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参数资料
| 型号： | AD7865ASZ-3 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 17/19页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT 4CHAN 5V 44MQFP |
| 标准包装： | 1 |
| 位数： | 14 |
| 采样率（每秒）： | 350k |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 160mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-QFP |
| 供应商设备封装： | 44-MQFP（10x10） |
| 包装： | 托盘 |
| 输入数目和类型： | 4 个差分，双极 |
REV. B
AD7865
–7–
Pin
Mnemonic
Description
24
VREF
Reference Input/Output. This pin provides access to the internal reference (2.5 V
± 20 mV)
and also allows the internal reference to be overdriven by an external reference source (2.5 V
± 5%). A 0.1 F decoupling capacitor should be connected between this pin and AGND.
25
AVDD
Analog Positive Supply Voltage, 5.0 V
± 5%. A 0.1 F decoupling capacitor should be con-
nected between this pin and AGND.
26
AGND
Analog Ground. General Analog Ground. This AGND pin should be connected to the system’s
AGND plane.
27–34
DB13–DB6
Data Bit 13 is the MSB, followed by Data Bit 12 to Data Bit 6. Three-state TTL outputs.
Output coding is twos complement for AD7865-1 and AD7865-3, and straight binary for
AD7865-2.
35
DVDD
Positive Supply Voltage for Digital section, 5.0 V
± 5%. A 0.1 F decoupling capacitor should
be connected between this pin and AGND. Both DVDD and AVDD should be externally tied
together.
36
VDRIVE
This pin provides the positive supply voltage for the output drivers (DB0 to DB13), BUSY,
EOC and FRSTDATA. It is normally tied to DV
DD. VDRIVE should be decoupled with a
0.1
F capacitor. It allows improved performance when reading during the conversion
sequence. Also, the output data drivers may be powered by a 3 V
± 10% supply to facilitate
interfacing to 3 V processors and DSPs.
37
DGND
Digital Ground. Ground reference for Digital circuitry. This DGND pin should be connected
to the system’s DGND plane. The system’s DGND and AGND planes should be connected
together at one point only, preferably at an AGND pin.
38, 39
DB5, DB4
Data Bit 5 to Data Bit 4. Three-state TTL outputs.
40–43
DB3–DB0
Data Bit 3 to Data Bit 0. Bidirectional data pins. When a read operation takes place, these
pins are three-state TTL outputs. The channel select register is programmed with the data on
the DB0–DB3 pins with standard
CS and WR signals. DB0 represents Channel 1 and DB3
represents Channel 4.
44
EOC
End-of-Conversion. Active low logic output indicating conversion status. The end of each
conversion in a conversion sequence is indicated by a low going pulse on this line.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7865ASZ-3REEL | 功能描述:IC ADC 14BIT 4CHAN 5V 44-MQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7865ASZ-3REEL-SCHNEIDER | 制造商:Analog Devices 功能描述: |
| AD7865BS-1 | 制造商:Rochester Electronics LLC 功能描述:4 CH. SIMULTANEOUS BIPOLAR,14-B ADC I.C. - Bulk 制造商:Analog Devices 功能描述:IC 14-BIT ADC |
| AD7865BS-1Z | 制造商:Analog Devices 功能描述:ADC 14BIT 4CH 350KSPS 44LQ 制造商:Analog Devices 功能描述:ADC, 14BIT, 4CH, 350KSPS, 44LQFP; Resolution (Bits):14bit; Sampling Rate:350kSPS; Supply Voltage Type:Single; Supply Voltage Min:4.75V; Supply Voltage Max:5.25V; Supply Current:32mA; Digital IC Case Style:LQFP; No. of Pins:44; Input ;RoHS Compliant: Yes |
| AD7865BS-2 | 制造商:Rochester Electronics LLC 功能描述:4 CH. SIMULTANEOUS BIPOLAR,14-B ADC I.C. - Bulk |
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