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Linear Technology Electronic Components Datasheet

LTC1604 Datasheet

High Speed/ 16-Bit/ 333ksps Sampling A/D Converter with Shutdown

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LTC1604 pdf
LTC1604
High Speed, 16-Bit, 333ksps
Sampling A/D Converter
with Shutdown
FEATURES
s A Complete, 333ksps 16-Bit ADC
s 90dB S/(N+D) and –100dB THD (Typ)
s Power Dissipation: 220mW (Typ)
s No Pipeline Delay
s No Missing Codes over Temperature
s Nap (7mW) and Sleep (10µW) Shutdown Modes
s Operates with Internal 15ppm/°C Reference
or External Reference
s True Differential Inputs Reject Common Mode Noise
s 5MHz Full Power Bandwidth
s ±2.5V Bipolar Input Range
s 36-Pin SSOP Package
U
APPLICATIONS
s Telecommunications
s Digital Signal Processing
s Multiplexed Data Acquisition Systems
s High Speed Data Acquisition
s Spectrum Analysis
s Imaging Systems
DESCRIPTION
The LTC®1604 is a 333ksps, 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 LTC1604’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 333ksps.
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
+
47µF
DIFFERENTIAL
ANALOG INPUT
± 2.5V
2.2µF
3
VREF
10µF
5V 10µF
10
+
36
+
35
AVDD AVDD
4 REFCOMP
4.375V
1.75X
7.5k 2.5V
REF
5V 10µF
+
9 10
DVDD
DGND
SHDN 33
CONTROL
LOGIC
AND
TIMING
CS 32
CONVST 31
RD 30
BUSY 27
µP
CONTROL
LINES
1 AIN+
2 AIN–
+
16-BIT
SAMPLING
ADC
B15 TO B0
OUTPUT
BUFFERS
AGND AGND AGND AGND VSS
5 6 7 8 34
OVDD 29
OGND 28
5V OR
3V
10µF
D15 TO D0
16-BIT
PARALLEL
BUS
11 TO 26
1604 TA01
+ 10µF
–5V
LTC1604 4096 Point FFT
0
fSAMPLE = 333kHz
–20 fIN = 100kHz
SINAD = 89dB
THD = –96dB
–40
–60
–80
–100
–120
–140
0 20 40 60 80 100 120 140 160
FREQUENCY (kHz)
1604 TA02
1


Linear Technology Electronic Components Datasheet

LTC1604 Datasheet

High Speed/ 16-Bit/ 333ksps Sampling A/D Converter with Shutdown

No Preview Available !

LTC1604 pdf
LTC1604
ABSOLUTE MAXIMUM RATINGS
AVDD = DVDD = OVDD = VDD (Notes 1, 2)
Supply Voltage (VDD) ................................................ 6V
Negative Supply Voltage (VSS)................................ – 6V
Total Supply Voltage (VDD to VSS) .......................... 12V
Analog Input Voltage
(Note 3) ......................... (VSS – 0.3V) to (VDD + 0.3V)
VREF Voltage (Note 4) ................. – 0.3V to (VDD + 0.3V)
REFCOMP Voltage (Note 4) ......... – 0.3V to (VDD + 0.3V)
Digital Input Voltage (Note 4) ....................– 0.3V to 10V
Digital Output Voltage .................. – 0.3V to (VDD + 0.3V)
Power Dissipation ............................................. 500mW
Operating Temperature Range
LTC1604C............................................... 0°C to 70°C
LTC1604I ............................................ – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER INFORMATION
AIN+
AIN–
VREF
REFCOMP
1
2
3
4
AGND 5
AGND 6
AGND 7
AGND 8
DVDD 9
DGND 10
D15 (MSB) 11
D14 12
D13 13
D12 14
D11 15
D10 16
D9 17
D8 18
TOP VIEW
36 AVDD
35 AVDD
34 VSS
33 SHDN
32 CS
31 CONV
30 RD
29 OVDD
28 OGND
27 BUSY
26 D0
25 D1
24 D2
23 D3
22 D4
21 D5
20 D6
19 D7
G PACKAGE
36-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 95°C/W
Consult factory for Military grade parts.
ORDER
PART NUMBER
LTC1604CG
LTC1604IG
LTC1604ACG
LTC1604AIG
CO VERTER CHARACTERISTICS With Internal Reference (Notes 5, 6)
PARAMETER
Resolution (No Missing Codes)
Integral Linearity Error
Transition Noise
Offset Error
Offset Tempco
Full-Scale Error
Full-Scale Tempco
CONDITIONS
(Note 7)
(Note 8)
(Note 9)
(Note 9)
Internal Reference
External Reference
IOUT(Reference) = 0, Internal Reference
q
q
q
LTC1604
MIN TYP MAX
15 16
±1 ±4
0.7
± 0.05 ± 0.125
0.5
± 0.125 ± 0.25
±0.25
±15
LTC1604A
MIN TYP MAX
16 16
±0.5 ±2
0.7
±0.05 ±0.125
0.5
±0.125 ±0.25
±0.25
±15
UNITS
Bits
LSB
LSB
%
ppm/°C
%
%
ppm/°C
A ALOG I PUT
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN Analog Input Range (Note 2)
IIN Analog Input Leakage Current
CIN Analog Input Capacitance
4.75 VDD 5.25V, – 5.25 VSS – 4.75V,
VSS (AIN–, AIN+) AVDD
CS = High
Between Conversions
During Conversions
q
±2.5
±1
43
5
V
µA
pF
pF
tACQ
tAP
tjitter
CMRR
Sample-and-Hold Acquisition Time
Sample-and-Hold Acquisition Delay Time
Sample-and-Hold Acquisition Delay Time Jitter
Analog Input Common Mode Rejection Ratio
– 2.5V < (AIN– = AIN+) < 2.5V
380 ns
– 1.5 ns
5 psRMS
68 dB
2


Part Number LTC1604
Description High Speed/ 16-Bit/ 333ksps Sampling A/D Converter with Shutdown
Maker Linear Technology
Total Page 20 Pages
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