LTC1603IG#PBF Linear Technology, LTC1603IG#PBF Datasheet

IC ADC W/SHUTDOWN 16BIT 36-SSOP

LTC1603IG#PBF

Manufacturer Part Number
LTC1603IG#PBF
Description
IC ADC W/SHUTDOWN 16BIT 36-SSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1603IG#PBF

Number Of Bits
16
Sampling Rate (per Second)
250k
Data Interface
Parallel
Number Of Converters
1
Power Dissipation (max)
350mW
Voltage Supply Source
Analog and Digital, Dual ±
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
36-SSOP (0.200", 5.30mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Part Number
Manufacturer
Quantity
Price
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Part Number:
LTC1603IG#PBFLTC1603IG
Manufacturer:
LT
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Part Number:
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Manufacturer:
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Part Number:
LTC1603IG#PBF
Manufacturer:
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FEATURES
TYPICAL APPLICATIO
APPLICATIO S
A Complete, 250ksps 16-Bit ADC
90dB S/(N+D) and –100dB THD (Typ)
Power Dissipation: 220mW (Typ)
Nap (7mW) and Sleep (10 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
Pin Compatible with LTC1604 and LTC1608
36-Pin SSOP Package
Telecommunications
Digital Signal Processing
Multiplexed Data Acquisition Systems
High Speed Data Acquisition
Spectrum Analysis
Imaging Systems
2.5V Bipolar Input Range
U
ANALOG INPUT
DIFFERENTIAL
47 F
2.5V
+
4
2
U
1
REFCOMP
A
A
IN
IN
+
3
V
2.2 F
4.375V
REF
+
AGND
SAMPLING
1.75X
5
16-BIT
10 F
ADC
AGND
+
AV
DD
6
36
10
AGND
7.5k
AV
7
B15 TO B0
5V
DD
35
+
2.5V
REF
10 F
AGND
High Speed, 16-Bit, 250ksps
DESCRIPTIO
The LTC
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 P 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.
8
–5V
V
, LTC and LT are registered trademarks of Linear Technology Corporation.
SS
34
Sampling A/D Converter
5V
BUFFERS
CONTROL
OUTPUT
DV
9
TIMING
LOGIC
+
+
AND
DD
10 F
10 F
®
1603 is a 250ksps, 16-bit sampling A/D con-
10
DGND
D15 TO D0
CONVST
OGND
SHDN
BUSY
OV
RD
CS
DD
U
11 TO 26
33
32
31
30
27
1603 TA01
29
28
16-BIT
PARALLEL
BUS
with Shutdown
+
CONTROL
LINES
P
10 F
5V OR
3V
LTC1603
1
1603f

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LTC1603IG#PBF Summary of contents

Page 1

... The ADC has P 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. , LTC and LT are registered trademarks of Linear Technology Corporation 2 ...

Page 2

LTC1603 ABSOLUTE MAXIMUM (Notes Supply Voltage (V ) ................................................ 6V DD Negative Supply Voltage (V ) ............................... – Total Supply Voltage (V ...

Page 3

ACCURACY otherwise specifications are (Note 5) A SYMBOL PARAMETER S/N Signal-to-Noise Ratio S/( Signal-to-(Noise + Distortion) Ratio THD Total Harmonic Distortion Up to 5th Harmonic SFDR Spurious Free ...

Page 4

LTC1603 W U POWER REQUIRE E TS range, otherwise specifications are at T SYMBOL PARAMETER V Positive Supply Voltage DD V Negative Supply Voltage SS I Positive Supply Current DD Nap Mode Sleep Mode I Negative Supply Current SS Nap ...

Page 5

CHARACTERISTICS Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: All voltage values are with respect to ground with DGND, OGND and AGND wired ...

Page 6

LTC1603 PIN FUNCTIONS + A (Pin 1): Positive Analog Input. The ADC converts the IN + difference voltage between A and tial range of 2.5V. A has a 2.5V input range when IN – ...

Page 7

CTIO AL BLOCK DIAGRA 3 V REFCOMP DIFFERENTIAL ANALOG INPUT – 2.5V IN TEST CIRCUITS Load Circuits for Access Timing (A) Hi-Z TO ...

Page 8

LTC1603 U U APPLICATIONS INFORMATION CONVERSION DETAILS The LTC1603 uses a successive approximation algorithm and internal sample-and-hold circuit to convert an analog signal to a 16-bit parallel output. The ADC is complete with a sample-and-hold, a precision reference and an ...

Page 9

U U APPLICATIONS INFORMATION SHDN Figure 2a. Nap Mode to Sleep Mode Timing SHDN t 4 CONVST Figure 2b. SHDN to CONVST Wake-Up Timing CONVST Figure CONVST Setup ...

Page 10

LTC1603 U U APPLICATIONS INFORMATION CONVST t 6 BUSY DATA (N – 1) DATA D15 TO D0 Figure 5. Mode 1a. CONVST Starts a Conversion. Data Outputs Always Enabled (CONVST = CS = ...

Page 11

U U APPLICATIONS INFORMATION CONVST t 6 BUSY t 10 DATA CONVST t 6 BUSY DATA three-state until read by the MPU with the RD signal. Mode 2 can be ...

Page 12

... DC accuracy and settling time are most critical. The following list is a summary of the op amps that are suitable for driving the LTC1603. More detailed informa- tion is available in the Linear Technology databooks, the TM LinearView CD-ROM and on our web site at: www ...

Page 13

U U APPLICATIONS INFORMATION 100 1 ANALOG INPUT A 3000pF REFCOMP AGND Figure 11. RC Input Filter Input Range The 2.5V input range of the LTC1603 is optimized for low noise and ...

Page 14

LTC1603 U U APPLICATIONS INFORMATION ANALOG INPUT 2V TO 2.7V DIFFERENTIAL 2V TO 2.7V LTC1450 47 F Figure 13. Driving V with a DAC REF 10k 100k INPUT FREQUENCY (Hz) ...

Page 15

U U APPLICATIONS INFORMATION –5V ANALOG INPUT R3 24k R8 50k R4 100 R5 R7 47k 50k R6 24k + 0 Figure 15b. Offset and Full-Scale Adjust Circuit + – (i.e., – 0.5LSB ...

Page 16

LTC1603 U U APPLICATIONS INFORMATION – REF 2 ANALOG + INPUT – CIRCUITRY 2 PERFORMANCE The noise of an ADC can be evaluated in two ways: signal- to-noise raio (SNR) in ...

Page 17

U U APPLICATIONS INFORMATION Signal-to-Noise Ratio The signal-to-noise plus distortion ratio [S/(N + D)] is the ratio between the RMS amplitude of the fundamental input frequency to the RMS amplitude of all other frequency components at the A/D output. The ...

Page 18

LTC1603 U U APPLICATIONS INFORMATION Intermodulation Distortion If the ADC input signal consists of more than one spectral component, the ADC transfer function nonlinearity can produce intermodulation distortion (IMD) in addition to THD. IMD is the change in one sinusoidal ...

Page 19

... FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 20

... Low Power, Low Gritch, 4-Quadrant Multiplication www.linear.com DGND DD DD SHDN CONTROL LOGIC CONVST 31 CONTROL AND 2. LINES TIMING REF BUSY OGND 28 OUTPUT B15 TO B0 16-BIT BUFFERS D15 TO D0 PARALLEL BUS LTC1603 AGND 1603 TA03 –5V LT/TP 0503 1K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2003 1603f ...

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