2002 Microchip Technology Inc.
DS21343B-page 1
Features
• Tiny SOT-23A Package
• Optimized for Single Supply Operation
• Ultra Low Input Bias Current: Less than 100pA
• Low Quiescent
Current: 6
µ
A (Typ.)
Shutdown Mode: 0.05
µ
A (Typ.) (TC1035)
• Shutdown Mode (TC1035)
• Rail-to-Rail Inputs and Outputs
Applications
• Power Management Circuits
• Battery Operated Equipment
• Consumer Products
Device Selection Table
Package Types
General Description
The TC1034/TC1035 are single CMOS operational
amplifiers for low power applications.
They have a typical operating supply current of 6
µ
A,
which is constant over the supply voltage range of 1.8V
to 5.5V. The Op Amp has a rail-to-rail input and output
which allows operation at low supply voltages with
large input and output signal swings.
An active low shutdown input, SHDN, is available on
the TC1035 and disables the op amp, placing its output
in a high-impedance state. The TC1035 draws less
than 0.1
µ
A when the shutdown mode is active.
Packaged in a 5-Pin SOT-23A (TC1034) or 6-Pin SOT-
23A (TC1035), these single operational amplifiers are
ideal for applications requiring high integration, small
size and low power.
Functional Block Diagram
Part Number
Package
Temperature
Range
TC1034ECT
5-Pin SOT-23A
-40°C to +85°C
TC1035ECH
6-Pin SOT-23A
-40°C to +85°C
NOTE: 5-Pin SOT-23A is equivalent to the EIAJ SC-74A.
6-Pin SOT-23A is equivalent to the EIAJ SC-74.
OUTPUT V
DD
IN+
V
SS
IN-
5-Pin SOT-23A
TC1034ECT
1
3
5
4
2
OUTPUT V
DD
IN+
V
SS
IN-
SHDN
6-Pin SOT-23A
TC1035ECH
1
3
6
4
5
2
+
–
OUTPUT
IN+
TC1034
+
–
OUTPUT
IN+
TC1035
1
2
3
5
4
6
5
4
1
2
3
V
DD
V
SS
IN-
V
SS
SHDN
IN-
V
DD
TC1034/TC1035
Linear Building Block – Single Operational Amplifiers
in SOT Packages
TC1034/TC1035
DS21343B-page 2
2002 Microchip Technology Inc.
1.0
ELECTRICAL
CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage ......................................................6.0V
Voltage on Any Pin .......... (V
SS
– 0.3V) to (V
DD
+ 0.3V)
Junction Temperature....................................... +150°C
Operating Temperature Range............. -40°C to +85°C
Storage Temperature Range .............. -55°C to +150°C
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC1034/TC1035 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: T
A
= -40° to +85°C and V
DD
= 1.8V to 5.5V, unless otherwise specified. Typical values apply at 25°C.
Minimum and maximum values apply for V
DD
= 3.0V.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
V
DD
Supply Voltage
1.8
—
5.5
V
Shutdown Input (TC1035 Only)
V
IH
Input High Threshold
80% V
DD
—
—
V
V
IL
Input Low Threshold
—
—
20% V
DD
V
I
SI
Shutdown Input Current (Note 1)
—
—
±100
nA
Op Amp
I
Q
Supply Current, Operating (Note 1)
—
6
10
µ
A
Output Open, SHDN = V
DD
I
SHDN
Supply Current, Shutdown Mode
(Note 1)
—
0.05
0.1
µ
A
SHDN = V
SS
R
OUT
(SD)
Output Resistance in Shutdown
(Note 1)
20
—
—
M
Ω
SHDN = V
SS
C
OUT
(SD)
Output Capacitance in Shutdown
(Note 1)
—
—
5
pF
SHDN = V
SS
T
SEL
Select Time
(V
OUT
from SHDN = V
IH
) (Note 1)
—
15
—
µ
sec
R
L
=10k
Ω
to V
SS
T
DESEL
Deselect Time
(V
OUT
from SHDN = V
IL
) (Note 1)
—
20
—
nsec
R
L
=10k
Ω
to V
SS
A
VOL
Large Signal Voltage Gain
—
100
—
V/mV
R
O
= 10k
Ω
, V
DD
= 5V
V
ICMR
Common Mode Input Voltage Range
V
SS
– 0.2
—
V
DD
+ 0.2
V
V
OS
Input Offset Voltage (Note 1)
±100
±0.3
±500
±1.5
µ
V
mV
V
DD
= 3V, V
CM
= 1.5V, T
A
= 25°C
T
A
= -40°C to 85°C
I
B
Input Bias Current
-100
50
100
pA
T
A
= 25°C;
V
CM
= V
DD
to V
SS
V
OS(DRIFT)
Input Offset Voltage Drift
—
±4
—
µ
V/°C
V
DD
= 3V; V
CM
= 1.5V
GBWP
Gain Bandwidth Product
—
90
—
kHz
V
DD
= 1.8V to 5.5V;
V
O
= V
DD
to V
SS
SR
Slew Rate
—
35
—
mV/
µ
sec C
L
= 100pF,
R
L
= 1M
Ω
to GND,
Gain = 1,
V
IN
= V
SS
to V
DD
V
OUT
Output Signal Swing
V
SS
+ 0.05
—
V
DD
– 0.05
V
R
L
= 10k
Ω
CMRR
Common Mode Rejection Ratio
70
—
—
dB
T
A
= 25°C; V
DD
= 5V
V
CM
= V
DD
to V
SS
PSRR
Power Supply Rejection Ratio
80
—
—
dB
T
A
= 25°C, V
CM
= V
SS
V
DD
= 1.8V to 5V
Note
1:
TC1035 only.
