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參數(shù)資料
| 型號： | ADE7757AARZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | LEAD FREE, MS-012AC, SOIC-16 |
| 文件頁數(shù)： | 22/24頁 |
| 文件大?。?/td> | 391K |
| 代理商： | ADE7757AARZ |
Preliminary Technical Data
ADE7757A
Rev. PrE | Page 7 of 24
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
VDD 1
V2P
2
V2N
3
V1N
4
F1
16
F2
15
CF
14
DGND
13
V1P
5
REVP
12
AGND
6
RCLKIN
11
REFIN/OUT 7
S0
10
SCF
8
S1
9
ADE7757A
TOP VIEW
(Not to Scale)
05330-003
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
VDD
Power Supply. This pin provides the supply voltage for the circuitry in the ADE7757A. The supply voltage
should be maintained at 5 V ± 5% for specified operation. This pin should be decoupled with a 10 F
capacitor in parallel with a ceramic 100 nF capacitor.
2, 3
V2P, V2N
Analog Inputs for Channel V2 (Voltage Channel). These inputs provide a fully differential input pair. The
maximum differential input voltage is ±165 mV for specified operation. Both inputs have internal ESD
protection circuitry; an overvoltage of ±6 V can be sustained on these inputs without risk of permanent
damage.
4, 5
V1N, V1P
Analog Inputs for Channel V1 (Current Channel). These inputs are fully differential voltage inputs with a
maximum signal level of ±30 mV with respect to the V1N pin for specified operation. Both inputs have
internal ESD protection circuitry and, in addition, an overvoltage of ±6 V can be sustained on these inputs
without risk of permanent damage.
6
AGND
This pin provides the ground reference for the analog circuitry in the ADE7757A, 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, such as antialiasing filters, current and voltage sensors, and so forth.
For accurate noise suppression, the analog ground plane should be connected to the digital ground plane at
only one point. A star ground configuration helps to keep noisy digital currents away from the analog
circuits.
7
REFIN/OUT
This pin provides access to the on-chip voltage reference. The on-chip reference has a nominal value of 2.45 V
and a typical temperature coefficient of 20 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 F tantalum capacitor and a 100 nF
ceramic capacitor. The internal reference cannot be used to drive an external load.
8
SCF
Select Calibration Frequency. This logic input is used to select the frequency on the calibration output CF.
Table 7 shows calibration frequencies selection.
9, 10
S1, S0
These logic inputs are used to select one of four possible frequencies for the digital-to-frequency conversion.
With this logic input, designers have greater flexibility when designing an energy meter. See the Selecting a
Frequency for an Energy Meter Application section.
11
RCLKIN
To enable the internal oscillator as a clock source to the chip, a precise low temperature drift resistor at a
nominal value of 6.2 k must be connected from this pin to DGND.
12
REVP
This logic output goes high when negative power is detected, such as when the phase angle between the
voltage and current signals is greater than 90°. This output is not latched and is reset when positive power is
once again detected. The output goes high or low at the same time that a pulse is issued on CF.
13
DGND
This pin provides the ground reference for the digital circuitry in the ADE7757A, that is, the multiplier, filters,
and digital-to-frequency converter. This pin should be tied to the digital ground plane of the PCB. The digital
ground plane is the ground reference for all digital circuitry, for example, counters (mechanical and digital),
MCUs, and indicator LEDs. For accurate noise suppression, the analog ground plane should be connected to
the digital ground plane at one point only—a star ground.
14
CF
Calibration Frequency Logic Output. The CF logic output provides instantaneous real power information. This
output is intended for calibration purposes (also see the SCF pin description).
15, 16
F2, F1
Low Frequency Logic Outputs. F1 and F2 supply average real power information. The logic outputs can be
used to directly drive electromechanical counters and 2-phase stepper motors. See the Transfer Function
section.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| ADE7757ARN | 制造商:Rochester Electronics LLC 功能描述:ENERGY METER IC W/INTEGRATED OSCILLATOR - Bulk 制造商:Analog Devices 功能描述:IC ENERGY METER |
| ADE7757ARN-REF | 制造商:Analog Devices 功能描述:REF BOARD ENERGY MTR W/INTGRATED OSCIL. - Rail/Tube |
| ADE7757ARNRL | 制造商:Analog Devices 功能描述:IC ENERGY METERING 16-SOIC TR |
| ADE7757ARNZ | 功能描述:IC ENERGY METERING 1PHASE 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測量 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:* |
| ADE7757ARNZRL | 功能描述:IC ENERGY METERING 1PHASE 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測量 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:* |
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