LTC1605-1/LTC1605-2
Single Supply 16-Bit, 100ksps,
Sampling ADCs
Features
Description
Sample Rate: 100ksps
nn Complete 16-Bit Solution on a Single 5V Supply
nn Unipolar Input Range: 0V to 4V (LTC1605-1)
nn Bipolar Input Range: ±4V (LTC1605-2)
nn Power Dissipation: 55mW Typ
nn Signal-to-Noise Ratio: 86dB Typ
nn Operates with Internal or External Reference
nn Internal Synchronized Clock
nn 28-Pin SSOP Package
The LTC ®1605-1/LTC1605-2 are 100ksps, sampling
16-bit A/D converters that draw only 55mW (typical) from
a single 5V supply. These easy-to-use devices include a
sample-and-hold, precision reference, switched capacitor
successive approximation A/D and trimmed internal clock.
Applications
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.
nn
The LTC1605-1’s input range is 0V to 4V while the
LTC1605-2’s input range is ±4V. An external reference
can be used if greater accuracy over temperature is
needed.
Industrial Process Control
Multiplexed Data Acquisition Systems
nn High Speed Data Acquisition for PCs
nn Digital Signal Processing
nn
nn
L, LTC and LT are registered trademarks of Linear Technology Corporation.
Typical Application
LTC1605-1 Low Power, 100kHz, 16-Bit Sampling ADC on 5V Supply
5V
10μF
28
0.1μF
Typical INL Curve
27
2.0
VDIG VANA
1 VIN
4k
16-BIT
SAMPLING ADC
33.2k
2.5V
20k
2.5V
BUSY 26
BUFFER
3 REF
D15 TO D0
1.5
16-BIT
OR 2 BYTE
PARALLEL
BUS
10k
4 CAP
2.2μF
6 TO 13
15 TO 22
CONTROL
LOGIC AND
TIMING
2.5V
REFERENCE
4k
2
AGND2
5
R/C 24
DIGITAL
CONTROL
SIGNALS
BYTE 23
2.2μF
AGND1
CS 25
DGND
14
1.0
INL (LSBs)
0V TO 4V 200Ω
INPUT
0.5
0
–0.5
–1.0
–1.5
–2.0
0
16384
32768
49152
65535
CODE
1605-1/2 TA01
1605-1/2 TA02/G04
160512fa
For more information www.linear.com/LTC1605-1
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