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LTC1419IG#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
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LTC1419
1419fb
14-Bit, 800ksps Sampling
A/D Converter with Shutdown
■
Sample Rate: 800ksps
■
Power Dissipation: 150mW
■
81.5dB S/(N + D) and 93dB THD
■
No Missing Codes
■
No Pipeline Delay
■
Nap and Sleep Shutdown Modes
■
Operates with 2.5V Internal 15ppm/°C
Reference or External Reference
■
True Differential Inputs Reject Common Mode Noise
■
20MHz Full-Power Bandwidth Sampling
■
Bipolar Input Range: ±2.5V
■
28-Pin SSOP and SO Packages
The LTC
®
1419 is a 1µs, 800ksps, 14-bit sampling
A/D converter that draws only 150mW from ±5V supplies.
This easy-to-use device includes a high dynamic range
sample-and-hold and a precision reference. Two digitally
selectable power shutdown modes provide flexibility for
low power systems.
The LTC1419 has a full-scale input range of ±2.5V. Out-
standing AC performance includes 81.5dB S/(N + D) and
93dB THD with a 100kHz input; 80dB S/(N + D) and 86dB
THD at the Nyquist input frequency of 400kHz.
The unique differential input sample-and-hold can acquire
single-ended or differential input signals up to its 20MHz
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 data ready signal (BUSY)
ease connections to FIFOs, DSPs and microprocessors.
■
Telecommunications
■
Digital Signal Processing
■
Multiplexed Data Acquisition Systems
■
High Speed Data Acquisition
■
Spectrum Analysis
■
Imaging Systems
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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
LTC1419
1µF
10µF
DIFFERENTIAL
ANALOG INPUT
(–2.5V TO 2.5V)
V
REF
OUTPUT
2.50V
10µF
10µF
5V
–5V
14-BIT
PARALLEL
BUS
µP CONTROL
LINES
1419 TA01
800kHz, 14-Bit Sampling A/D Converter
INPUT FREQUENCY (Hz)
1k
EFFECTIVE BITS
SIGNAL/(NOISE + DISTORTION) (dB)
14
13
12
11
10
9
8
7
6
5
4
3
2
86
80
74
68
62
10k 100k
1419 TA02
1M 2M
f
SAMPLE
= 800kHz
Effective Bits and Signal-to-(Noise + Distortion)
vs Input Frequency
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents
including 5581252.
2
LTC1419
1419fb
AV
DD
= V
DD
= DV
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
LTC1419C .............................................. 0°C to 70°C
LTC1419I........................................... – 40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
ORDER
PART NUMBER
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)
Consult factory for Military grade parts.
T
JMAX
= 125°C, θ
JA
= 95°C/W (G)
T
JMAX
= 125°C, θ
JA
= 130°C/W (SW)
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
SW PACKAGE
28-LEAD PLASTIC SO
G PACKAGE
28-LEAD PLASTIC SSOP
TOP VIEW
LTC1419ACG
LTC1419ACSW
LTC1419AIG
LTC1419AISW
LTC1419CG
LTC1419CSW
LTC1419IG
LTC1419ISW
LTC1419 LTC1419A
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Resolution (No Missing Codes) ● 13 14 Bits
Integral Linearity Error (Note 7) ● ±0.8 ±2 ±0.6 ±1.25 LSB
Differential Linearity Error ● ±0.7 ±1.5 ±0.5 ±1 LSB
Offset Error (Note 8) ● ±5 ±20 ±5 ±20 LSB
Full-Scale Error Internal Reference ±10 ±60 ±10 ±60 LSB
External Reference = 2.5V ±5 ±5 LSB
Full-Scale Tempco I
OUT(REF)
= 0 ±15 ±15 ppm/°C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (Note 9) 4.75V ≤ V
DD
≤ 5.25V, –5.25 ≤ 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 ● 90 300 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
CO VERTER CHARACTERISTICS
U
The ● denotes specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 5)
A ALOG I PUT
UU
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
3
LTC1419
1419fb
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 ● 11 20 mA
Nap Mode SHDN = 0V, CS = 0V 1.5 mA
Sleep Mode SHDN = 0V, CS = 5V 250 µA
I
SS
Negative Supply Current ● 19 30 mA
Nap Mode SHDN = 0V, CS = 0V 100 µA
Sleep Mode SHDN = 0V, CS = 5V 1 µA
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
S/(N + D) Signal-to-(Noise + Distortion) Ratio 100kHz Input Signal ● 78 81.5 dB
390kHz Input Signal 80.0 dB
THD Total Harmonic Distortion 100kHz Input Signal, First 5 Harmonics ● –93 –86 dB
390kHz Input Signal, First 5 Harmonics – 86 dB
SFDR Spurious Free Dynamic Range 100kHz Input Signal ● –95 –86 dB
IMD Intermodulation Distortion f
IN1
= 29.37kHz, f
IN2
= 32.446kHz – 86 dB
Full-Power Bandwidth 20 MHz
Full-Linear Bandwidth S/(N + D) ≥ 77dB 1 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 ±15 ppm/°C
V
REF
Line Regulation 4.75V ≤ V
DD
≤ 5.25V, –5.25 ≤ V
SS
≤ –4.75V 0.05 LSB/V
V
REF
Output Resistance –0.1mA ≤ ⏐I
OUT
⏐ ≤ 0.1mA 2 kΩ
REFCOMP Output Voltage I
OUT
= 0 4.06 V
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
O
= –10µA 4.5 V
I
O
= – 200µA ● 4.0 V
V
OL
Low Level Output Voltage V
DD
= 4.75V
I
O
= 160µA 0.05 V
I
O
= 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
The ● denotes specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
DY A IC ACCURACY
U
W
(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)
DIGITAL I PUTS A D DIGITAL OUTPUTS
UU
The ● denotes specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
POWER REQUIRE E TS
WU
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LTC1419IG#PBF

Mfr. #:
Buy LTC1419IG#PBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 800ksps 14-Bit Parallel ADC
Lifecycle:
New from this manufacturer.
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