參數(shù)資料
型號(hào)： AD7608BSTZ-RL
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 5/32頁(yè)
文件大小： 0K
描述： IC DAS W/ADC 18BIT 8CH 64LQFP
標(biāo)準(zhǔn)包裝： 1,500
類型： 數(shù)據(jù)采集系統(tǒng)（DAS），ADC
分辨率（位）： 18 b
采樣率（每秒）： 200k
數(shù)據(jù)接口： DSP，MICROWIRE?，并聯(lián)，QSPI?，串行，SPI?
電壓電源： 模擬和數(shù)字
電源電壓： 2.3 V ~ 5.25 V，4.75 V ~ 5.25 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 64-LQFP
供應(yīng)商設(shè)備封裝： 64-LQFP（10x10）
包裝： 帶卷 (TR)
Data Sheet
AD7608
Rev. A | Page 13 of 32
Pin No.
Type
Mnemonic
Description
34
DI
REF SELECT
Internal/External Reference Selection Input. Logic input. If this pin is set to logic high then the
internal reference is selected and is enabled, if this pin is set to logic low then the internal reference
is disabled and an external reference voltage must be applied to the REFIN/REFOUT pin.
36, 39
P
REGCAP
Decoupling Capacitor Pins for Voltage Output from Internal Regulator. These output pins should be
decoupled separately to AGND using a 1 μF capacitor. The voltage on these output pins is in the
range of 2.5 V to 2.7 V.
42
REF
REFIN/
REFOUT
Reference Input/Reference Output. The on-chip reference of 2.5 V is available on this pin for external
use if the REF SELECT pin is set to a logic high. Alternatively, the internal reference can be disabled
by setting the REF SELECT pin to a logic low and an external reference of 2.5 V can be applied to this
input. See the Internal/External Reference section. Decoupling is required on this pin for both the
internal or external reference options. A 10 F capacitor should be applied from this pin to ground
close to the REFGND pins.
43, 46
REF
REFGND
Reference Ground Pins. These pins should be connected to AGND.
44, 45
REF
REFCAPA,
REFCAPB
Reference Buffer Output Force/Sense Pins. These pins must be connected together and decoupled
to AGND using a low ESR 10 μF ceramic capacitor.
49, 51, 53,
55, 57, 59,
61, 63
AI
V1 to V8
Analog Inputs. These pins are single-ended analog inputs. The analog input range of these channels
is determined by the RANGE pin.
50, 52, 54,
56, 58, 60,
62, 64
AI/
GND
V1GND to
V8GND
Analog Input Ground Pins. These pins correspond to the V1 to V8 analog input pins. Connect all
analog input AGND pins to the AGND plane of a system.
1
Refers to classification of pin type; P denotes power, AI denotes analog input, REF denotes reference, DI denotes digital input, DO denotes digital output.
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