MOTOROLA MC33502P, MC33502DR2, MC33502D Datasheet

Order this document by MC33502/D

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  

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The MC33502 operational amplifier provides rail–to–rail operation on both the input and output. The output can swing within 50 mV of each rail. This rail–to–rail operation enables the user to make full use of the entire supply voltage range available. It is designed to work at very low supply voltages (1.0 V and ground), yet can operate with a supply of up to 7.0 V and ground. Output current boosting techniques provide high output current capability while keeping the drain current of the amplifier to a minimum.

• Low Voltage, Single Supply Operation (1.0 V and Ground to

7.0 V and Ground)

• High Input Impedance: Typically 40 fA Input Current

• Typical Unity Gain Bandwidth @ 5.0 V = 5.0 MHz, @ 1.0 V = 4.0 MHz

• High Output Current (I

• Output Voltage Swings within 50 mV of Both Rails @ 1.0 V

• Input Voltage Range Includes Both Supply Rails

• High Voltage Gain: 100 dB Typical @ 1.0 V

• No Phase Reversal on the Output for Over–Driven Input Signals

• Input Offset Trimmed to 0.5 mV Typical

• Low Supply Current (I

• 600 Ω Drive Capability

• Extended Operating Temperature Range (–40 to 105°C)

APPLICATIONS

• Single Cell NiCd/Ni MH Powered Systems

• Interface to DSP

• Portable Communication Devices

• Low Voltage Active Filters

• Telephone Circuits

• Instrumentation Amplifiers

• Audio Applications

• Power Supply Monitor and Control

• Compatible with VCX Logic

Inputs

= 50 mA @ 5.0 V, 10 mA @ 1.0 V)

= 1.2 mA/per Amplifier, Typical)

Simplified Block Diagram

Input

Stage

Buffer with 0 V

Level Shift

Base

Current

Boost

Output

Stage

Outputs



LOW VOLTAGE

RAIL–TO–RAIL DUAL

OPERATIONAL AMPLIFIER

SEMICONDUCTOR

TECHNICAL DATA

P SUFFIX

PLASTIC PACKAGE

CASE 626

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

PIN CONNECTIONS

Output 1

Inputs 1

18 2

(Dual, Top View)

Output 2

7 6

Inputs 2

Saturation

Offset

Voltage

Trim

This device contains 98 active transistors per amplifier.

This document contains information on a new product. Specifications and information herein are subject to change without notice.

MOTOROLA ANALOG IC DEVICE DATA

Detector

Base

Current

Boost

ORDERING INFORMATION

Operating

Device

MC33502P MC33502D

 Motorola, Inc. 1998 Rev 0

Temperature Range

TA = – 40° to +105°C

Package

Plastic DIP

SO–8

MAXIMUM RATINGS

ÁÁÁ

Rating Symbol Value Unit

Supply Voltage (VCC to VEE) ESD Protection Voltage at any Pin

Human Body Model

MC33502

ESD

7.0

2000

V V

Voltage at Any Device Pin Input Differential Voltage Range Common Mode Input Voltage Range Output Short Circuit Duration Maximum Junction Temperature Storage Temperature Range Maximum Power Dissipation

NOTES: 1. Power dissipation must be considered to ensure maximum junction temperature (TJ) is not

DC ELECTRICAL CHARACTERISTICS (V

exceeded.

2.ESD data available upon request.

IDR

CM t

stg

VS ±0.3 VCC to V VCC to V

(Note 1)

150

–65 to 150

(Note 1)

EE EE

V V V

°C °C

= 5.0 V, VEE = 0 V, VCM = VO = VCC/2, RL to VCC/2, TA = 25°C, unless

otherwise noted.)

Characteristic

Input Offset Voltage (VCM = 0 to VCC)

Symbol Min Typ Max Unit

VCC = 1.0 V

TA = 25°C –5.0 0.5 5.0 TA = –40° to 105°C –7.0 – 7.0

VCC = 3.0 V

TA = 25°C –5.0 0.5 5.0 TA = –40° to 105°C –7.0 – 7.0

VCC = 5.0 V

TA = 25°C –5.0 0.5 5.0 TA = –40° to 105°C –7.0 – 7.0

Input Offset Voltage Temperature Coefficient (RS = 50 Ω)

∆VIO/∆T

–

8.0

TA = –40° to 105°C Input Bias Current (VCC = 1.0 to 5.0 V) Common Mode Input Voltage Range Large Signal Voltage Gain

I IIB I V

ICR

VOL

–

VCC = 1.0 V (TA = 25°C)

RL = 10 kΩ 25 100 – RL = 1.0 kΩ 5.0 50 –

VCC = 3.0 V (TA = 25°C)

RL = 10 kΩ 50 500 – RL = 1.0 kΩ 25 100 –

VCC = 5.0 V (TA = 25°C)

RL = 10 kΩ 50 500 – RL = 1.0 kΩ 25 200 –

–

µV/°C

kV/V

MOTOROLA ANALOG IC DEVICE DATA

MC33502

ÁÁÁ

DC ELECTRICAL CHARACTERISTICS (continued) (V

= 5.0 V, VEE = 0 V, VCM = VO = VCC/2, RL to VCC/2, TA = 25°C, unless

otherwise noted.)

