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参数资料
| 型号： | AD7870JPZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT SAMPL LC2MOS 28PLCC |
| 产品变化通告： | Conversion Time Change |
| 标准包装： | 750 |
| 位数： | 12 |
| 采样率（每秒）： | 100k |
| 数据接口： | 串行，并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 95mW |
| 电压电源： | 双 ± |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-LCC（J 形引线） |
| 供应商设备封装： | 28-PLCC（11.51x11.51） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个单端，双极 |
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AD7870/AD7875/AD7876
Rev. C | Page 13 of
28
R1
10k
R2
500
R3
10k
AGND
VIN
R5
10k
R4
10k
AD7870/
AD7875/
AD78761
1ADDITIONAL PINS OMITTED FOR CLARITY.
V1
07
73
0-
01
3
Positive Full-Scale Adjust
Apply a voltage of 9.9927 V (FS/2 3/2 LSBs) at V1. Adjust R2
until the ADC output code flickers between 0111 1111 1110 and
0111 1111 1111.
Negative Full-Scale Adjust
Apply a voltage of 9.9976 V (FS/2 + 1/2 LSB) at V1 and adjust
R2 until the ADC output code flickers between 1000 0000 0000
and 1000 0000 0001.
OFFSET AND FULL-SCALE ADJUSTMENT—
AD7875
Figure 13. Offset and Full-Scale Adjust Circuit
Similar to the AD7870, most of the DSP applications in which
the AD7875 is used do not require offset and full-scale
adjustment. For applications that do require adjustment, offset
error must be adjusted before full-scale (gain) error. This is
achieved by applying an input voltage of 0.61 mV (1/2 LSB) to
the ADC output code flickers between 0000 0000 0000 and
0000 0000 0001. For full-scale adjustment, apply an input
voltage of 4.9982 V (FS 3/2 LSBs) to V1 and adjust R2 until
the ADC output code flickers between 1111 1111 1110 and
1111 1111 1111.
Positive Full-Scale Adjust
Apply a voltage of 2.9978 V (FS/2 3/2 LSBs) at V1. Adjust R2
until the ADC output code flickers between 0111 1111 1110 and
0111 1111 1111.
Negative Full-Scale Adjust
Apply a voltage of 2.9993 V (FS/2 + 1/2 LSB) at V1 and adjust
R2 until the ADC output code flickers between 1000 0000 0000
and 1000 0000 0001.
OFFSET AND FULL-SCALE ADJUSTMENT—
AD7876
The offset and full-scale adjustment for the AD7876 is similar
to that just outlined for the AD7870. The trim procedure, for
those applications that do require adjustment, is as follows:
apply a voltage of 2.44 mV (1/2 LSB) at V1 and adjust the op
amp offset voltage until the ADC output code flickers between
1111 1111 1111 and 0000 0000 0000. Full-scale error can be
adjusted at either the first code transition (ADC negative full
scale) or the last code transition (ADC positive full scale). The
trim procedure for both case is as described in the following
sections (see Figure 13).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7870JPZ-REEL1 | 制造商:AD 制造商全称:Analog Devices 功能描述:LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs |
| AD7870KN | 功能描述:IC ADC 12BIT SAMPLING 3V 24-DIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率（每秒）:3M 数据接口:- 转换器数目:- 功率耗散（最大）:- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:- |
| AD7870KNZ | 功能描述:IC ADC 12BIT SAMPLING 3V 24-DIP 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 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7870KNZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs |
| AD7870KP | 制造商:Analog Devices 功能描述:ADC Single SAR 100ksps 12-bit Parallel/Serial 28-Pin PLCC 制造商:Analog Devices 功能描述:A/D Converter (A-D) IC |
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