LTC1608CG#PBF Linear Technology, LTC1608CG#PBF Datasheet

IC A/D CONV 16BIT SAMPLNG 36SSOP

LTC1608CG#PBF

Manufacturer Part Number
LTC1608CG#PBF
Description
IC A/D CONV 16BIT SAMPLNG 36SSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1608CG#PBF

Number Of Bits
16
Sampling Rate (per Second)
500k
Data Interface
Parallel
Number Of Converters
1
Power Dissipation (max)
420mW
Voltage Supply Source
Analog and Digital, Dual ±
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
36-SSOP (0.200", 5.30mm Width)
Number Of Elements
1
Resolution
16Bit
Architecture
SAR
Sample Rate
500KSPS
Input Polarity
Bipolar
Input Type
Voltage
Rated Input Volt
±2.5V
Differential Input
Yes
Power Supply Requirement
Dual
Single Supply Voltage (typ)
Not RequiredV
Single Supply Voltage (min)
Not RequiredV
Single Supply Voltage (max)
Not RequiredV
Dual Supply Voltage (typ)
±5V
Dual Supply Voltage (min)
±4.75V
Dual Supply Voltage (max)
±5.25V
Power Dissipation
420mW
Integral Nonlinearity Error
±4LSB
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
36
Package Type
SSOP
Resolution (bits)
16bit
Sampling Rate
500kSPS
Input Channel Type
Differential
Supply Voltage Range - Analogue
± 4.75V To ± 5.25V
Supply Voltage Range - Digital
4.75V To
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC1608CG#PBFLTC1608CG
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTC1608CG#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
ANALOG INPUT
DIFFERENTIAL
A Complete, 500ksps 16-Bit ADC
90dB S/(N+D) and –100dB THD (Typ)
Power Dissipation: 270mW (Typ)
No Pipeline Delay
No Missing Codes Over Temperature
Nap (7mW) and Sleep (10 W) Shutdown Modes
Operates with Internal 15ppm/ C Reference
or External Reference
True Differential Inputs Reject Common Mode Noise
5MHz Full Power Bandwidth
36-Pin SSOP Package
Pin Compatible with the LTC1604
Telecommunications
Digital Signal Processing
Multiplexed Data Acquisition Systems
High Speed Data Acquisition
Spectrum Analysis
Imaging Systems
2.5V Bipolar Input Range
22 F
2.5V
+
4
2
1
REFCOMP
A
A
IN
IN
+
3
V
2.2 F
REF
+
U
AGND
SAMPLING
1.75X
5
16-BIT
10 F
ADC
AGND
+
AV
DD
6
36
10
AGND
7.5k
AV
7
B15 TO B0
LTC1608
U
5V
DD
35
+
2.5V
REF
10 F
AGND
8
–5V
V
SS
34
5V
BUFFERS
CONTROL
OUTPUT
DV
9
TIMING
LOGIC
+
+
AND
DD
10 F
10 F
10
DGND
D15 TO D0
CONVST
OGND
SHDN
BUSY
OV
RD
CS
DD
11 TO 26
33
32
31
30
27
1608 TA01
29
28
High Speed, 16-Bit, 500ksps
DESCRIPTIO
The LTC
verter that draws only 270mW 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 LTC1608’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 500ksps.
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.
Circuitry in the LTC1608 is covered under US Patent #5,764,175
16-BIT
PARALLEL
BUS
, LTC and LT are registered trademarks of Linear Technology Corporation.
Sampling A/D Converter
+
CONTROL
LINES
P
10 F
®
5V OR
3V
1608 is a 500ksps, 16-bit sampling A/D con-
U
–100
–120
–140
–60
–80
–20
–40
with Shutdown
0
0
LTC1608 4096 Point FFT
50
FREQUENCY (kHz)
100
LTC1608
150
f
f
SINAD = 86.7dB
THD = –92.6dB
SAMPLE
IN
= 98.754kHz
200
= 500kHz
1608 TA02
1
250

Related parts for LTC1608CG#PBF

LTC1608CG#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. Circuitry in the LTC1608 is covered under US Patent #5,764,175 ...

