Datasheet

UNISONIC TECHNOLOGIES CO., LTD
ULV1012
Preliminary
CMOS IC
ANALOG SERIES:
PRE-AMPLIFIED IC'S FOR
HIGH GAIN 2-WIRE
MICROPHONES

6
DESCRIPTION
4
1
The UTC ULV1012 is high gain, high impedance per-amplifier
which is designed to replace the JFET amplifier currently being
used. The UTC ULV1012 audio amplifiers are specified to operate
over a 2.2V to 5.0V supply voltage range with fixed gains of 7.8dB,
15.6dB, 20.9dB, and 23.8dB. The devices offer excellent THD, gain
accuracy and temperature stability as compared to a JFET
microphone.
The UTC ULV1012 series is ideally suited for applications
requiring high signal integrity in the presence of ambient or RF
noise, such as in cellular communications.
The UTC ULV1012 suited for use in headsets, mobile
communications, automotive accessories, PDAs, accessory
microphone products and telephone Electret Condenser
Microphones (ECM).

5
2
3
SOT-26
FEATURES
* Typical ULV1012-15, 2.2V Supply, RL=2.2kΩ, C=2.2μF,
VIN=18mVPP, Unless Otherwise Specified
* Supply Voltage: 2V ~ 5V
* Supply Current: <180μA
* Voltage Gain
– ULV1012-07: 7.8dB
– ULV1012-15: 15.6dB
– ULV1012-20: 20.9dB
– ULV1012-25: 23.8dB
* Temperature Range: −40°C~85°C

ORDERING INFORMATION
Ordering Number
ULV1012G-xx-AG6-R
www.unisonic.com.tw
Copyright © 2016 Unisonic Technologies Co., Ltd
Package
SOT-26
Packing
Tape Reel
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CMOS IC
MARKING INFORMATION
PACKAGE
SOT-26

Preliminary
VOLTAGE GAIN
07:
15:
20:
25:
MARKING
7.8dB
15.6dB
20dB
23.8dB
PIN CONFIGURATION
1
6
INPUT
GND 2
5
GND
OUTPUT 3
4
NC
NC
Note: Pin numbers are referenced to package marking text orientation.
The actual physical placement of the package marking will vary slightly from part to part.
The package will designate the date code and will vary considerably. Package marking does not correlate to
device type in any way.

PIN DESCRIPTION
PIN NO.
1, 4
2, 5
3
6
PIN NAME
NC
GND
OUTPUT
INPUT
DESCRIPTION
Ground
Output Voltage
Input Voltage
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
Preliminary
CMOS IC
BLOCK DIAGRAM
3
INPUT
OUTPUT
-
6
+
-
+
2/5 GND
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
Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING (Note 1)
PARAMETER
SYMBOL
RATINGS
UNIT
VDD-GND
VDD
5.5
V
Human Body Model
2500
V
ESD Tolerance (Note 2)
ESD
Machine Model
250
V
Junction Temperature (Note 3)
TJ
150
°C
Storage Temperature Range
TSTG
-65 ~ +150
°C
Mounting Temperature Infrared or Convection (20 sec.)
235
°C
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied. For
ensured specifications and the test conditions, see the 5V Electrical Characteristics.
2. Human Body Model (HBM) is 1.5kΩ in series with 100pF.
3. The maximum power dissipation is a function of TJ(MAX), θJA and TA. The maximum allowable power
dissipation at any ambient temperature is PD=(TJ(MAX)-TA)/θJA. All numbers apply for packages soldered
directly into a PC board.
Supply Voltage

OPERATING RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VDD
2~5
V
Temperature Range
TJ
-40 ~ +85
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied. For ensured
specifications and the test conditions, see the 5V Electrical Characteristics.

