bit operation and 8 µs for 10-Bit operation allows
the HS A DC85 to be used in a wide range of
applications. Short cycle and internal clock rate
may also be externally adjusted to provide faster
conversion speeds at lower resolutions. Gain and
offset can be externally trimmed to zero,
providing full-scale accuracy of ±0.012% ±1/2 LSB.
Data is obtainable in both parallel and serial form
with corresponding clock and status signals.
Digital input and output signals are DTL/TTL
compatible. Other features include:
HS ADC85
D ata Converter Line
Low Power — A 33% reduction in power
dissipation allows the HS A DC85 to operate
reliably at high temperatures without failure due
to excessive package heating. Total power
consumed is only 1.32 W maximum.
Selectable Input Ranges — Input scaling resistors
allow the selection of input ranges of ±2.5V , ±5V ,
±10V , 0 to +5V or 0 to +10V .
Reliability — Packaged in a 32-pin hermetically sealed
case and utilizing advanced devices and laser-
trimmed thin film resistors, the HS A DC85 is one of
the most reliable analog-to-digital converters to date.
Specified over the –55ºC to +125ºC temperature
range, it has a low linearity drift specification of only
±2 ppm/ºC maximum. A ll “ B” versions of the HS
A DC85 series are fully screened and tested to M IL-
STD-883 Rev. C, Level B requirements.
FUNCTIONAL DIAGRAM
LSB
MSB MSB
1 2 3 4 5 6 7 8 9 10 11 12 13
26
ANA GND
DIG GND ¹⁵
16
+5V
– 5V ²⁸
– 15V ³¹
DAC
27
24
25
23
GAIN 10V 20V BIPOLAR
SAR
COM P
–
+
22
CLOCK
REF
–
+
20
STATUS
32
SERIAL OUT
14
SHORT CYCLE
21
START
17 _CLOCK
19 ^{RATE CONTROL}
CLOCK OUT
18
REF OUT
29
BUFFER OUT
30
BUFFER IN
165Cedar Hill Street,Marlborough,MA01752 Tel:[phone] Fax: [phone]
www.SpectrumMicrowave.com