MICREL MIC7122BMM Datasheet

MIC7122 MicrelMIC7122 Micrel

MIC7122

Rail-to-Rail Dual Op Amp

Preliminary Information

General Description

The MIC7122 is a dual high-performance CMOS operational
amplifier featuring rail-to-rail inputs and outputs.

The input common-mode range extends beyond the rails by
300mV, and the output voltage swings to within 150µV of both
rails when driving a 100kΩ load.

The amplifiers operate from 2.2V to 15V and are fully speci­fied at 2.2V, 5V, and 15V. Gain bandwidth and slew rate are
750kHz and 0.7V/µs, respectively at 2.2V supply.

The MIC7122 is available in the MM8™ 8-lead MSOP pack­age.

Pin Configuration

Features

• Small footprint MSOP-8 package

• 350µA supply current per op amp at 2.2V supply

• Guaranteed 2.2V, 5V, and 15V performance

• 750kHz gain-bandwidth product at 2.2V supply

• 0.01% total harmonic distortion at 1kHz (15V, 2kΩ)

• Drives 200pF at 5V and greater supply voltages

Applications

• Battery-powered instrumentation

• PCMCIA, USB peripherals

• Portable computers and PDAs

Ordering Information

Part Number Temperature Range Package

MIC7122BMM –40°C to +85°C MSOP-8

OUT A

IN A–
IN A+

V–

1
2
3
4

8
7
6
5

V+
OUT B
INB–
INB+

MSOP-8 (MM)

Pin Description

Pin Number Pin Name Pin Function

1 / 7 OUTA / OUTB Amplifier Outputs
2 / 6 INA– / INB– Inverting Inputs
3 / 5 INA+ / INB+ Noninverting Inputs

4 V– Negative Supply: Negative supply for split supply application or ground for

8 V+ Positive Supply

single supply applications.

1
2

A

3
4

8
7
6

B

5

MM8 is a trademark of Micrel, Inc.

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com

March 1999 1 MIC7122

MIC7122 Micrel

Absolute Maximum Ratings (Note 1)

Supply Voltage (VV+ – VV–)........................................16.5V

Differential Input Voltage (V
I/O Pin Voltage (VIN, V

OUT

.............................................V

Junction Temperature (TJ) ...................................... +150°C

Storage Temperature ...............................–65°C to +150°C

– V

IN+

), Note 3

) .......................±10V

IN–

+ 0.3V to V

V+

V–

– 0.3V

Operating Ratings (Note 2)

Supply Voltage (VV+ – VV–).............................. 2.2V to 15V

Junction Temperature (TJ) ......................... –40°C to +85°C

Max. Junction Temperature (T

Max. Power Dissipation............................................ Note 4

Package Thermal Resistance, Note 5

MSOP-8 (θJA)....................................................200°C/W

), Note 4 .........+125°C

J(max)

Lead Temperature (soldering, 10 sec.) .....................260°C

ESD, Note 6..............................................................1000V

DC Electrical Characteristics (2.2V)

VV+ = +2.2V, VV– = 0V, VCM = V

Symbol Parameter Condition Min Typ Max Units

V

OS

TCV
I

B

I

OS

R

IN

OS

Input Offset Voltage 0.5 9 mV
Input Offset Voltage Average Drift 3.0 µV/°C
Input Bias Current 1.0 10 pA

Input Offset Current 0.5 5 pA

Input Resistance >1 TΩ
CMRR Common-Mode Rejection Ratio -0.3V ≤ VCM ≤ 2.5V, Note 9 45 65 dB
±PSRR Power Supply Rejection Ratio VV+ = VV– = 1.1V to 2.5V, V
C

IN

V

O

I

SC

I

S

Common-Mode Input Capacitance 3 pF

Output Swing output high, RL = 100k, 0.15 1 mV

Output Short Circuit Current sinking or sourcing, Note 8 20 50 mA

Supply Current both amplifiers 0.7 1.6 mA

= VV+/2; RL = 1MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C

OUT

= VCM = 0 60 85 dB

OUT

specified as VV+ – V
output low, R

output high, R
specified as VV+ – V

output low, R

output high, R
specified as VV+ – V

output low, R

OUT

= 100k 0.15 1 mV

L

= 2k 8 33 mV

L

OUT

= 2k 8 33 mV

L

= 600Ω 26 110 mV

L

OUT

= 600Ω 26 110 mV

L

; Note 7

; unless noted

64 500 pA

32 250 pA

1 mV

1 mV

50 mV

50 mV

165 mV

165 mV

AC Electrical Characteristics (2.2V)

VV+ = 2.2V, VV– = 0V, VCM = V

Symbol Parameter Condition Min Typ Max Units

SR Slew Rate 0.7 V/µs
GBW Gain-Bandwidth Product 750 kHz

φ

m

G

m

Phase Margin CL = 0pF 80 °

Gain Margin 10 dB

Interamplifier Isolation Note 12 90 dB

MIC7122 2 March 1999

= VV+/2; RL = 1MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C

OUT

CL = 200pF 40 °

; Note 7

; unless noted

MIC7122 Micrel

DC Electrical Characteristics (5V)

VV+ = +5.0V, VV– = 0V, VCM = 1.5V, V

Symbol Parameter Condition Min Typ Max Units

V

OS

TCV
I

B

I

OS

R

IN

OS

Input Offset Voltage 0.5 9 mV
Input Offset Voltage Average Drift 3.0 µV/°C
Input Bias Current 1.0 10 pA

Input Offset Current 0.5 5 pA

Input Resistance >1 TΩ
CMRR Common-Mode Rejection Ratio -0.3V ≤ VCM ≤ 5.3V, Note 9 55 75 dB
±PSRR Power Supply Rejection Ratio VV+ = VV– = 2.5V to 7.5V, V
C
V

I
I

IN
OUT

SC
S

Common-Mode Input Capacitance 3 pF

Output Swing output high, RL = 100k 0.3 1.0 mV

Output Short Circuit Current sinking or sourcing, Note 8 40 140 mA

Supply Current both amplifiers 0.8 1.8 mA

= VV+/2; RL = 1MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; Note 7; unless noted

OUT

64 500 pA

32 250 pA

= VCM = 0 55 100 dB

OUT

specified as VV+ – V
output low, R

= 100k 0.3 1.0 mV

L

OUT

1.5 mV

1.5 mV

output high, R
specified as VV+ – V

output low, R

= 2k 13 50 mV

L

OUT

= 2k 13 50 mV

L

75 mV

75 mV

output high, R
specified as VV+ – V

output low, R

= 600Ω 40 165 mV

L

OUT

= 600Ω 40 165 mV

L

250 mV

250 mV

AC Electrical Characteristics (5V)

VV+ = 5V, VV– = 0V, VCM = 1.5V, V

Symbol Parameter Condition Min Typ Max Units

THD Total Harmonic Distortion f = 1kHz, A

SR Slew Rate 0.6 V/µs
GBW Gain-Bandwidth Product 465 kHz

φ

m

G

m

Phase Margin CL = 0pF 85 °

Gain Margin 10 dB

Interamplifier Isolation Note 12 90 dB

= VV+/2; RL = 1MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C

OUT

= –2, 0.05 %

RL = 2kΩ, V

V

OUT

= 4.0 V

PP

CL = 200pF 40 °

; Note 7

; unless noted

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