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參數(shù)資料
| 型號： | AD7690BRMZ-RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 18BIT 400KSPS 10-MSOP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 系列： | PulSAR® |
| 位數(shù)： | 18 |
| 采樣率（每秒）： | 400k |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 20mW |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 1 個差分，雙極 |
18-Bit, 1.5 LSB INL, 400 kSPS PulSAR
Differential ADC in MSOP/QFN
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
2006–2011 Analog Devices, Inc. All rights reserved.
FEATURES
18-bit resolution with no missing codes
Throughput: 400 kSPS
INL: ±0.75 LSB typ, ±1.5 LSB max (±6 ppm of FSR)
Dynamic range: 102 dB @ 400 kSPS
Oversampled dynamic range: 125 dB @ 1 kSPS
Noise-free code resolution: 20 bits @ 1 kSPS
Effective resolution: 22.7 bits @ 1 kSPS
SINAD: 101.5 dB @ 1 kHz
THD: 125 dB @ 1 kHz
True differential analog input range: ±VREF
0 V to VREF with VREF up to VDD on both inputs
No pipeline delay
Single-supply 5 V operation with
1.8 V/2.5 V/3 V/5 V logic interface
Serial interface, SPI/QSPI/MICROWIRE/DSP compatible
Daisy-chain multiple ADCs and busy indicator
Power dissipation
4.25 μW @ 100 SPS
4.25 mW @ 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 QFN/MSOP PulSAR ADCs
APPLICATIONS
Battery-powered equipment
Data acquisition
Seismic data acquisition systems
DVMs
Instrumentation
Medical instruments
1.5
–1.5
0
262144
CODE
IN
L
(
L
S
B
)
1.0
0.5
0
–0.5
–1.0
05792-
025
65536
131072
196608
POSITIVE INL = +0.42LSB
NEGATIVE INL = –0.6LSB
Figure 1. Integral Nonlinearity vs. Code
APPLICATION EXAMPLE
AD7690
REF
GND
VDD
IN+
IN–
VIO
SDI
SCK
SDO
CNV
+1.8V TO VDD
3- OR 4-WIRE
INTERFACE
(SPI, DAISY CHAIN, CS)
+2.5V TO +5V
±10V, ±5V, ...
+5V
ADA4941-1
0
5
792-
001
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
Differential
16-Bit True
Differential
16-Bit Pseudo
Differential
14-Bit Pseudo
Differential
GENERAL DESCRIPTION
The AD7690 is an 18-bit, successive approximation, analog-to-
digital converter (ADC) that operates from a single power supply,
VDD. It contains a low power, high speed, 18-bit sampling ADC
with no missing codes, an internal conversion clock, and a
versatile serial interface port. On the CNV rising edge, it
samples the voltage difference between the IN+ and IN pins.
The voltages on these pins swing in opposite phase between 0 V
and REF. The reference voltage, REF, is applied externally and
can be set up to the supply voltage.
The power of the AD7690 scales linearly with the 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 and provides an optional busy indicator. It is compatible
with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIO supply.
The AD7690 is housed in a 10-lead MSOP or a 10-lead QFN
(LFCSP) with operation specified from 40°C to +85°C.
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| AD7691BCPZRL | 功能描述:IC ADC 18BIT SAR 250KSPS 10LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
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