Page 2

LTC1608 ABSOLUTE AXI U RATI (Notes Supply Voltage (V ) ................................................ 6V DD Negative Supply Voltage (V ) ............................... – Total ...

Page 3

ACCURACY 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 Dynamic Range IMD Intermodulation Distortion Full Power Bandwidth Full Linear Bandwidth ...

Page 4

LTC1608 W U POWER REQUIRE E TS otherwise specifications are (Note 5) A SYMBOL PARAMETER V Positive Supply Voltage DD V Negative Supply Voltage SS I Positive Supply Current DD Nap Mode Sleep Mode I ...

Page 5

ELECTRICAL CHARACTERISTICS Note 4: When these pin voltages are taken below V by internal diodes. This product can handle input currents greater than 100mA below V without latchup. These pins are not clamped Note ...

Page 6

LTC1608 W U TYPICAL PERFOR A CE CHARACTERISTICS Intermodulation Distortion 500kHz SAMPLE f = 96.56kHz IN1 – 99.98kHz IN2 –40 –60 –80 –100 –120 –140 0 50 100 150 200 250 FREQUENCY (kHz) 1608 G07 ...

Page 7

CTIO AL BLOCK DIAGRA REFCOMP DIFFERENTIAL ANALOG INPUT 2 A 2.5V IN TEST CIRCUITS Load Circuits for Access Timing (A) Hi AND V ...

Page 8

LTC1608 U U APPLICATIO S I FOR ATIO C SMPL SAMPLE + A IN HOLD ZEROING SWITCHES C SMPL SAMPLE – HOLD +C DAC –C DAC +V DAC –V DAC SAR Figure 1. Simplified Block Diagram compared with ...

Page 9

U U APPLICATIO S I FOR ATIO CONVST Figure 3. CS top CONVST Setup Timing CONV 250 500 750 1000 CONVST LOW TIME, t Figure 4. Change ...

Page 10

LTC1608 U U APPLICATIO S I FOR ATIO CONVST t 6 BUSY DATA (N – 1) DATA D15 TO D0 Figure 5. Mode 1a. CONVST Starts a Conversion. Data Outputs Always Enabled (CONVST ...

Page 11

U U APPLICATIO S I FOR ATIO CONVST t 6 BUSY t 10 DATA CONVST t 6 BUSY DATA spike while charging the sample-and-hold capacitors at the end of conversion. ...

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 LTC1608. More detailed informa- tion is available in the Linear Technology databooks, the TM LinearView CD-ROM and on our web site at: www.linear-tech. com. ® ...

Page 13

U U APPLICATIO S I FOR ATIO V 3 REF 2.500V REFCOMP 4 REFERENCE 4.375V AMP 12k R3 16k AGND 5 Figure 12a. LTC1608 Reference Circuit 5V 1 ANALOG INPUT LT1019A-2 OUT ...

Page 14

LTC1608 U U APPLICATIO S I FOR ATIO Differential inputs allow greater flexibility for accepting different input ranges. Figure 14b shows a circuit that converts analog input signal with only an additional buffer that is not ...

Page 15

U U APPLICATIO S I FOR ATIO applications where the ADC data outputs and control signals are connected to a continuously active micropro- cessor bus possible to get errors in the conversion results. These errors are due to ...

Page 16

LTC1608 U U APPLICATIO S I FOR ATIO JP1 C13 C12 LTC1608 V REF DD1 C11 ...

Page 17

U U APPLICATIO S I FOR ATIO Figure 17b. Suggested Evaluation Circuit Board. Component Side Silkscreen and Signal Traces ANALOG GROUND PLANE Figure 17d. Suggested Evaluation Circuit Board. Inner Layer 1 Showing Separate Analog and Digital Ground Planes 2500 2000 ...

Page 18

LTC1608 U U APPLICATIO S I FOR ATIO 0 f SAMPLE f = 2.807kHz IN –20 SINAD = 88.9dB THD = –98dB –40 –60 –80 –100 –120 –140 50 100 150 0 FREQUENCY (kHz) Figure 19a. This FFT of the ...

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 DGND DD DD SHDN LTC1608 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 AGND –5V 1608fs, sn1608 LT/TP 0601 2K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2000 1608 TA03 ...

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