AD1380_15 Datasheet, PDF (1/12 Pages) Analog Devices – Low Cost 16-Bit Sampling ADC

FEATURES
Complete sampling 16-bit ADC with reference and clock
50 kHz throughput
±1/2 LSB nonlinearity
Low noise SHA: 300 μV p-p
32-lead hermetic DIP
Parallel output
Low power: 900 μW
APPLICATIONS
Medical and analytical instrumentation
Signal processing
Data acquisition systems
Professional audio
Automatic test equipment (ATE)
Telecommunications
GENERAL DESCRIPTION
The AD1380 is a complete, low cost 16-bit analog-to-digital
converter, including internal reference, clock and sample/hold
amplifier. Internal thin-film-on-silicon scaling resistors allow
analog input ranges of ±2.5 V, ±5 V, ±10 V, 0 V to +5 V and
0 V to +10 V.
Important performance characteristics of the AD1380 include
maximum linearity error of ±0.003% of FSR (AD1380KD) and
maximum 16-bit conversion time of 14 μs. Transfer
characteristics of the AD1380 (gain, offset and linearity) are
specified for the combined ADC/sample-and-hold amplifier
(SHA), so total performance is guaranteed as a system. The
AD1380 provides data in parallel with corresponding clock and
status outputs. All digital inputs and outputs are TTL or 5 V
CMOS-compatible.
The serial output function is no longer available after date
code 0120.
Low Cost
16-Bit Sampling ADC
AD1380
FUNCTIONAL BLOCK DIAGRAM
S/H +10V +20V
COMPARATOR GAIN
OUT SPAN SPAN BIPOLAR
IN
ADJ
32
6
7
4
5
3
AD1380
24 MSB
S/H IN 31
+5V 29
SAMPLE
AND
HOLD
REF
ADC
23 BIT 2
10 BIT 15
DIGITAL ₃₀
COMMON
+15V 2
ANALOG ₈
COMMON
TIMING CIRCUITRY
9 LSB
25 NC
27 BUSY
–15V 1
28
START
CONVERT
26
CLOCK
OUT
NC = NO CONNECT
Figure 1.
Rev. D
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