Datasheet

ManualsBrandsANALOG DEVICES ManualsPMICsPMIC - system monitor Reset/power-on reset SC 70 4

Microprocessor Supervisory

Circuit in 4-Lead SC70

Data Sheet

ADM6711/ADM6713

Rev. B

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FEATURES

Specified over temperature

Low power consumption (12 μA)

Precision monitoring of 2.5 V, 3 V, 3.3 V,

and 5 V power supply voltages

Reset timeout period of 140 ms (minimum)

Manual reset input

Output stages

Push-pull

RESET

output (ADM6711)

Open-drain

RESET

output (ADM6713)

Reset assertion down to 1 V V

Power supply glitch immunity

4-lead SC70 package

APPLICATIONS

Microprocessor systems

Computers

Controllers

Intelligent instruments

Automotive systems

FUNCTIONAL BLOCK DIAGRAMS

ADM6711

GND

RESET

GENERATOR

240ms

DEBOUNCE

REF

3754-011

Figure 1.

03754-001

ADM6713

GND

RESET

DEBOUNCE

REF

RESET

GENERATOR

240ms

Figure 2.

GENERAL DESCRIPTION

The ADM6711/ADM6713 are reset generator circuits suitable

for use in microprocessor-based systems. They provide a reset

signal on power-up, power-down, and whenever the supply

voltage falls below a preset threshold. In addition, both parts

have a debounced manual reset input so that a reset signal can

also be initiated with an external switch or logic signal.

With six different reset threshold options available ranging from

2.32 V to 4.63 V, the ADM6711/ADM6713 are suitable for

monitoring 2.5 V, 3 V, 3.3 V, and 5 V supplies. A reset timeout

of at least 140 ms occurs when V

rises above the threshold.

This gives the supply voltage time to stabilize before the

microprocessor starts up.

The ADM6711 has a push-pull output, so no additional external

components are needed. The ADM6713 open-drain output

requires an external pull-up resistor that can be connected to

a voltage higher than V

, if desired.

The parts are highly reliable with accurate voltage references

and immunity to fast, negative-going transients on V

. Low

current consumption and space-efficient, 4-lead SC70 packaging

make the ADM6711/ADM6713 ideal for use in low power

portable applications.

RESET RESETMR

GND GND

ADM6711/

ADM6713

*ADM6713 ONLY

MICROPROCESSOR

SYSTEM

PULL-UP

03754-002

Figure 3. Typical Operating Circuit

Summary of content (12 pages)

