ADS1605 Datasheet PDF - Burr-Brown Corporation
| Part Number | ADS1605 | |
| Description | 16 BIT 5MSPS ANALOG TO DIGITAL CONVERTER | |
| Manufacturers | Burr-Brown Corporation | |
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ADS1605
ADS1606
SBAS274E − MARCH 2003 − REVISED JUNE 2004
16ĆBit, 5MSPS
AnalogĆtoĆDigital Converter
FEATURES
D Data Rate: 5MSPS (10MSPS in 2X Mode)
D Signal-to-Noise Ratio: 88dB
D Total Harmonic Distortion: −99dB
D Spurious-Free Dynamic Range: 101dB
D Linear Phase with 2.45 MHz Bandwidth
D Passband Ripple: ±0.0025dB
D Selectable On-Chip Reference
D Directly Connects to TMS320C6000 DSPs
D Easily Upgradable to 18 Bits with the
ADS1625 and ADS1626
D Adjustable Power Dissipation: 315 to 570mW
D Power Down Mode
D Supplies: Analog +5V
Digital +3V
Digital I/O +2.7 to +5.25V
APPLICATIONS
D Scientific Instruments
D Automated Test Equipment
D Data Acquisition
D Medical Imaging
D Vibration Analysis
DESCRIPTION
The ADS1605 and ADS1606 are high-speed, high-precision,
delta-sigma analog-to-digital converters (ADCs) with 16-bit
resolution. The data rate is 5 mega-samples per second
(MSPS), the bandwidth (−3dB) is 2.45MHz, and passband
ripple is less than ±0.0025dB (to 2.2MHz). Both devices offer
the same outstanding performance at these speeds with a
signal-to-noise ratio up to 88dB, total harmonic distortion
down to −99dB, and a spurious-free dynamic range up to
101dB. For even higher-speed operation, the data rate can
be doubled to 10MSPS in 2X mode. The ADS1606 includes
an adjustable first-in first-out buffer (FIFO) for the output data.
The input signal is measured against a voltage reference that
can be generated on-chip or supplied externally. The digital
output data is provided over a simple parallel interface that
easily connects to digital signal processors (DSPs). An
out-of-range monitor reports when the input range has been
exceeded. The ADS1605/6 operate from a +5V analog
supply (AVDD) and +3V digital supply (DVDD). The digital
I/O supply (IOVDD) operates from +2.7 to +5.25V, enabling
the digital interface to support a range of logic families. The
analog power dissipation is set by an external resistor and
can be reduced when operating at slower speeds. A power
down mode, activated by a digital I/O pin, shuts down all
circuitry. The ADS1605/6 are offered in a TQFP-64 package
using TI PowerPAD technology.
The ADS1605 and ADS1606, along with their 18-bit
counterparts, the ADS1625 and ADS1626, are well suited
for the demanding measurement requirements of scientific
instrumentation, automated test equipment, data acquisi-
tion, and medical imaging.
VREFP VREFN VMID RBIAS VCAP AVDD DVDD IOVDD
Reference and Bias Circuits
AINP
AINN
DS
Modulator
ADS1605
ADS1606
AGND
Digital
Filter
I/O
Interface
ADS1606 Only
FIFO
DGND
PD
REFEN
RESET
CLK
CS
2XMODE
RD
DRDY
OTR
DOUT[15:0]
FIFO_LEV[2:0]
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.
PowerPAD is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright 2003−2004, Texas Instruments Incorporated
www.ti.com
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www.ti.com
ADS1605
ADS1606
SBAS274E − MARCH 2003 − REVISED JUNE 2004
ELECTRICAL CHARACTERISTICS (continued)
All specifications at −40°C to +85°C, AVDD = 5V, DVDD = IOVDD = 3V, fCLK = 40MHz, External VREF = +3V, 2XMODE = low, VCM = 2.0V,
FIFO disabled, and RBIAS = 37kΩ, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Voltage Reference(1)
VREF = (VREFP − VREFN)
VREFP
2.5 3.0 3.2 V
3.75 4.0 4.25 V
VREFN
0.75 1.0 1.25 V
VMID
2.3 2.5 2.8 V
VREF drift
Startup time
Internal reference (REFEN = low)
Internal reference (REFEN = low)
50 ppm/°C
15 ms
Clock Input
Frequency (fCLK)
Duty Cycle
Digital Input/Output
fCLK = 40MHz
40 50 MHz
45 55 %
VIH
VIL
VOH
VOL
Input leakage
IOH = 50µA
IOL = 50µA
DGND < VDIGIN < IOVDD
0.7 IOVDD
DGND
IOVDD − 0.5
IOVDD
0.3 IOVDD
DGND +0.5
±10
V
V
V
V
µA
Power-Supply Requirements
AVDD
4.75 5.25 V
DVDD
2.7 3.3 V
IOVDD
2.7 5.25 V
AVDD current (IAVDD)
REFEN = low
REFEN = high
110 135 mA
85 105 mA
DVDD current (IDVDD)
IOVDD current (IIOVDD)
Power dissipation
IOVDD = 3V
AVDD = 5V, DVDD = 3V, IOVDD = 3V,
REFEN = high
PD = low, CLK disabled
45 55 mA
4 6 mA
570 710 mW
5 mW
Temperature Range
Specified
−40 +85 °C
Operating
−40
+105
°C
Storage
−60
+150
°C
Thermal Resistance, θJA
θJC
PowerPAD soldered to PCB with 2oz.
trace and copper pad.
25 °C/W
0.5 °C/W
(1) The specification limits for VREF, VREFP, VREFN, and VMID apply when using the internal or an external reference. The internal reference
voltages are bounded by the limits shown. When using an external reference, the limits indicate the allowable voltages that can be applied to
the reference pins.
5
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| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ADS1605.PDF Datasheet ] | |
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