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LTC1410CSW#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
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LTC1410
12-Bit, 1.25Msps Sampling
A/D Converter with Shutdown
S
F
EA
T
U
RE
D
U
ESCRIPTIO
The LTC
®
1410 is a 0.65µs, 1.25Msps, 12-bit sampling
A/D converter that draws only 160mW from ±5V supplies.
This easy-to-use device includes a high dynamic range
sample-and-hold, a precision reference and requires no
external components. Two digitally selectable power shut-
down modes provide flexibility for low power systems.
The LTC1410’s full-scale input range is ±2.5V. Maximum
DC specifications include ±1LSB INL and ±1LSB DNL over
temperature. Outstanding AC performance includes 71dB
S/(N + D) and 82dB THD at the Nyquist input frequency of
625kHz.
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, 12-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.
■
1.25Msps Sample Rate
■
Power Dissipation: 160mW
■
71dB S/(N + D) and 82dB THD at Nyquist
■
No Pipeline Delay
■
Nap (7mW) and Sleep (10µW) Shutdown Modes
■
Operates with Internal 15ppm/°C Reference
or External Reference
■
True Differential Inputs Reject Common Mode Noise
■
20MHz Full Power Bandwidth Sampling
■
±2.5V Bipolar Input Range
■
28-Pin SO Wide Package
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S
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O
PP
L
IC
AT
I
■
Telecommunications
■
Digital Signal Processing
■
Multiplexed Data Acquisition Systems
■
High Speed Data Acquisition
■
Spectrum Analysis
■
Imaging Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
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A
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PP
L
IC
AT
ITY
P
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CA
L
Complete 1.25MHz, 12-Bit Sampling A/D Converter
Effective Bits and Signal-to-(Noise + Distortion)
vs Input Frequency
INPUT FREQUENCY (Hz)
2
EFFECTIVE BITS
S/(N + D) (dB)
4
6
8
10
10k 100k 1M 10M
LTC1410 • TA02
0
1k
12 74
68
62
56
50
f
SAMPLE
= 1.25MHz
NYQUIST
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
LTC1410
0.1µF
+
10µF
DIFFERENTIAL
ANALOG INPUT
(–2.5V TO 2.5V)
2.50V
V
REF
OUTPUT
10µF
10µF
0.1µF
0.1µF
–5V
5V
12-BIT
PARALLEL
BUS
µP CONTROL
LINES
1410 TA01
+
+A
IN
–A
IN
V
REF
REFCOMP
AGND
D11(MSB)
D10
D9
D8
D7
D6
D5
D4
DGND
AV
DD
DV
DD
V
SS
BUSY
CS
CONVST
RD
SHDN
NAP/SLP
OGND
D0
D1
D2
D3
2
LTC1410
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...................
– 0.3V to V
DD
+ 0.3V
Power Dissipation............................................. 500mW
Operating Temperature Range
LTC1410C .............................................. 0°C to 70°C
LTC1410I........................................... –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
A
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W
A
W
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W
ARB
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T
EXI T
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WU
U
PACKAGE
/
O
RDER I FOR ATIO
ORDER
PART NUMBER
Consult factory for Military grade parts.
PUT
U
IA
A
U
LOG
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) ● 12 Bits
Integral Linearity Error (Note 7) ● ±0.3 ±1 LSB
Differential Linearity Error ● ±0.3 ±1 LSB
Offset Error (Note 8) ±2 ±6 LSB
● ±8 LSB
Full-Scale Error ±15 LSB
Full-Scale Tempco I
OUT(REF)
= 0 ● ±15 ppm/°C
T
JMAX
= 110°C, θ
JA
= 90°C/W (SW)
T
JMAX
= 110°C, θ
JA
= 95°C/W (G)
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
D11(MSB)
D10
D9
D8
D7
D6
D5
D4
DGND
AV
DD
DV
DD
V
SS
BUSY
CS
CONVST
RD
SHDN
NAP/SLP
OGND
D0
D1
D2
D3
G PACKAGE
28-LEAD PLASTIC SSOP
SW PACKAGE
28-LEAD PLASTIC SO WIDE
TOP VIEW
LTC1410CG
LTC1410CSW
LTC1410IG
LTC1410ISW
CCHARA TERIST
ICS
CO
U
VERTER
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)
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
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 17 pF
During Conversions 5 pF
t
ACQ
Sample-and-Hold Acquisition Time ● 50 100 ns
t
AP
Sample-and-Hold Aperture Delay Time –1.5 ns
t
jitter
Sample-and-Hold Aperture Delay Time Jitter 5 ps
RMS
CMRR Analog Input Common Mode Rejection Ratio –2.5V < (–A
IN
= A
IN
) < 2.5V 60 dB
3
LTC1410
ACCURACY
IC
DY
U
W
A
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
S/(N + D) Signal-to-(Noise + Distortion) Ratio 100kHz Input Signal (Note 12) ● 70 72.5 dB
600kHz Input Signal (Note 12)
● 68 71.0 dB
THD Total Harmonic Distortion 100kHz Input Signal, First 5 Harmonics –85 dB
600kHz Input Signal, First 5 Harmonics
● –82 –74 dB
Peak Harmonic or Spurious Noise 600kHz Input Signal ● –84 –74 dB
IMD Intermodulation Distortion f
IN1
= 29.37kHz, f
IN2
= 32.446kHz –84 dB
Full Power Bandwidth 20 MHz
Full Linear Bandwidth (S/(N + D) ≥ 68dB) 2.5 MHz
DIGITAL I PUTS A D DIGITAL OUTPUTS
U
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
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
High-Z Output Leakage D11 to D0 V
OUT
= 0V to V
DD
, CS High ● ±10 µA
C
OZ
High-Z Output Capacitance D11 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
I TER AL REFERE CE CHARACTERISTICS
U
UU
The ● denotes specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
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 0.01 LSB/V
–5.25V ≤ V
SS
≤ –4.75V 0.01 LSB/V
V
REF
Output Resistance I
OUT
≤ 0.1mA 2 kΩ
COMP Output Voltage I
OUT
= 0 4.06 V
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
Positive Supply Voltage (Notes 10, 11) 4.75 5.25 V
V
SS
Negative Supply Voltage (Note 10) –4.75 –5.25 V
I
DD
Positive Supply Current CS = RD = CONVST = 5V ● 12 16 mA
Nap Mode SHDN = 0V, NAP/SLP = 5V 1.5 2.3 mA
Sleep Mode SHDN = 0V, NAP/SLP = 0V 1 100 µA
I
SS
Negative Supply Current CS = RD = CONVST = 5V ● 20 30 mA
Nap Mode SHDN = 0V, NAP/SLP = 5V 10 200 µA
Sleep Mode SHDN = 0V, NAP/SLP = 0V 1 100 µA
POWER REQUIRE E TS
W
U
The ● denotes specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
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LTC1410CSW#PBF

Mfr. #:
Buy LTC1410CSW#PBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 12-B, 1.25Msps, Smpl A/D Conv w/ SD
Lifecycle:
New from this manufacturer.
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