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LTC1417IGN#TRPBF

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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 2µs maximum conver-
sion time. A separate convert start input and a data ready
signal (BUSY) ease connections to FIFOs, DSPs and
microprocessors.
■
16-Pin Narrow SSOP Package (SO-8 Footprint)
■
Sample Rate: 400ksps
■
±1.25LSB INL and ±1LSB DNL Max
■
Power Dissipation: 20mW (Typ)
■
Single Supply 5V or ±5V Operation
■
Serial Data Output
■
No Missing Codes Over Temperature
■
Power Shutdown: Nap and Sleep
■
External or Internal Reference
■
Differential High Impedance Analog Input
■
Input Range: 0V to 4.096V or ±2.048V
■
81dB S/(N + D) and –95dB THD at Nyquist
■
High Speed Data Acquisition
■
Digital Signal Processing
■
Isolated Data Acquisition Systems
■
Audio and Telecom Processing
■
Spectrum Instrumentation
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
S/H
14
BUFFER
8k
10µF
10µF
REFCOMP
A
IN
–
A
IN
+
V
REF
4.096V
5V
LTC1417
14-BIT ADC
SERIAL
PORT
DGND10155
3
4
2
1
1417 TA01
V
SS
(0V OR –5V)
AGND
EXTCLKIN
SCLK
CLKOUT
D
OUT
V
DD
16
TIMING AND
LOGIC
2.5V
REFERENCE
BUSY
RD
CONVST
SHDN
1µF
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
2
LTC1417
sn1417 1417fas
(Notes 1, 2)
Positive Supply Voltage (V
DD
) .................................. 6V
Negative Supply Voltage (V
SS
)
Bipolar Operation Only .......................... –6V to GND
Total Supply Voltage (V
DD
to V
SS
)
Bipolar Operation Only ....................................... 12V
Analog Input Voltage (Note 3)
Unipolar Operation .................. –0.3V to (V
DD
+ 0.3V)
Bipolar Operation............ (V
SS
– 0.3) to (V
DD
+ 0.3V)
Digital Input Voltage (Note 4)
Unipolar Operation ............................... –0.3V to 10V
Bipolar Operation.........................(V
SS
– 0.3V) to 10V
Digital Output Voltage
Unipolar Operation ................... –0.3 to (V
DD
+ 0.3V)
Bipolar Operation........... (V
SS
– 0.3V) to (V
DD
+ 0.3V)
Power Dissipation............................................. 500mW
Operating Temperature Range
LTC1417AC/LTC1417C........................... 0°C to 70°C
LTC1417AI/LTC1417I ......................... –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
WU
U
PACKAGE
/
O
RDER I FOR ATIO
ORDER
PART NUMBER
T
JMAX
= 110°C, θ
JA
= 95°C/W
LTC1417 LTC1417A
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Resolution ● 14 14 Bits
No Missing Codes ● 13 14 Bits
Integral Linearity Error (Note 7) ● ±0.8 ±2 ±0.5 ±1.25 LSB
Differential Linearity Error ● ±0.7 ±1.5 ±0.35 ±1 LSB
Transition Noise (Note 12) 0.33 0.33 LSB
RMS
Offset Error External Reference (Note 8) ● ±5 ±20 ±2 ±10 LSB
Full-Scale Error Internal Reference ±15 ±60 ±15 ±60 LSB
External Reference = 2.5V ±5 ±30 ±5 ±15 LSB
Full-Scale Tempco I
OUT(REF)
= 0, Internal Reference, 0°C ≤ T
A
≤ 70°C ±15 ±10 ppm/°C
I
OUT(REF)
= 0, Internal Reference, –40°C ≤ T
A
≤ 85°C ±20 ppm/°C
I
OUT(REF)
= 0, External Reference ±5 ±1 ppm/°C
CCHARA TERIST
ICS
CO
U
VERTER
LTC1417ACGN
LTC1417CGN
LTC1417AIGN
LTC1417IGN
GN PART MARKING
1417A
1417
1417AI
1417I
GN PACKAGE
16-LEAD (NARROW) PLASTIC SSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
A
IN
+
A
IN
–
V
REF
REFCOMP
AGND
EXTCLKIN
SCLK
CLKOUT
V
DD
V
SS
BUSY
CONVST
RD
SHDN
DGND
D
OUT
The ● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. Specifications are measured while using the internal reference unless
otherwise noted. (Notes 5, 6)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (Note 9) 4.75V ≤ V
DD
≤ 5.25V (Unipolar) ● 0 to 4.096 V
4.75V ≤ V
DD
≤ 5.25V, –5.25V ≤ V
SS
≤ –4.75V (Bipolar) ● ±2.048 V
I
IN
Analog Input Leakage Current CONVST = High ● ±1 µA
The ● indicates specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
A ALOG I PUT
UU
Consult LTC Marketing for parts specified with wider operating temperature ranges.