PAGE 1
FUNCTIONAL BLOCK DIAGRAMS FEATURES ADM6711 VCC VREF MR RESET GND DEBOUNCE Figure 1. ADM6713 VCC RESET GENERATOR 240ms VREF APPLICATIONS Microprocessor systems Computers Controllers Intelligent instruments Automotive systems RESET GENERATOR 240ms 03754-011 Specified over temperature Low power consumption (12 μA) Precision monitoring of 2.5 V, 3 V, 3.
PAGE 2
ADM6711/ADM6713 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ..............................................7 Applications....................................................................................... 1 Circuit Description............................................................................8 Functional Block Diagrams...............................................
PAGE 3
Data Sheet ADM6711/ADM6713 SPECIFICATIONS VCC = full operating range; TA = TMIN to TMAX; VCC typ = 5 V for L/M models, 3.3 V for T/S models, 3 V for R models, and 2.5 V for Z models, unless otherwise noted. Table 1. Parameter SUPPLY VCC Operating Voltage Range Min Typ Max Unit Test Conditions/Comments 16 5.5 5.5 35 V V μA 12 30 μA 60 μA 60 μA TA = 0°C to 70°C TA = −40°C to +125°C VCC < 5.5 V, ADM671_L/M, TA = −40°C to +85°C VCC < 3.6 V, ADM671_R/S/T/Z, TA = −40°C to +85°C VCC < 5.
PAGE 4
ADM6711/ADM6713 Parameter RESET OPEN-DRAIN OUTPUT LEAKAGE CURRENT Data Sheet Min Typ MANUAL RESET (MR) Input Threshold Pull-Up Resistance Minimum Pulse width Glitch Immunity Reset Delay 0.7 VCC 10 1 20 100 200 Rev. B | Page 4 of 12 Max 1 Unit μA Test Conditions/Comments VCC > VTH, RESET deasserted 0.
PAGE 5
Data Sheet ADM6711/ADM6713 ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 3. RESET Threshold Options Table 2. Model RESET Threshold (V) Parameter VCC RESET (Push-Pull) RESET (Open-Drain) MR Input Current VCC, MR Output Current RESET Rate of Rise, VCC θJA Thermal Impedance, SC70 Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering, 10 sec) ADM671_L ADM671_M ADM671_T ADM671_S ADM671_R ADM671_Z 4.63 4.38 3.08 2.93 2.63 2.32 Rating −0.3 V to +6 V −0.
PAGE 6
ADM6711/ADM6713 Data Sheet GND 1 ADM6711/ ADM6713 4 VCC 3 MR TOP VIEW (Not to Scale) RESET 2 03754-003 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Figure 4. Pin Configuration Table 4. Pin Function Descriptions Pin No. 1 2 Mnemonic GND RESET 3 MR 4 VCC Description Ground Reference for All Signals (0 V). Active Low Logic Input. RESET remains low while VCC is below the reset threshold and remains low for 240 ms (typical) after VCC rises above the reset threshold. Manual Reset.
PAGE 7
Data Sheet ADM6711/ADM6713 TYPICAL PERFORMANCE CHARACTERISTICS 12 1.007 1.006 IDD @ VCC = 3V 6 4 0 –40 –20 0 20 30 50 03754-004 IDD @ VCC = 1V 2 70 85 100 1.005 1.004 1.003 1.002 1.001 1.000 0.999 0.998 0.997 03754-008 IDD (µA) 8 NORMALIZED RESET THRESHOLD IDD @ VCC = 5.5V 10 0.996 0.995 –40 120 –20 0 20 Figure 5. Supply Current vs.
PAGE 8
ADM6711/ADM6713 Data Sheet CIRCUIT DESCRIPTION MANUAL RESET INPUT The ADM6711/ADM6713 manual reset (MR) input allows the system operator to reset a system by means of an external manual switch. Alternatively, a logic signal from another digital circuit can be used to trigger a reset via the MR input. The ADM6713 open-drain RESET output is designed for use with an external pull-up resistor.
PAGE 9
Data Sheet ADM6711/ADM6713 OUTLINE DIMENSIONS 2.20 1.80 4 1 0.65 BSC 3 2.40 1.80 2 0.50 BSC 0.40 0.10 1.10 0.80 1.00 0.80 0.10 MAX COPLANARITY 0.10 0.30 0.15 *0.70 0.50 SEATING PLANE 0.18 0.10 0.30 0.10 072809-A 1.35 1.15 *PACKAGE OUTLINE CORRESPONDS IN FULL TO EIAJ SC82 EXCEPT FOR WIDTH OF PIN 2 AS SHOWN. Figure 11.
PAGE 10
ADM6711/ADM6713 Model 1 ADM6713TAKS-REEL7 ADM6713TAKSZ-REEL7 ADM6713SAKS-REEL ADM6713SAKSZ-REEL ADM6713SAKS-REEL7 ADM6713SAKSZ-REEL7 ADM6713RAKS-REEL ADM6713RAKSZ-REEL ADM6713RAKS-REEL7 ADM6713RAKSZ-REEL7 ADM6713ZAKS-REEL ADM6713ZAKSZ-REEL ADM6713ZAKS-REEL7 ADM6713ZAKSZ-REEL7 1 RESET Threshold (V) 3.08 3.08 2.93 2.93 2.93 2.93 2.63 2.63 2.63 2.63 2.32 2.32 2.32 2.
PAGE 11
Data Sheet ADM6711/ADM6713 NOTES Rev.