2002 Microchip Technology Inc.
DS21343B-page 3
TC1034/TC1035
TC1034/TC1035 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: T
A
= -40° to +85°C and V
DD
= 1.8V to 5.5V, unless otherwise specified. Typical values apply at 25°C.
Minimum and maximum values apply for V
DD
= 3.0V.
Symbol
Parameter
Min
Typ
Max
Units
Test Conditions
I
SRC
Output Source Current
3
—
—
mA
V
IN
+ = V
DD
, V
IN
- = V
SS
Output Shorted to V
SS
V
DD
= 1.8V, Gain =1
I
SINK
Output Sink Current
4
—
—
mA
V
IN
+ = V
SS
, V
IN
- = V
DD,
Output Shorted to V
DD
V
DD
= 1.8V, Gain =1
E
n
Input Noise Voltage
—
10
—
µ
V
PP
0.1Hz to 10Hz
e
n
Input Noise Voltage Density
—
125
—
nV/
√
Hz
1kHz
Note
1:
TC1035 only.
TC1034/TC1035
DS21343B-page 4
2002 Microchip Technology Inc.
2.0
PIN DESCRIPTIONS
The description of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin No.
TC1034
(5-Pin SOT-23A)
Symbol
Description
1
OUT
Operational amplifier output.
2
V
DD
Positive power supply.
3
IN+
Operational amplifier non-inverting input.
4
IN-
Operational amplifier inverting input.
5
V
SS
Negative power supply.
Pin No.
TC1035
(6-Pin SOT-23A)
Symbol
Description
1
OUT
Operational amplifier output.
2
V
DD
Positive power supply.
3
IN+
Operational amplifier non-inverting input.
4
IN-
Operational amplifier inverting input.
5
SHDN
Active Low Shutdown Input (TC1035 only). A low input on this pin disables the operational
amplifier and places the output terminal in a high-impedance state.
6
V
SS
Negative power supply.
2002 Microchip Technology Inc.
DS21343B-page 5
TC1034/TC1035
3.0
DETAILED DESCRIPTION
The TC1034/TC1035 is one of a series of very low
power, linear building block products targeted at low
voltage, single supply applications. The TC1034/
TC1035 minimum operating voltage is 1.8V and
maximum supply current is only 8
µ
A. The TC1034 is a
single op amp in a 5-Pin SOT-23A package, and the
TC1035 is a single op amp with shutdown input in a
6-Pin SOT-23A package.
Microchip’s op amps are internally compensated to be
unity gain stable and have a typical gain bandwidth
product of 90kHz with typical slew rates of 35V/msec.
The amplifier’s input range extends beyond both
supplies by 200mV and the outputs will swing to within
several millivolts of the supplies depending on the load
current being driven.
Input offset voltage is 500
µ
V max at 25°C with an input
bias current of less than 100pA. This makes these
devices extremely suitable for precision, low power
applications.
4.0
TYPICAL APPLICATIONS
The TC1034/TC1035 lends itself to a wide variety of
applications, particularly in battery powered systems. It
typically finds applications in power management,
processor supervisory and interface circuitry.
4.1
Voice Band Receive Filter
The majority of spectral energy for human voices is
found to be in a 2.7kHz frequency band from 300Hz to
3kHz.
To properly recover a voice signal in applications
such as radios, cellular phones and voice pagers, a low
power bandpass filter that is matched to the human
voice spectrum can be implemented using Microchip’s
CMOS op amps.
Figure 4-1 shows a unity gain multi-
pole Butterworth filter with ripple less than 0.15dB in
the human voice band. The lower 3dB cut-off frequency
is 70Hz (single order response), while the upper cut-off
frequency is 3.5kHz (fourth order response).
4.2
Supervisory Audio Tone (SAT)
Filter for Cellular
Supervisory Audio Tones (SAT) provide a reliable
transmission path between cellular subscriber units
and base stations. The SAT tone functions much like
the current/voltage used in land line telephone systems
to indicate that a phone is off the hook. The SAT tone
may be one of three frequencies: 5970, 6000 or
6030Hz. A loss of SAT implies that channel conditions
are impaired and if SAT is interrupted for more than 5
seconds a cellular call is terminated.
Figure 4-2 shows a high Q (30) second order SAT
detection bandpass filter using Microchip’s CMOS op
amp architecture. This circuit nulls all frequencies
except the three SAT tones of interest.
