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LTC1416IG#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
1
LTC1416
Low Power 14-Bit, 400ksps
Sampling ADC
Complete, 70mW, 14-Bit ADC with 80.5dB S/(N + D)
BUSY
CS
CONVST
RD
SHDN
14-BIT ADC
14
S/H
BUFFER
4k
LTC1416
•
•
•
D13 (MSB)
D0 (LSB)
–5V
V
SS
A
IN
+
A
IN
–
V
REF
REFCOMP
DV
DD
AV
DD
1µF
22µF
10µF
10µF
AGND
1416 TA01
DGND
2.5V
REFERENCE
TIMING
AND
LOGIC
OUTPUT
BUFFERS
INPUT FREQUENCY (Hz)
1k
EFFECTIVE BITS
SIGNAL/(NOISE + DISTORTION) (dB)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
86
80
74
68
62
10k 100k
1416 TA02
1M 2M
f
SAMPLE
= 400kHz
NYQUIST
FREQUENCY
Effective Bits and
Signal-to-(Noise + Distortion)
vs Input Frequency
■
Sample Rate: 400ksps
■
Power Dissipation: 70mW
■
Guaranteed
±
1.5LSB DNL,
±
2LSB INL (Max)
■
80.5dB S/(N + D) and 93dB THD at 100kHz
■
80dB S/(N + D) and 90dB THD at Nyquist
■
Nap and Sleep Shutdown Modes
■
Operates with Internal or External Reference
■
True Differential Inputs Reject Common Mode Noise
■
15MHz Full Power Bandwidth Sampling
■
±2.5V Bipolar Input Range
■
28-Pin SSOP Package
, LTC and LT are registered trademarks of Linear Technology Corporation.
■
Telecommunications
■
Digital Signal Processing
■
Multiplexed Data Acquisition Systems
■
High Speed Data Acquisition
■
Spectrum Analysis
■
Imaging Systems
The LTC
®
1416 is a 2.2µs, 400ksps, 14-bit sampling A/D
converter that draws only 70mW from ±5V supplies. This
easy-to-use device includes a high dynamic range sample-
and-hold and a precision reference. Two digitally select-
able power shutdown modes provide flexibility for low
power systems.
The LTC1416’s full-scale input range is ±2.5V. Maximum
DC specifications include ±2LSB INL, ±1.5LSB DNL over
temperature. Outstanding AC performance includes 80.5dB
S/(N + D) and 93dB THD with a 100kHz input, and 80dB
S/(N + D) and 90dB THD at the Nyquist input frequency of
200kHz.
The unique differential input sample-and-hold can ac-
quire single-ended or differential input signals up to its
15MHz bandwidth. The 60dB common mode rejection
allows users to eliminate ground loops and common
mode noise by measuring signals differentially from the
source.
