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参数资料
| 型号： | ADE7755ARSZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METERING 1PHASE 24SSOP |
| 标准包装： | 59 |
| 输入阻抗： | 390 千欧 |
| 测量误差： | 0.1% |
| 电压 - 高输入/输出： | 2.4V |
| 电压 - 低输入/输出： | 0.8V |
| 电流 - 电源： | 3mA |
| 电源电压： | 4.75 V ~ 5.25 V |
| 测量仪表类型： | 单相 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 管件 |
| 配用： | EVAL-ADE7755ZEB-ND - BOARD EVALUATION FOR AD7755 |
ADE7755
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
DV DD 1
AC/DC 2
AV DD 3
NC 4
24
23
22
21
F1
F2
CF
DGND
V1P 5
V1N 6
V2N 7
V2P 8
RESET 9
REF IN/OUT 10
AGND 11
SCF 12
ADE7755
TOP VIEW
(Not to Scale)
20
19
18
17
16
15
14
13
REVP
NC
CLKOUT
CLKIN
G0
G1
S0
S1
NC = NO CONNECT
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
1
2
3
4, 19
5, 6
7, 8
9
10
11
12
13, 14
15, 16
Mnemonic
DV DD
AC/DC
AV DD
NC
V1P, V1N
V2N, V2P
RESET
REF IN/OUT
AGND
SCF
S1, S0
G1, G0
Description
Digital Power Supply. This pin provides the supply voltage for the digital circuitry in the ADE7755. The supply
voltage should be maintained at 5 V ± 5% for specified operation. This pin should be decoupled with a 10 μF
capacitor in parallel with a ceramic 100 nF capacitor.
High-Pass Filter Select. This logic input is used to enable the HPF in Channel 1 (current channel). A Logic 1 on
this pin enables the HPF. The associated phase response of this filter is internally compensated over a
frequency range of 45 Hz to 1 kHz. The HPF should be enabled in power metering applications.
Analog Power Supply. This pin provides the supply voltage for the analog circuitry in the ADE7755. The supply
should be maintained at 5 V ± 5% for specified operation. Every effort should be made to minimize power
supply ripple and noise at this pin by the use of proper decoupling. This pin should be decoupled to AGND
with a 10 μF capacitor in parallel with a ceramic 100 nF capacitor.
No Connect.
Analog Inputs for Channel 1 (Current Channel). These inputs are fully differential voltage inputs with a
maximum differential signal level of ±470 mV for specified operation. Channel 1 also has a PGA, and the gain
selections are outlined in Table 5. The maximum signal level at these pins is ±1 V with respect to AGND. Both
inputs have internal ESD protection circuitry. An overvoltage of ±6 V can be sustained on these inputs without
risk of permanent damage.
Negative and Positive Inputs for Channel 2 (Voltage Channel). These inputs provide a fully differential input pair
with a maximum differential input voltage of ±660 mV for specified operation. The maximum signal level at
these pins is ±1 V with respect to AGND. Both inputs have internal ESD protection circuitry, and an overvoltage
of ±6 V can be sustained on these inputs without risk of permanent damage.
Reset Pin. A logic low on this pin holds the ADCs and digital circuitry in a reset condition.
Bringing this pin logic low clears the ADE7755 internal registers.
This pin provides access to the on-chip voltage reference. The on-chip reference has a nominal value of
2.5 V ± 8% and a typical temperature coefficient of 30 ppm/°C. An external reference source may also be
connected at this pin. In either case, this pin should be decoupled to AGND with a 1 μF ceramic capacitor and
a 100 nF ceramic capacitor.
This pin provides the ground reference for the analog circuitry in the ADE7755, that is, the ADCs and reference.
This pin should be tied to the analog ground plane of the PCB. The analog ground plane is the ground reference
for all analog circuitry, for example, antialiasing filters and current and voltage transducers. For good noise
suppression, the analog ground plane should be connected to the digital ground plane at one point only. A
star ground configuration helps to keep noisy digital currents away from the analog circuits.
Select Calibration Frequency. This logic input is used to select the frequency on the calibration output, CF.
Table 8 shows how the calibration frequencies are selected.
These logic inputs are used to select one of four possible frequencies for the digital-to-frequency conversion.
This offers the designer greater flexibility when designing the energy meter. See the Selecting a Frequency for
an Energy Meter Application section.
These logic inputs are used to select one of four possible gains for Channel 1, that is, V1. The possible gains
are 1, 2, 8, and 16. See the Analog Inputs section.
Rev. A | Page 6 of 20
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相关代理商/技术参数 |
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|---|---|
| ADE7755ARSZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Energy Metering IC with Pulse Output |
| ADE7755ARSZRL | 功能描述:IC ENERGY METERING 1PHASE 24SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
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| ADE7756AN | 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin PDIP |
| ADE7756AN-REF | 制造商:AD 制造商全称:Analog Devices 功能描述:Active Energy Metering IC with Serial Interface |
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