LTC1605
16-Bit, 100ksps,
Sampling ADC
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FEATURES
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DESCRIPTIO
The LTC ®1605 is a 100ksps, sampling 16-bit A/D converter that draws only 55mW (typical) from a single 5V
supply. This easy-to-use device includes sample-andhold, precision reference, switched capacitor successive
approximation A/D and trimmed internal clock.
Single 5V Supply
Bipolar Input Range: ±10V
Power Dissipation: 55mW Typ
Guaranteed No Missing Codes
Sample Rate: 100ksps
Integral Nonlinearity: ±2.0LSB Max
Signal-to-Noise Ratio: 86dB Typ
Operates with Internal or External Reference
Internal Synchronized Clock
Improved 2nd Source to ADS7805 and AD976
28-Pin 0.3” PDIP, SSOP and SW Packages
The LTC1605’s input range is an industry standard ±10V.
Maximum DC specs include ±2.0LSB INL and 16-bits no
missing codes over temperature. An external reference
can be used if greater accuracy over temperature is
needed.
The ADC has a microprocessor compatible, 16-bit or two
byte parallel output port. A convert start input and a data
ready signal (BUSY) ease connections to FIFOs, DSPs and
microprocessors.
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APPLICATIO S
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Industrial Process Control
Multiplexed Data Acquisition Systems
High Speed Data Acquisition for PCs
Digital Signal Processing
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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TYPICAL APPLICATIO
Typical INL Curve
Low Power, 100kHz, 16-Bit Sampling ADC on 5V Supply
2.0
5V
1.5
0.1µF
10µF
28
27
1.0
±10V 200Ω
INPUT
1 VIN
6 TO 13
15 TO 22
20k
16-BIT
SAMPLING ADC
33.2k
4k
D15 TO D0
16-BIT
OR 2 BYTE
PARALLEL
BUS
10k
0.5
0
–0.5
–1.0
4 CAP
–1.5
BUSY 26
2.2µF
BUFFER
3 REF
INL (LSBs)
VDIG VANA
CONTROL
LOGIC AND
TIMING
4k
REFERENCE
CS 25
R/C 24
–2.0
DIGITAL
CONTROL
SIGNALS
0
16384
32768
49152
65535
CODE
1605 • TA02
BYTE 23
2.2µF
AGND1
2
AGND2
5
DGND
14
1605 • TA01
1605fc
1
