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LTC1603CG#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
1603f
1
LTC1603
High Speed, 16-Bit, 250ksps
Sampling A/D Converter
with Shutdown
The LTC
®
1603 is a 250ksps, 16-bit sampling A/D con-
verter that draws only 220mW from ±5V supplies. This
high performance device includes a high dynamic range
sample-and-hold, a precision reference and a high speed
parallel output. Two digitally selectable power shutdown
modes provide power savings for low power systems.
The LTC1603’s full-scale input range is ±2.5V. Outstand-
ing AC performance includes 90dB S/(N+D) and –100dB
THD at a sample rate of 250ksps.
The unique differential input sample-and-hold can acquire
single-ended or differential input signals up to its 15MHz
bandwidth. The 68dB common mode rejection allows
users to eliminate ground loops and common mode noise
by measuring signals differentially from the source.
The ADC has µP compatible,16-bit parallel output port.
There is no pipeline delay in conversion results. A separate
convert start input and a data ready signal (BUSY) ease
connections to FlFOs, DSPs and microprocessors.
■
A Complete, 250ksps 16-Bit ADC
■
90dB S/(N+D) and –100dB THD (Typ)
■
Power Dissipation: 220mW (Typ)
■
Nap (7mW) and Sleep (10
µ
W) Shutdown Modes
■
No Pipeline Delay
■
No Missing Codes over Temperature
■
Operates with Internal 15ppm/°C Reference
or External Reference
■
True Differential Inputs Reject Common Mode Noise
■
5MHz Full Power Bandwidth
■
±2.5V Bipolar Input Range
■
Pin Compatible with LTC1604 and LTC1608
■
36-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
2.2µF
10µF
10µF
10Ω
47µF
4
6
DIFFERENTIAL
ANALOG INPUT
±2.5V
REFCOMP
4.375V
CONTROL
LOGIC
AND
TIMING
B15 TO B0
16-BIT
SAMPLING
ADC
–
+
10µF
5V OR
3V
µP
CONTROL
LINES
D15 TO D0
OUTPUT
BUFFERS
16-BIT
PARALLEL
BUS
11 TO 26
1603 TA01
OGND
OV
DD
28
29
1
2
A
IN
+
A
IN
–
SHDN
CS
CONVST
RD
BUSY
33
32
31
30
27
7.5k
3
36
35
10
9
5V
5V
AV
DD
AV
DD
DV
DD
DGND
V
REF
8
AGND
AGND
7
AGND
5
AGND
34
–5V
V
SS
10µF
2.5V
REF
10µF
1.75X
+
+
+ +
+
+
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
2
LTC1603
1603f
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
ORDER
PART NUMBER
AV
DD
= DV
DD
= OV
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)
V
REF
Voltage (Note 4) ................. –0.3V to (V
DD
+ 0.3V)
REFCOMP Voltage (Note 4) .........–0.3V to (V
DD
+ 0.3V)
Digital Input Voltage (Note 4) ....................–0.3V to 10V
Digital Output Voltage.................. –0.3V to (V
DD
+ 0.3V)
Power Dissipation............................................. 500mW
Operating Temperature Range
LTC1603C .............................................. 0°C to 70°C
LTC1603I............................................ –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
T
JMAX
= 125°C, θ
JA
= 95°C/W
CCHARA TERIST
ICS
CO
U
VERTER
The ● denotes the 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) ● 16 16 Bits
Integral Linearity Error (Note 7) ● ±1 ±3 LSB
Transition Noise (Note 8) 0.7 LSB
Offset Error (Note 9) ● ±0.05 ±0.125 %
Offset Tempco (Note 9) 0.5 ppm/°C
Full-Scale Error Internal Reference ±0.125 ±0.25 %
External Reference ±0.25 %
Full-Scale Tempco I
OUT
(Reference) = 0, Internal Reference ±15 ppm/°C
LTC1603CG
LTC1603IG
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (Note 2) 4.75 ≤ V
DD
≤ 5.25V, –5.25 ≤ V
SS
≤ –4.75V, ±2.5 V
V
SS
≤ (A
IN
–
, A
IN
+
) ≤ AV
DD
I
IN
Analog Input Leakage Current CS = High ● ±1 µA
C
IN
Analog Input Capacitance Between Conversions 43 pF
During Conversions 5 pF
t
ACQ
Sample-and-Hold Acquisition Time 380 ns
t
AP
Sample-and-Hold Acquisition Delay Time –1.5 ns
t
jitter
Sample-and-Hold Acquisition Delay Time Jitter 5 ps
RMS
CMRR Analog Input Common Mode Rejection Ratio –2.5V < (A
IN
–
= A
IN
+
) < 2.5V 68 dB
PUT
U
IA
A
U
LOG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
TOP VIEW
G PACKAGE
36-LEAD PLASTIC SSOP
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
AV
DD
AV
DD
V
SS
SHDN
CS
CONV
RD
OV
DD
OGND
BUSY
D0
D1
D2
D3
D4
D5
D6
D7
A
IN
+
A
IN
–
V
REF
REFCOMP
AGND
AGND
AGND
AGND
DV
DD
DGND
D15 (MSB)
D14
D13
D12
D11
D10
D9
D8
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The ● denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C.
1603f
3
LTC1603
DY A IC ACCURACY
UW
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
S/N Signal-to-Noise Ratio 5kHz Input Signal ● 87 90 dB
100kHz Input Signal 90 dB
S/(N + D) Signal-to-(Noise + Distortion) Ratio 5kHz Input Signal 90 dB
100kHz Input Signal (Note 10)
● 84 89 dB
THD Total Harmonic Distortion 5kHz Input Signal –100 dB
Up to 5th Harmonic 100kHz Input Signal
● –94 –88 dB
SFDR Spurious Free Dynamic Range 100kHz Input Signal 96 dB
IMD Intermodulation Distortion f
IN1
= 29.37kHz, f
IN2
= 32.446kHz –88 dB
Full Power Bandwidth 5 MHz
Full Linear Bandwidth (S/(N + D) ≥ 84dB 350 kHz
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 2.475 2.500 2.515 V
V
REF
Output Tempco I
OUT
= 0 ±15 ppm/°C
V
REF
Line Regulation 4.75 ≤ V
DD
≤ 5.25V 0.01 LSB/V
–5.25V ≤ V
SS
≤ –4.75V 0.01 LSB/V
V
REF
Output Resistance 0 ≤ I
OUT
≤ 1mA 7.5 kΩ
REFCOMP Output Voltage I
OUT
= 0 4.375 V
I TER AL REFERE CE CHARACTERISTICS
UU U
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
V
DD
= 4.75V, I
OUT
= –400µA ● 4.0 V
V
OL
Low Level Output Voltage V
DD
= 4.75V, I
OUT
= 160µA 0.05 V
V
DD
= 4.75V, I
OUT
= 1.6mA ● 0.10 0.4 V
I
OZ
Hi-Z Output Leakage D15 to D0 V
OUT
= 0V to V
DD
, CS High ● ±10 µA
C
OZ
Hi-Z Output Capacitance D15 to D0 CS High (Note 11) ● 15 pF
I
SOURCE
Output Source Current V
OUT
= 0V –10 mA
I
SINK
Output Sink Current V
OUT
= V
DD
10 mA
DIGITAL I PUTS A D DIGITAL OUTPUTS
UU
The ● denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
(Note 5)
The ● denotes the 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

LTC1603CG#PBF

Mfr. #:
Buy LTC1603CG#PBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 16-B, 250ksps Smpl A/D Conv w/
Lifecycle:
New from this manufacturer.
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