LTC1605-1/LTC1605-2
Single Supply 16-Bit, 100ksps,
Sampling ADCs
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FEATURES
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DESCRIPTIO
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.
Sample Rate: 100ksps
Complete 16-Bit Solution on a Single 5V Supply
Unipolar Input Range: 0V to 4V (LTC1605-1)
Bipolar Input Range: ±4V (LTC1605-2)
Power Dissipation: 55mW Typ
Signal-to-Noise Ratio: 86dB Typ
Operates with Internal or External Reference
Internal Synchronized Clock
28-Pin 0.3" PDIP and SSOP Packages
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.
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.
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TYPICAL APPLICATIO
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
6 TO 13
15 TO 22
4k
16-BIT
SAMPLING ADC
33.2k
2.5V
20k
D15 TO D0
16-BIT
OR 2 BYTE
PARALLEL
BUS
10k
4 CAP
BUSY 26
2.2µF
BUFFER
2.5V
3 REF
CONTROL
LOGIC AND
TIMING
2.5V
REFERENCE
4k
CS 25
R/C 24
BYTE 23
2.2µF
DIGITAL
CONTROL
SIGNALS
1.5
1.0
INL (LSBs)
0V TO 4V 200Ω
INPUT
0.5
0
–0.5
–1.0
–1.5
–2.0
0
AGND1
2
AGND2
5
DGND
14
16384
32768
49152
65535
CODE
1605-1/2 TA01
1605-1/2 TA02/G04
1