3
LTC1417
sn1417 1417fas
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
C
IN
Analog Input Capacitance Between Conversions (Sample Mode) 14 pF
During Conversions (Hold Mode) 3 pF
t
ACQ
Sample-and-Hold Acquisition Time ● 150 500 ns
t
AP
Sample-and-Hold Aperture Time –1.5 ns
t
jitter
Sample-and-Hold Aperture Time Jitter 5 ps
RMS
CMRR Analog Input Common Mode Rejection Ratio 0V < (A
IN
+
= A
IN
–
) < 4.096V (Unipolar) 65 dB
–2.048V < (A
IN
+
= A
IN
–
) < 2.048V (Bipolar) 65 dB
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
S/(N + D) Signal-to-(Noise + Distortion) Ratio 100kHz Input Signal 79 81 dB
THD Total Harmonic Distortion 100kHz Input Signal, First Five Harmonics –85 –95 dB
SFDR Spurious Free Dynamic Range 200kHz Input Signal –98 dB
IMD Intermodulation Distortion f
IN1
= 97.3kHz, f
IN2
= 104.6kHz –97 dB
Full Power Bandwidth 10 MHz
Full Linear Bandwidth S/(N + D) ≥ 77dB 0.8 MHz
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 ● 2.480 2.500 2.520 V
V
REF
Output Tempco I
OUT
= 0, 0°C ≤ T
A
≤ 70°C ±10 ppm/°C
I
OUT
= 0, –40°C ≤ T
A
≤ 85°C ±20 ppm/°C
V
REF
Line Regulation 4.75V ≤ V
DD
≤ 5.25V 0.05 LSB/V
–5.25V ≤ V
SS
≤ –4.75V 0.05 LSB/V
V
REF
Output Resistance 0.1mA ≤ |I
OUT
| ≤ 0.1mA 8 kΩ
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
DD
= 5.25V ● 2.4 V
V
IL
Low Level Input Voltage V
DD
= 4.75V ● 0.8 V
I
IN
Digital Input Current V
IN
= 0V to V
DD
● ±10 µA
C
IN
Digital Input Capacitance 1.4 pF
V
OH
High Level Output Voltage V
DD
= 4.75V, I
O
= –10µA 4.74 V
V
DD
= 4.75V, I
O
= –200µA ● 4.0 V
V
OL
Low Level Output Voltage V
DD
= 4.75V, I
O
= 160µA 0.05 V
V
DD
= 4.75V, I
O
= –1.6mA ● 0.10 0.4 V
I
OZ
High-Z Output Leakage D
OUT
, CLKOUT V
OUT
= 0V to V
DD
, RD High ● ±10 µA
C
OZ
High-Z Output Capacitance D
OUT
, CLKOUT RD High (Note 9) ● 15 pF
I
SOURCE
Output Source Current V
OUT
= 0V –10 mA
I
SINK
Output Sink Current V
OUT
= V
DD
10 mA
The ● indicates specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
A ALOG I PUT
UU
The ● indicates specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
DY A IC ACCURACY
UW
I TER AL REFERE CE CHARACTERISTICS
UU U
DIGITAL I PUTS A D DIGITAL OUTPUTS
UU
The ● indicates specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
The ● indicates specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
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LTC1417IGN#TRPBF

Mfr. #:
Buy LTC1417IGN#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC L Pwr 14-B, 400ksps Smpl ADC Conv w/ Ser
Lifecycle:
New from this manufacturer.
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