Characteristic UnitMaxTypMinSymbol

Output Voltage Swing, High (VID = ±0.2 V)

VCC = 1.0 V (TA = 25°C)

RL = 10 kΩ 0.9 0.95 – RL = 600 Ω 0.85 0.88 –

VCC = 1.0 V (TA = –40° to 105°C)

RL = 10 kΩ 0.85 – – RL = 600 Ω 0.8 – –

VCC = 3.0 V (TA = 25°C)

RL = 10 kΩ 2.9 2.93 – RL = 600 Ω 2.8 2.84 –

VCC = 3.0 V (TA = –40° to 105°C)

RL = 10 kΩ 2.85 – – RL = 600 Ω 2.75 – –

VCC = 5.0 V (TA = 25°C)

RL = 10 kΩ 4.9 4.92 – RL = 600 Ω 4.75 4.81 –

VCC = 5.0 V (TA = –40° to 105°C)

RL = 10 kΩ 4.85 – – RL = 600 Ω 4.7 – –

Output Voltage Swing, Low (VID = ±0.2 V)

VCC = 1.0 V (TA = 25°C)

RL = 10 kΩ 0.05 0.02 – RL = 600 Ω 0.1 0.05 –

VCC = 1.0 V (TA = –40° to 105°C)

RL = 10 kΩ 0.1 – – RL = 600 Ω 0.15 – –

VCC = 3.0 V (TA = 25°C)

RL = 10 kΩ 0.05 0.02 – RL = 600 Ω 0.1 0.08 –

VCC = 3.0 V (TA = –40° to 105°C)

RL = 10 kΩ 0.1 – – RL = 600 Ω 0.15 – –

VCC = 5.0 V (TA = 25°C)

RL = 10 kΩ 0.05 0.02 – RL = 600 Ω 0.15 0.1 –

VCC = 5.0 V (TA = –40° to 105°C)

RL = 10 kΩ 0.1 – – RL = 600 Ω 0.2 – –

Common Mode Rejection (Vin = 0 to 5.0 V) CMR 60 75 – dB

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–

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Output Short Circuit Current (Vin Diff = ±1.0 V)

VCC = 1.0 V

Source 6.0 13 26 Sink 10 13 26

VCC = 3.0 V

Source 15 32 60 Sink 40 64 140

VCC = 5.0 V

Source 20 40 140 Sink 40 70 140

Power Supply Current (Per Amplifier, VO = 0 V)

VCC = 1.0 V – 1.2 1.75

VCC = 3.0 V – 1.5 2.0

VCC = 5.0 V – 1.65 2.25

VCC = 1.0 V (TA = –40 to 105°C) – – 2.0

VCC = 3.0 V (TA = –40 to 105°C) – – 2.25

VCC = 5.0 V (TA = –40 to 105°C) – – 2.5

µV/V

MOTOROLA ANALOG IC DEVICE DATA

MC33502

ÁÁÁ

AC ELECTRICAL CHARACTERISTICS (V

Characteristic

Slew Rate (VS = ±2.5 V , VO = –2.0 to 2.0 V, RL = 2.0 kΩ, AV = 1.0)

= 5.0 V, VEE = 0 V, VCM = VO = VCC/2, TA = 25°C, unless otherwise noted.)

Symbol Min Typ Max Unit

SR Positive Slope 2.0 3.0 6.0 Negative Slope 2.0 3.0 6.0

Unity Gain Bandwidth

BW VCC = 1.0 V 3.0 4.0 6.0 VCC = 3.0 V 3.5 4.5 7.0 VCC = 5.0 V 4.0 5.0 8.0

Gain Margin (RL =10 kΩ, CL = 0 pF)

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Phase Margin (RL = 10 kΩ, CL = 0 pF)

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Channel Separation (f = 1.0 Hz to 20 kHz, RL = 600 Ω)

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Power Bandwidth (VO = 4.0 Vpp, RL = 1.0 kΩ, THD ≤1.0%)