TC1034/TC1035
DS21343B-page 6
2002 Microchip Technology Inc.
FIGURE 4-1:
MULTI-POLE BUTTERWORTH VOICE BAND RECEIVE FILTER
FIGURE 4-2:
SECOND ORDER SAT BANDPASS FILTER
+
–
+
–
V
OUT
V
IN
21.0k
21.0k
21.0k
2400pF
470pF
750pF
V
DD
V
DD
/2
6800pF
0.1
µF
22.6k
22.6k
Gain = 0dB
Fch = 3.5kHz
-24dB/Octave
Fcl = 70Hz
+6dB/Octave
Passband Ripple
< 0.15dB
TC1034
TC1034
V
DD
TC1034
+
–
11.2
24.3k
48.7k
.036
µF
.036
µF
V
IN
V
DD
V
OUT
Gain = 0dB
Q = F
C
BW (3dB)
Q = 30
FC = 6kHz
TC1034
V
DD
/2
V
DD
/2
2002 Microchip Technology Inc.
DS21343B-page 7
TC1034/TC1035
5.0
TYPICAL CHARACTERISTICS
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Op Amp Supply Current
vs. Temperature
Op Amp Supply Voltage
vs. Supply Current
SUPPLY CURRENT (
µ
A
)
SUPPLY VOLTAGE (V)
S
UPPLY CURRENT
(µ
A)
TEMPERATURE (
°C)
Op Amp Power Supply Rejection
Ratio (PSRR) vs. Frequency
FREQUENCY (Hz)
P
SRR
(dB
)
1K
10K
100
0
-10
-20
-30
-40
-50
-60
-70
100K
V
V
IN =
PP
16
12
10
5
0
1
2
3
4
5
6
14
(µ
16
14
12
10
8
-40
°C
25
°C
85
°C
1.8V
3V
5.5V
Op Amp Short-Circuit Current
vs. Supply Voltage
SUPPLY VOLTAGE (V)
O
UTPUT CURRENT
(mA
)
Op Amp DC Open-Loop Gain
vs. Temperature
TEMPERATURE (
°C)
3000
50
45
40
35
30
25
20
15
10
5
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
2500
2000
1500
1000
500
0
-40
°C
25
°C
85
°C
I
SINK
SUPPLY VOLTAGE (V)
DC OPEN-LOOP GAIN
(dB
)
Op Amp DC Open-Loop Gain
vs. Supply Voltage
140
120
100
80
60
40
20
0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Op Amp Load Resistance
vs. Load Capacitance
Op Amp Small-Signal
Transient Response
TIME (
µsec)
R
LO
AD
(k
Ω
)
O
UTPUT VOLTAGE
(mV
)
INPUT VOLTAGE
(mV
)
100
50
0
100
50
0
0
250 500 750 1000
10 20 30 40 50 60 70 80
90
12501500 1750 2000
100
10
1
1000
V
V
= 1.5V
10% Overshoot
Region of Marginal Stability
Region of Stable Operation
Op Amp Short-Circuit Current
vs. Supply Voltage
SUPPLY VOLTAGE (V)
O
UTPUT CURRENT
(mA
)
0
-5
-10
-15
-20
-25
-30
-35
0.0
1.0
2.0
3.0
4.0
5.0
6.0
I
SRC
TC1034/TC1035
DS21343B-page 8
2002 Microchip Technology Inc.
5.0
TYPICAL CHARACTERISTICS (CONTINUED)
Op Amp Large-Signal
Transient Response
TIME (
µsec)
4
6
2
0
4
6
2
0
10 20 30 40 50 60 70 80
90
INPUT VOLTAGE
(mV
)
2002 Microchip Technology Inc.
DS21343B-page 9
TC1034/TC1035
6.0
PACKAGING INFORMATION
6.1
Package Marking Information
1 and 2 = part number code + temperature range and
voltage
3 = year and quarter code
4 = lot ID number
6.2
Taping Form
TC1034/TC1035 (V)
Code
TC1034ECT
AE
TC1035ECH
AF
5-Pin SOT-23A
6-Pin SOT-23A
Component Taping Orientation for 5-Pin SOT-23A (EIAJ SC-74A) Devices
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
5-Pin SOT-23A
8 mm
4 mm
3000
7 in
Carrier Tape, Number of Components Per Reel and Reel Size
User Direction of Feed
Device
Marking
PIN 1
Standard Reel Component Orientation
TR Suffix Device
(Mark Right Side Up)
W
P
TC1034/TC1035
DS21343B-page 10
2002 Microchip Technology Inc.
6.2
Taping Form (Continued)
Component Taping Orientation for 6-Pin SOT-23A (EIAJ SC-74) Devices
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
6-Pin SOT-23A
8 mm
4 mm
3000
7 in
Carrier Tape, Number of Components Per Reel and Reel Size
Standard Reel Component Orientation
For TR Suffix Device
(Mark Right Side Up)
User Direction of Feed
Device
Marking
PIN 1
Device
Marking
Device
Marking
Device
Marking
Device
Marking
Device
Marking
Device
Marking
Device
Marking
Device
Marking
Device
Marking
Device
Marking
Device
Marking
Device
Marking
W
P