ANALOG-TO-DIGITAL CONVERTER. ADS8509 Datasheet

ADS8509 CONVERTER. Datasheet pdf. Equivalent


Burr-Brown Corporation ADS8509
BurrĆBrown Products
from Texas Instruments
ADS8509
SLAS324A – OCTOBER 2004 – REVISED JUNE 2005
16-BIT 250-KSPS SERIAL CMOS SAMPLING ANALOG-TO-DIGITAL CONVERTER
FEATURES
250-kHz Sampling Rate
4-V, 5-V, 10 V, ±3.33-V, ±5-V, and ±10-V Input
Ranges
±2.0 LSB Max INL
±1 LSB Max DNL, 16-Bit No Missing Codes
SPI Compatible Serial Output with
Daisy-Chain (TAG) Feature
Single 5-V Supply
Pin-Compatible With ADS7809 (Low Speed)
and 12-Bit ADS8508/7808
Uses Internal or External Reference
70-mW Typ Power Dissipation at 250 KSPS
20-Pin SO and 28-Pin SSOP Packages
Simple DSP Interface
APPLICATIONS
Industrial Process Control
Data Acquisition Systems
Digital Signal Processing
Medical Equipment
Instrumentation
DESCRIPTION
The ADS8509 is a complete 16-bit sampling
analog-to-digital (A/D) converter using state-of-the-art
CMOS structures. It contains a complete 16-bit,
capacitor-based, successive approximation register
(SAR) A/D converter with sample-and-hold, refer-
ence, clock, and a serial data interface. Data can be
output using the internal clock or can be
synchronized to an external data clock. The ADS8509
also provides an output synchronization pulse for
ease of use with standard DSP processors.
The ADS8509 is specified at a 250-kHz sampling rate
over the full temperature range. Precision resistors
provide various input ranges including ±10 V and 0 V
to 5 V, while the innovative design allows operation
from a single +5-V supply with power dissipation
under 100 mW.
The ADS8509 is available in 20-pin SO and 28-pin
SSOP packages, both fully specified for operation
over the industrial -40°C to 85°C temperature range.
Successive Approximation Register
Clock EXT/INT
R1IN
R2IN
R3IN
9.8 k
4.9 k
2.5 k
CAP
REF
CDAC
10 k
Buffer
4 k
Internal
+2.5 V Ref
Comparator
Serial
Data
Out
&
Control
BUSY
DATACLK
DATA
R/C
SB/BTC
CS
PWRD
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2005, Texas Instruments Incorporated


ADS8509 Datasheet
Recommendation ADS8509 Datasheet
Part ADS8509
Description 16-BIT 250-KSPS SERIAL CMOS SAMPLING ANALOG-TO-DIGITAL CONVERTER
Feature ADS8509; BurrĆBrown Products from Texas Instruments ADS8509 SLAS324A – OCTOBER 2004 – REVISED JUNE 2005 16-.
Manufacture Burr-Brown Corporation
Datasheet
Download ADS8509 Datasheet




Burr-Brown Corporation ADS8509
ADS8509
SLAS324A – OCTOBER 2004 – REVISED JUNE 2005
PACKAGE/ORDERING INFORMATION(1)
www.ti.com
PRODUCT
MINIMUM
RELATIVE
ACCURACY
(LSB)
NO
MISSING
CODE
ADS8509IB
±2
16
ADS8509I
±3
15
MINIMUM
SINAD
(dB)
85
83
SPECIFICATION
TEMPERATURE
RANGE
-40°C to 85°C
-40°C to 85°C
PACKAGE PACKAGE
LEAD
DESIGNATOR
SO-20
SSOP-28
SO-20
SSOP-28
DW
DB
DW
DB
ORDERING
NUMBER
TRANSPORT
MEDIA, QTY
ADS8509IBDW
ADS8509IBDWR
ADS8509IBDB
ADS8509IBDBR
ADS8509IDW
ADS8509IDWR
ADS8509IDB
ADS8509IDBR
Tube, 25
Tape and Reel, 2000
Tube, 50
Tape and Reel, 2000
Tube, 25
Tape and Reel, 2000
Tube, 50
Tape and Reel, 2000
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)(1)
Analog inputs
R1IN
R2IN
R3IN
REF
DGND, AGND2
Ground voltage differences
Digital inputs
VANA
VDIG to VANA
VDIG
Maximum junction temperature
Storage temperature range
Internal power dissipation
Lead temperature (soldering, 1.6 mm from case 10 seconds)
(1) All voltage values are with respect to network ground terminal.
UNIT
±25 V
±25 V
±25 V
+VANA + 0.3 V to AGND2 - 0.3 V
±0.3 V
6V
0.3 V
6V
-0.3 V to +VDIG + 0.3 V
165°C
–65°C to 150°C
700 mW
260°C
2



