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AD7685BRMZRL7 データシート(PDF) 1 Page - Analog Devices

部品番号 AD7685BRMZRL7
部品情報  16-Bit, 250 kSPS PulSAR ADC in MSOP/QFN
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD7685BRMZRL7 データシート(HTML) 1 Page - Analog Devices

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16-Bit, 250 kSPS PulSAR
ADC in MSOP/QFN
AD7685
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2004–2011 Analog Devices, Inc. All rights reserved.
FEATURES
16-bit resolution with no missing codes
Throughput: 250 kSPS
INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR)
SINAD: 93.5 dB @ 20 kHz
THD: −110 dB @ 20 kHz
Pseudo differential analog input range
0 V to VREF with VREF up to VDD
No pipeline delay
Single-supply operation 2.3 V to 5.5 V with
1.8 V to 5 V logic interface
Serial interface SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible
Daisy-chain multiple ADCs, BUSY indicator
Power dissipation
1.4 μW @ 2.5 V/100 SPS
1.35 mW @ 2.5 V/100 kSPS, 4 mW @ 5 V/100 kSPS
Standby current: 1 nA
10-lead package: MSOP (MSOP-8 size) and
3 mm × 3 mm QFN (LFCSP) (SOT-23 size)
Pin-for-pin-compatible with 10-lead MSOP/QFN PulSAR® ADCs
APPLICATIONS
Battery-powered equipment
Medical instruments
Mobile communications
Personal digital assistants (PDAs)
Data acquisition
Instrumentation
Process controls
CODE
65536
0
16384
32768
49152
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
POSITIVE INL = +0.33LSB
NEGATIVE INL = –0.50LSB
Figure 1. Integral Nonlinearity vs. Code.
APPLICATION DIAGRAM
AD7685
REF
GND
VDD
IN+
IN–
VIO
SDI
SCK
SDO
CNV
1.8V TO VDD
3- OR 4-WIRE INTERFACE
(SPI, DAISY CHAIN, CS)
0.5V TO VDD
2.5V TO 5V
0 TO VREF
Figure 2.
Table 1. MSOP, QFN (LFCSP)/SOT-23
14-/16-/18-Bit PulSAR ADC
Type
100
kSPS
250
kSPS
400 kSPS
to
500 kSPS
1000
kSPS
ADC
Driver
18-Bit True
AD7691
AD7690
AD7982
ADA4941
Differential
AD7982
ADA4841
16-Bit True
AD7684
AD7687
AD7688
ADA4941
Differential
AD7693
ADA4841
16-Bit Pseudo
AD7680
AD7685
AD7686
AD7980
ADA4841
Differential
AD7683
AD7694
14-Bit Pseudo
AD7940
AD7942
AD7946
ADA4841
Differential
GENERAL DESCRIPTION
The AD7685 is a 16-bit, charge redistribution successive
approximation, analog-to-digital converter (ADC) that operates
from a single power supply, VDD, between 2.3 V to 5.5 V. It
contains a low power, high speed, 16-bit sampling ADC with no
missing codes, an internal conversion clock, and a versatile serial
interface port. The part also contains a low noise, wide bandwidth,
short aperture delay, track-and-hold circuit. On the CNV rising
edge, it samples an analog input IN+ between 0 V to REF with
respect to a ground sense IN−. The reference voltage, REF, is
applied externally and can be set up to the supply voltage.
Power dissipation scales linearly with throughput.
The SPI-compatible serial interface also features the ability,
using the SDI input, to daisy chain several ADCs on a single
3-wire bus or provides an optional BUSY indicator. It is
compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the
separate supply VIO.
The AD7685 is housed in a 10-lead MSOP or a 10-lead QFN
(LFCSP) with operation specified from −40°C to +85°C.


同様の部品番号 - AD7685BRMZRL7

メーカー部品番号データシート部品情報
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Analog Devices
AD7685BRMZRL7 AD-AD7685BRMZRL7 Datasheet
542Kb / 29P
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同様の説明 - AD7685BRMZRL7

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AD7686CRMZ AD-AD7686CRMZ Datasheet
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