AD4080 PCN Data Sheet Revision

Overview

This document details a Product Change Notification (PCN) regarding revisions to the AD4080 data sheet. The changes affect specific DC performance parameters and digital input voltage thresholds.

Change No. 1: DC Performance - Gain Error Drift

This section compares the DC performance specifications, specifically the typical change in Gain Error Drift, between Revision A (Old) and Revision B (New) of the AD4080 data sheet.

From Rev. A (Old)

Parameter	Condition	Value	Unit
No Missing Codes		20	Bits
Differential Nonlinearity (DNL)		±0.5	LSB
Integral Nonlinearity (INL)		±0.99	LSB
Transition Noise		±4, ±8	ppm
Gain Error	TA = 25°C	6.9	LSB RMS
Gain Error Drift	TA = 25°C	0.01	%FS
Gain Error Drift	TA = -40°C to +85°C	0.05	ppm/°C
Zero Error	TA = 25°C	15	μV
Zero Error Drift	TA = -40°C to +85°C	0.05	ppm/°C
Power Supply Rejection	VDD33 = 3.3 V ±5%	-89	dB
Power Supply Rejection	VDD11 = 1.1 V ±5%	-68	dB
Low Frequency Noise	Bandwidth = 0.1 Hz to 10 Hz	174	nV RMS

To Rev. B (New)

Parameter	Condition	Value	Unit
No Missing Codes		20	Bits
Differential Nonlinearity (DNL)		±0.5	LSB
Integral Nonlinearity (INL)		±0.99	LSB
Transition Noise		±4, ±8	ppm
Gain Error	TA = 25°C	6.9	LSB RMS
Gain Error Drift	TA = 25°C	0.01	%FS
Gain Error Drift	TA = -40°C to +85°C	0.2	ppm/°C
Zero Error	TA = 25°C	15	μV
Zero Error Drift	TA = -40°C to +85°C	0.05	ppm/°C
Power Supply Rejection	VDD33 = 3.3V ± 5%	-89	dB
Power Supply Rejection	VDD11 = 1.1V ±5%	-68	dB
Low Frequency Noise	Bandwidth = 0.1Hz to 10Hz	174	nV RMS

Description of Change: The specification for Gain Error Drift under the condition TA = -40°C to +85°C has been updated from 0.05 ppm/°C to 0.2 ppm/°C.

Change No. 2: Digital Inputs - VIH Min Change

This section compares the digital input specifications, focusing on the minimum Input High Voltage (VIH), between Revision A (Old) and Revision B (New) of the AD4080 data sheet.

From Rev. A (Old)

Parameter / Logic Level	Value	Unit
VDD11 supply domain inputs	0 to 2.5	V
Input Voltage Tolerance	±0.36	x VDD11
Logic Levels - Input Low Voltage (VIL)	0.36	x VDD11
Logic Levels - Input High Voltage (VIH)	0.73	x VDD11
Input Low Current (IIL)	-1 to +1	μA
Input High Current (IIH)	-1 to +1	μA
Input Pin Capacitance	4.5	pF

Parameter / Logic Level	Value	Unit
IOVDD supply domain inputs	0 to 2.5	V
Input Voltage Tolerance	±0.36	x IOVDD
Logic Levels - Input Low Voltage (VIL)	0.36	x IOVDD
Logic Levels - Input High Voltage (VIH)	0.73	x IOVDD
Input Low Current (IIL)	-1 to +1	μA
Input High Current (IIH)	-1 to +1	μA
Input Pin Capacitance	4.5	pF

To Rev. B (New)

Parameter / Logic Level	Value	Unit
VDD11 supply domain inputs	0 to 2.5	V
Input Voltage Tolerance	±0.36	x VDD11
Logic Levels - Input Low Voltage (VIL)	0.36	x VDD11
Logic Levels - Input High Voltage (VIH)	0.92	x VDD11
Input Low Current (IIL)	-1 to +1	μA
Input High Current (IIH)	-1 to +1	μA
Input Pin Capacitance	4.5	pF

Parameter / Logic Level	Value	Unit
IOVDD supply domain inputs	0 to 2.5	V
Input Voltage Tolerance	±0.36	x IOVDD
Logic Levels - Input Low Voltage (VIL)	0.36	x IOVDD
Logic Levels - Input High Voltage (VIH)	0.92	x IOVDD
Input Low Current (IIL)	-1 to +1	μA
Input High Current (IIH)	-1 to +1	μA
Input Pin Capacitance	4.5	pF

Description of Change: The minimum Input High Voltage (VIH) specification has been updated. For VDD11 supply domain inputs, VIH is now 0.92 x VDD11 (previously 0.73 x VDD11). For IOVDD supply domain inputs, VIH is now 0.92 x IOVDD (previously 0.73 x IOVDD).

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Overview

Change No. 1: DC Performance - Gain Error Drift

From Rev. A (Old)

To Rev. B (New)

Change No. 2: Digital Inputs - VIH Min Change

From Rev. A (Old)

To Rev. B (New)

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