The ADC has a µP compatible, 14-bit parallel output
port. There is no pipeline delay in the conversion
results. A separate convert start input and a data ready
signal (BUSY) ease connections to FIFOs, DSPs and
microprocessors.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
2
LTC1416
AV
DD
= DV
DD
= V
DD
(Notes 1, 2)
Supply Voltage (V
DD
)................................................ 6V
Negative Supply Voltage (V
SS
) ............................... –6V
Total Supply Voltage (V
DD
to V
SS
) .......................... 12V
Analog Input Voltage
(Note 3) ......................... (V
SS
– 0.3V) to (V
DD
+ 0.3V)
Digital Input Voltage (Note 4) ..........(V
SS
– 0.3V) to 10V
Digital Output Voltage....... (V
SS
– 0.3V) to (V
DD
+ 0.3V)
Power Dissipation............................................. 500mW
Operating Temperature Range
Commercial ............................................ 0°C to 70°C
Industrial ........................................... –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
LTC1416CG
LTC1416IG
T
JMAX
= 110°C, θ
JA
= 95°C/W
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A
IN
+
A
IN
–
V
REF
REFCOMP
AGND
D13(MSB)
D12
D11
D10
D9
D8
D7
D6
DGND
AV
DD
DV
DD
V
SS
BUSY
CS
CONVST
RD
SHDN
D0
D1
D2
D3
D4
D5
G PACKAGE
28-LEAD PLASTIC SSOP
TOP VIEW
Consult factory for Military grade parts and for A grade parts.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (Note 9) 4.75V ≤ V
DD
≤ 5.25V, –5.25V ≤ V
SS
≤ –4.75V ● ±2.5 V
I
IN
Analog Input Leakage Current CS = High ● ±1 µA
C
IN
Analog Input Capacitance Between Conversions 15 pF
During Conversions 5 pF
t
ACQ
Sample-and-Hold Acquisition Time (Note 9) ● 100 400 ns
t
AP
Sample-and-Hold Aperture Delay Time –1.5 ns
t
jitter
Sample-and-Hold Aperture Delay Time Jitter 2 ps
RMS
CMRR Analog Input Common Mode Rejection Ratio –2.5V < (A
IN
–
= A
IN
+
) < 2.5V 60 dB
The ● denotes specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 5)
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. With Internal Reference (Notes 5, 6)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) ● 13 Bits
Integral Linearity Error (Note 7) ● ±0.8 ±2 LSB
Differential Linearity Error ● ±0.7 ±1.5 LSB
Offset Error (Note 8) ● ±5 ±20 LSB
Full-Scale Error Internal Reference ±20 ±60 LSB
External Reference = 2.5V ±10 ±40 LSB
Full-Scale Tempco I
OUT(REF)
= 0 ±15 ppm/°C
CO VERTER CHARACTERISTICS
U
A ALOG I PUT
UU
3
LTC1416
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
S/(N + D) Signal-to-(Noise + Distortion) Ratio 100kHz Input Signal ● 77 80.5 dB
200kHz Input Signal 80 dB
THD Total Harmonic Distortion 100kHz Input Signal, First 5 Harmonics ● –93 –86 dB
200kHz Input Signal, First 5 Harmonics –90 dB
SFDR Spurious-Free Dynamic Range 100kHz Input Signal ● –95 –86 dB
IMD Intermodulation Distortion f
IN1
= 87.01172kHz, f
IN2
= 113.18359kHz –90 dB
Full Power Bandwidth 15 MHz
Full Linear Bandwidth S/(N + D) ≥ 77dB 0.8 MHz
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 5pF
V
OH
High Level Output Voltage V
DD
= 4.75V
I
OUT
= –10µA 4.5 V
I
OUT
= –200µA ● 4.0 V
V
OL
Low Level Output Voltage V
DD
= 4.75V
I
OUT
= 160µA 0.05 V
I
OUT
= 1.6mA ● 0.10 0.4 V
I
OZ
Hi-Z Output Leakage D13 to D0 V
OUT
= 0V to V
DD
, CS High ● ±10 µA
C
OZ
Hi-Z Output Capacitance D13 to D0 CS 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
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 ±15 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 4 kΩ
COMP Output Voltage I
OUT
= 0 4.06 V
The ● denotes specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
DIGITAL I PUTS A D DIGITAL OUTPUTS
UU
DY A IC ACCURACY
U
W
The ● denotes specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
I TER AL REFERE CE CHARACTERISTICS
UU U
The ● denotes specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
Positive Supply Voltage (Note 10) 4.75 5.25 V
V
SS
Negative Supply Voltage (Note 10) –4.75 –5.25 V
I
DD
Positive Supply Current ● 710 mA
Nap Mode SHDN = 0V, CS = 0V 1 1.6 mA
Sleep Mode SHDN = 0V, CS = 5V 1 µA
POWER REQUIRE E TS
WU
The ● denotes specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC1416IG#PBF

Mfr. #:
Buy LTC1416IG#PBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 400ksps 14-Bit Parallel ADC
Lifecycle:
New from this manufacturer.
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