Burr-Brown Corporation ADS8509
ADS8509
www.ti.com
SLAS324A – OCTOBER 2004 – REVISED JUNE 2005
ELECTRICAL CHARACTERISTICS
At TA = -40°C to 85°C, fs = 250 kHz, VDIG = VANA = 5 V, using internal reference and 0.1%, 0.25 W fixed resistors (See
Figure 29 and Figure 30) (unless otherwise specified)
PARAMETER
TEST CONDITIONS
Resolution
ANALOG INPUT
Voltage ranges(1)
Impedance (1)
Capacitance
THROUGHPUT SPEED
Conversion cycle
Throughput rate
DC ACCURACY
INL Integral linearity error
DNL Differential linearity error
No missing codes
Transition noise(3)
Full-scale
error (4) (5)
±10 V range
All other ranges
Full-scale error drift
Full-scale
error(4) (5)
±10 V range
All other ranges
Full-scale error drift
Bipolar zero error(4)
Bipolar zero error drift
Unipolar zero
error (4)
10 V range
4 V and 5 V
range
Unipolar zero error drift
Recovery to rated accuracy after
power down
Power supply sensitivity
(VDIG = VANA = VD)
AC ACCURACY
SFDR Spurious-free dynamic range
THD Total harmonic distortion
SINAD
Signal-to-(noise+distortion)
SNR Signal-to-noise ratio
Full-power bandwidth(7)
SAMPLING DYNAMICS
Aperture delay
Transient response
Overvoltage recovery(8)
Acquire and convert
Int. Ref. with 0.1% external
fixed resistors
Int. Ref.
Ext. Ref. with 0.1% external
fixed resistors
Ext. Ref.
1-µF Capacitor to CAP
+4.75 V < VD < +5.25 V
fI = 20 kHz
fI = 20 kHz
fI = 20 kHz
–60-dB Input
fI = 20 kHz
FS Step
ADS8509I
MIN TYP
ADS8509IB
MAX MIN TYP
16
MAX
16
UNIT
Bits
50
250
-3
-2
15
1
-0.5
-0.5
±7
-0.5
-0.5
±2
-10
±0.4
-5
-3
±2
1
-8
90 99
-98
83 88
30
83 88
500
5
150
50
4
250
3 -2
2 -1
16
0.5 -0.5
0.5 -0.5
0.5 -0.5
0.5 -0.5
10 -5
5 -5
3 -3
8 -8
1
±7
±2
±0.4
±2
1
95
-90
85
86
99
-98
88
32
88
500
5
2
150
pF
4 µs
kHz
2 LSB(2)
1 LSB
Bits
LSB
0.5
%FSR
0.5
ppm/°C
0.5
%FSR
0.5
ppm/°C
5 mV
ppm/°C
5
3 mV
ppm/°C
ms
8 LSB
dB (6)
-93 dB
dB
dB
dB
kHz
ns
2 µs
ns
(1) ±10 V, 0 V to 5 V, etc. (see Table 3)
(2) LSB means least significant bit. For the ±10-V input range, one LSB is 305 µV.
(3) Typical rms noise at worst case transitions and temperatures.
(4) As measured with fixed resistors shown in Figure 29 and Figure 30. Adjustable to zero with external potentiometer. Factory calibrated
with 0.1%, 0.25 W resistors.
(5) For bipolar input ranges, full-scale error is the worst case of -full-scale or +full-scale uncalibrated deviation from ideal first and last code
transitions, divided by the transition voltage (not divided by the full-scale range) and includes the effect of offset error. For unipolar input
ranges, full-scale error is the deviation of the last code transition divided by the transition voltage. It also includes the effect of offset
error.
(6) All specifications in dB are referred to a full-scale ±10-V input.
(7) Full-power bandwidth is defined as the full-scale input frequency at which signal-to-(noise + distortion) degrades to 60 dB.
(8) Recovers to specified performance after 2 x FS input overvoltage.
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