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Total Harmonic Distortion (VO = 4.5 Vpp, RL = 600 Ω, AV = 1.0)

ÁÁÁ

THD

–

ÁÁ

–

ÁÁ

–

ÁÁ

–

ÁÁ

6.5

ÁÁ

120

ÁÁ

200

ÁÁ

f = 1.0 kHz – 0.004 – f = 10 kHz – 0.01 –

Differential Input Resistance (VCM = 0 V) Differential Input Capacitance (VCM = 0 V) Equivalent Input Noise Voltage (VCC = 1.0 V, VCM = 0 V, VEE = Gnd,

– –

>1.0

2.0

RS = 100 Ω) f = 1.0 kHz – 30 – f = 10 kHz – 60 –

–

ÁÁ

–

ÁÁ

–

ÁÁ

–

ÁÁ

– –

V/µs

MHz

ÁÁ

Deg

ÁÁ

kHz

ÁÁ

terraΩ

nV/√Hz

IN–

Figure 1. Representative Block Diagram

IN+

Offset

Voltage

Trim

Output

Voltage

Saturation

Clamp

Detector

Body

Bias

Out

MOTOROLA ANALOG IC DEVICE DATA

MC33502

GENERAL INFORMATION

The MC33502 dual operational amplifier is unique in its ability to provide 1.0 V rail–to–rail performance on both the input and output by using a SMARTMOS process. The amplifier output swings within 50 mV of both rails and is able to provide 50 mA of output drive current with a 5.0 V supply, and 10 mA with a 1.0 V supply. A 5.0 MHz bandwidth and a slew rate of 3.0 V/µs is achieved with high speed depletion mode NMOS (DNMOS) and vertical PNP transistors. This device is characterized over a temperature range of –40°C to 105°C.

CIRCUIT INFORMATION

Input Stage

One volt rail–to–rail performance is achieved in the MC33502 at the input by using a single pair of depletion mode NMOS devices (DNMOS) to form a differential amplifier with a very low input current of 40 fA. The normal input common mode range of a DNMOS device, with an ion implanted negative threshold, includes ground and relies on the body effect to dynamically shift the threshold to a positive value as the gates are moved from ground towards the positive supply. Because the device is manufactured in a p–well process, the body effect coefficient is sufficiently large to ensure that the input stage will remain substantually saturated when the inputs are at the positive rail. This also applies at very low supply voltages. The 1.0 V rail–to–rail input stage consists of a DNMOS differential amplifier, a folded cascode, and a low voltage balanced mirror. The low voltage cascoded balanced mirror provides high 1st stage gain and base current cancellation without sacrificing signal integrity . Also, the input of fset voltage is trimmed to less than

1.0 mV because of the limited available supply voltage. The body voltage of the input DNMOS differential pair is internally trimmed to minimize the input offset voltage. A common mode feedback path is also employed to enable the offset voltage to track over the input common mode voltage. The total operational amplifier quiescent current drop is

1.3 mA/amp.

Output Stage

An additional feature of this device is an “on demand” base current cancellation amplifier. This feature provides base drive to the output power devices by making use of a buffer amplifier to perform a voltage–to–current conversion. This is done in direct proportion to the load conditions. This “on demand” feature allows these amplifiers to consume only a few micro–amps of current when the output stage is in its quiescent mode. Yet it provides high output current when required by the load. The rail–to–rail output stage current boost circuit provides 50 mA of output current with a 5.0 V supply (For a 1.0 V supply output stage will do 10 mA) enabling the operational amplifier to drive a 600 Ω load. A buffer is necessary to isolate the load current effects in the output stage from the input stage. Because of the low voltage conditions, a DNMOS follower is used to provide an essentially zero voltage level shift. This buffer isolates any load current changes on the output stage from loading the input stage. A high speed vertical PNP transistor provides excellent frequency performance while sourcing current. The operational amplifier is also internally compensated to provide a phase margin of 60 degrees. It has a unity gain of

5.0 MHz with a 5.0 V supply and 4.0 MHz with a 1.0 V supply .

LOW VOLTAGE OPERATION

The MC33502 will operate at supply voltages from 0.9 to

7.0 V and ground. When using the MC33502 at supply voltages of less than 1.2 V, input offset voltage may increase slightly as the input signal swings within approximately 50 mV of the positive supply rail. This effect occurs only for supply voltages below 1.2 V, due to the input depletion mode MOSFETs starting to transition between the saturated to linear region, and should be considered when designing high side dc sensing applications operating at the positive supply rail. Since the device is rail–to–rail on both input and output, high dynamic range single battery cell applications are now possible.

MOTOROLA ANALOG IC DEVICE DATA

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