
1
LTC1417
sn1417 1417fas
Low Power 14-Bit, 400ksps
Sampling ADC Converter
with Serial I/O
A 400kHz, 14-Bit Sampling A/D Converter in a Narrow 16-Lead SSOP Package
Effective Bits and Signal-to-(Noise + Distortion)
vs Input Frequency
The LTC
1417 is a low power, 400ksps, 14-bit A/D con-
verter. This versatile device can operate from a single 5V or
±5V supplies. An onboard high performance sample-and-
hold, a precision reference and internal trimming minimize
external circuitry requirements. The low 20mW power
dissipation is made even more attractive with two user-
selectable power shutdown modes.
The LTC1417 converts 0V to 4.096V unipolar inputs when
using a 5V supply and
±2.048V bipolar inputs when using
±5V supplies. DC specs include ±1.25LSB INL, ±1LSB
DNL and no missing codes over temperature. Outstanding
AC performance includes 81dB S/(N + D) and – 95dB THD
at a Nyquist input frequency of 200kHz.
The internal clock is trimmed for 2
s maximum conver-
sion time. A separate convert start input and a data ready
signal (BUSY) ease connections to FIFOs, DSPs and
microprocessors.
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16-Pin Narrow SSOP Package (SO-8 Footprint)
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Sample Rate: 400ksps
s
±1.25LSB INL and ±1LSB DNL Max
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Power Dissipation: 20mW (Typ)
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Single Supply 5V or
±5V Operation
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Serial Data Output
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No Missing Codes Over Temperature
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Power Shutdown: Nap and Sleep
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External or Internal Reference
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Differential High Impedance Analog Input
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Input Range: 0V to 4.096V or
±2.048V
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81dB S/(N + D) and – 95dB THD at Nyquist
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High Speed Data Acquisition
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Digital Signal Processing
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Isolated Data Acquisition Systems
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Audio and Telecom Processing
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Spectrum Instrumentation
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
S/H
14
BUFFER
8k
10
F
10
F
REFCOMP
AIN
–
AIN
+
VREF
4.096V
5V
LTC1417
14-BIT ADC
SERIAL
PORT
DGND
10
15
5
3
4
2
1
1417 TA01
VSS
(0V OR – 5V)
AGND
EXTCLKIN
SCLK
CLKOUT
DOUT
VDD
16
TIMING AND
LOGIC
2.5V
REFERENCE
BUSY
RD
CONVST
SHDN
1
F
6
7
8
9
14
12
13
11
EQUIVALE T BLOCK DIAGRA
W
U
INPUT FREQUENCY (Hz)
4
EFFECTIVE
BITS
S/(N
+
D)
(dB)
6
8
10
12
10k
100k
1M
1417 TA02
2
1k
14
86
80
74
68
62