AD8451ASTZ datasheet(9/33 Pages) AD

Numer części	AD8451ASTZ

Szczegółowy opis	Low Cost, Precision Analog Front End and Controller for Battery Test/Formation Systems

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AD8451

Data Sheet

Pin No.

Mnemonic

Input/Output1

Description

36, 61, 72

AVEE

N/A

Analog Negative Supply Pins. The default voltage is −15 V.

37

BVMEA

Output

Voltage Sense Difference Amplifier Output.

38, 57, 70

AVCC

N/A

Analog Positive Supply Pins. The default voltage is 15 V.

39

MODE

Input

TTL Compliant Logic Input Selects Charge or Discharge Mode. Low =

discharge, high = charge.

45

DGND

N/A

Digital Ground Pin.

47

DVCC

N/A

Digital Supply. The default voltage is 5 V.

49

VSET

Input

Target Voltage for the Voltage Sense Control Loop.

50

VSETBF

Output

Buffered Voltage VSET.

51

VVP0

Input

Noninverting Input of the Voltage Sense Integrator for Discharge Mode.

53

VVE0

Input

Inverting Input Voltage for the Voltage Sense Integrator for Discharge Mode.

54

VVE1

Input

Inverting Input of the Voltage Sense Integrator for Charge Mode.

56, 62

VINT

Output

Minimum Output of the Voltage Sense and Current Sense Integrator Amplifiers.

58

VCLN

Input

Low Clamp Voltage for VCTRL.

59

VCTRL

Output

Controller Output Voltage. Connect this pin to the input of the PWM controller

(for example, the COMP pin of the ADP1972).

60

VCLP

Input

High Clamp Voltage for VCTRL.

64

IVE1

Input

Inverting Input of the Current Sense Integrator for Charge Mode.

65

IVE0

Input

Inverting Input of the Current Sense Integrator for Discharge Mode.

67

ISET

Input

Target Voltage for the Current Sense Control Loop.

68

ISREFB

Output

Buffered Voltage ISREFL.

71

ISMEA

Output

Current Sense Instrumentation Amplifier Output.

74

ISREFH

Input

Reference Input for the Current Sense Amplifier. To level shift the current sense

instrumentation amplifier output by approximately 20 mV, connect this pin to

the VREF pin. Otherwise, connect this pin to the ISREFL pin.

76

ISREFL

Input

Reference Input for the Current Sense Amplifier. The default connection is to

ground.

77

ISREFLS

Input

Kelvin Sense Pin for the ISREFL Pin.

1

N/A means not applicable.

Rev. 0 | Page 8 of 32

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