2.2V ELECTRICAL CHARACTERISTICS (Note 1)
(Unless otherwise specified, all limits are specified for TJ=25°C, VDD=2.2V, VIN=18mV, RL=2.2kΩ and C=2.2μF.
Boldface limits apply at the temperature extremes.)
MIN
TYP
MAX
UNIT
PARAMETER
SYMBOL
TEST CONDITIONS
(Note 2) (Note 3) (Note 2)
139
250
μA
ULV1012-07
300
μA
180
300
μA
ULV1012-15
325
μA
Supply Current
IDD
VIN=GND
160
250
μA
ULV1012-20
300
μA
141
250
μA
ULV1012-25
300
μA
ULV1012-07
59
dB
f=1kHz,
ULV1012-15
60
dB
Signal To Noise Ratio
SNR VIN=18mV,
ULV1012-20
61
dB
A-Weighted
ULV1012-25
61
dB
ULV1012-07
170
mVPP
f=1kHz and ULV1012-15
100
mVPP
Max Input Signal
VIN
THD+N<1% ULV1012-20
50
mVPP
ULV1012-25
28
mVPP
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
Preliminary
CMOS IC
2.2V ELECTRICAL CHARACTERISTICS (Cont.)
MIN
TYP
MAX
UNIT
(Note 2) (Note 3) (Note 2)
1.65
1.90
2.03
V
ULV1012-07
1.54
2.09
V
1.54
1.81
1.94
V
ULV1012-15
1.48
2.00
V
Output Voltage
VOUT VIN=GND
1.65
1.85
2.03
V
ULV1012-20
1.55
2.13
V
1.65
1.90
2.02
V
ULV1012-25
1.49
2.18
V
Lower −3dB Roll Off Frequency
fLOW RSOURCE=50Ω
65
Hz
Upper −3dB Roll Off Frequency
fHIGH RSOURCE=50Ω
95
kHz
ULV1012-07
-96
dBV
ULV1012-15
-89
dBV
Output Noise
en
A-Weighted
ULV1012-20
-84
dBV
ULV1012-25
-82
dBV
ULV1012-07
0.10
%
f=1kHz,
ULV1012-15
0.09
%
Total Harmonic Distortion
THD
VIN=18mV
ULV1012-20
0.12
%
ULV1012-25
0.15
%
Input Capacitance
CIN
2
pF
Input Impedance
ZIN
>1000
GΩ
6.4
7.8
9.5
dB
ULV1012-07
5.5
10.0
dB
14.0
15.6
16.9
dB
ULV1012-15
13.1
17.5
f=1kHz,
dB
Gain
AV
RSOURCE=50Ω
19.5
20.9
22.0
dB
ULV1012-20
17.4
23.3
dB
22.5
23.8
25.0
dB
ULV1012-25
21.4
25.7
dB
Notes: 1. Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing
conditions result in very limited self-heating of the device such that TJ=TA. No specification of parametric
performance is indicated in the electrical tables under conditions of internal self-heating where TJ>TA.
2. All limits are specified by design or statistical analysis.
3. Typical values represent the most likely parametric norm.
PARAMETER
SYMBOL
TEST CONDITIONS
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Preliminary
CMOS IC
5V ELECTRICAL CHARACTERISTICS (Note 1)
(Unless otherwise specified, all limits are specified for TJ=25°C, VDD=5V, VIN=18mV, RL=2.2kΩ and C=2.2μF.
Boldface limits apply at the temperature extremes.)
MIN
TYP
MAX
PARAMETER
SYMBOL
TEST CONDITIONS
UNIT
(Note 2) (Note 3) (Note 2)
158
250
μA
ULV1012-07
300
μA
200
300
μA
ULV1012-15
325
μA
Supply Current
IDD
VIN=GND
188
260
μA
ULV1012-20
310
μA
160
250
μA
ULV1012-25
300
μA
ULV1012-07
59
dB
f=1kHz,
ULV1012-15
60
dB
Signal To Noise Ratio
SNR
VIN=18mV,
ULV1012-20
61
dB
A-Weighted
ULV1012-25
61
dB
ULV1012-07
170
mVPP
f=1kHz and ULV1012-15
100
mVPP
Max Input Signal
VIN
THD+N<1% ULV1012-20
55
mVPP
ULV1012-25
28
mVPP
4.45
4.65
4.80
V
ULV1012-07
4.38
4.85
V
4.34
4.56
4.74
V
ULV1012-15
4.28
4.80
V
Output Voltage
VOUT
VIN=GND
4.40
4.58
4.75
V
ULV1012-20
4.30
4.85
V
4.45
4.65
4.83
V
ULV1012-25
4.39
4.86
V
Lower −3dB Roll Off Frequency
fLOW
RSOURCE=50Ω
67
Hz
Upper −3dB Roll Off Frequency
fHIGH
RSOURCE=50Ω
150
kHz
ULV1012-07
-96
dBV
ULV1012-15
-89
dBV
Output Noise
en
A-Weighted
ULV1012-20
-84
dBV
ULV1012-25
-82
dBV
ULV1012-07
0.12
%
f=1kHz,
ULV1012-15
0.13
%
Total Harmonic Distortion
THD
VIN=18mV
ULV1012-20
0.18
%
ULV1012-25
0.21
%
Input Capacitance
CIN
2
pF
Input Impedance
ZIN
>1000
GΩ
6.4
8.1
9.5
dB
ULV1012-07
5.5
10.7
dB
14.0
15.6
16.9
dB
ULV1012-15
f=1kHz,
13.1
17.5
dB
Gain
AV
RSOURCE=50Ω
19.2
21.1
22.3
dB
ULV1012-20
17.0
23.5
dB
22.5
23.9
25.0
dB
ULV1012-25
21.2
25.8
dB
Notes: 1. Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing
conditions result in very limited self-heating of the device such that TJ=TA. No specification of parametric
performance is indicated in the electrical tables under conditions of internal self-heating where TJ>TA.
2. All limits are specified by design or statistical analysis.
3. Typical values represent the most likely parametric norm.
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
Preliminary
CMOS IC
TYPICAL APPLICATION CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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