Ordering number : ENA0715
LA1070
Monolithic Linear IC
On-Glass Antenna Amplifier AGC IC
Overview
The LA1070 is an automatic gain control IC for use with automotive on-glass antennas.
http://onsemi.com
Functions
•
RF-AGC
Features
•
AGC circuit includes a 20dB hysteresis function
•
Can implement an FM/AM tuner AGC circuit with just one IC
•
AGC circuit provides improved interference characteristics
•
Built-in time constant circuit for underbridge countermeasures
•
Allows implementation of miniature antenna amplifier modules with a minimal number of external components
•
Includes a total of four PIN diode driver circuits
Semiconductor Components Industries, LLC, 2013
June, 2013
42507 MS PC 20070206-S00007 No.A0715-1/8
LA1070
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Symbol
VCC1 Max
VCC2 Max (DC)
VCC2 Max (Pulse)
Maximum sink current
Maximum output current
Maximum current consumption
Allowable power dissipation
ITHA
DRV IOUT
ICC1 Max
ICC2 Max
Pd max
Conditions
The pin 1 voltage (115°C)
The pin 14 voltage (115°C)
The pin 14 voltage (25°C) (*1, *2)
The pin 11 sink current (*1)
(*1)
INPUT = 130dBu, VCC1 = 9V, DRV IOUT = 10mA
INPUT = 130dBu, VCC2 = 16V, DRV IOUT = 10mA
INPUT = 130dBu, DRV IOUT =
10mA
Circuit board size : 30
×
70
×
1.6(*1)
Operating temperature
Storage temperature
Topr
Tstg
-40 to +115
-55 to +150
°C
°C
115°C
25°C
Ratings
9
16
18
2
10
29
29
320
1
Unit
V
V
V
mA
mA
mA
mA
mW
W
*1: The stipulated Pdmax must not be exceeded.
*2: Ten cycles with VHi = 18V for 1 minute and VLo = 0V for 9 minutes.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Operating Conditions
at Ta = 25°C
Parameter
Recommended supply voltage 1
Guaranteed operating supply voltage 1
Recommended supply voltage 2
Guaranteed operating supply voltage 2
Maximum allowable RF input
Symbol
VCC1
VCC1 op
VCC2
VCC2 op
Input max
(*1)
(*1)
Pins 2-4, 6, 7, 27-25, 23, 22
Conditions
Ratings
8
7 to 8.8
12
7 to 15.8
130
Unit
V
V
V
V
dBu
*1: The stipulated Pdmax must not be exceeded.
Electrical Characteristics
at at Ta = 25°C, VCC1 = 8.0V, VCC2 = 12V in the specified circuit
Parameter
Signal detection sensitivity 1
Symbol
Sen1
Conditions
The input level when the pin 12 and pin 17
(DRV_OUT) output voltage switches from
10.3V to 0V.
The input level when the pin 13 and pin 16
(DRV_OUT) output voltage switches from
0V to 10.3V. (*1)
Signal detection sensitivity 2
Sen2
The input level when the pin 12 and pin 17
(DRV_OUT) output voltage switches from
0 V to 10.3 V.
The input level when the pin 13 and pin 16
(DRV_OUT) output voltage switches from
10.3 V to 0 V. (*1)
DRV circuit output voltage
VOHi
VOLo
Latch start time
FFAT
The high-level output voltage provided by pins 12, 13, 17, and
16 (DRV_OUT).
The low-level output voltage provided by pins 12, 13, 17, and
16 (DRV_OUT).
The time from the point the RF signal goes on to the point the
pin 12 and 17 output voltage reaches 10% of the saturation
voltage.
Latch release time
FFRE
The time from the point the RF signal goes on to the point the
pin 12 and 17 output voltage reaches 90% of the saturation
voltage.
Comparator reference voltage 1
Traise
The pin 9 and pin 20 (VREF_OUT) pin output voltage with the pins open
2.2
2.4
2.6
V
570
950
1520
ms
58
90
122
ms
0.1
0.2
V
9.8
10.3
10.8
V
100k
1M
110M
250M (*2)
800M (*2)
99
99
99
99
103
103
103
103
102
107
107
107
107
dBu
Frequency (Hz)
100K
1M
110M
250M (*2)
800M (*2)
Ratings
min
79
79
79
89
typ
83
83
83
93
91
max
87
87
87
97
Unit
dBu
Continued on next page.
*1: The DRV circuit depends on VCC. The DRV circuit output voltage (output saturation voltage) varies with the output current setting set with an external
resistor. See the internal equivalent circuit diagram for details.
*2: The values at 250MHz and 800MHz are used for the specifications and refer to the "Input circuit when the input signal is in the range 250MHz to 800MHz"
in the specified peripheral components circuit diagram and block diagram.
No.A0715-2/8
LA1070
Continued from preceding page.
Parameter
Comparator reference voltage 2
Temperature fluctuation type
voltage output
Temperature detection circuit
output voltage
Current drain 1
Current drain 2
Temperature detection sensitivity
VTHA1
VTHA2
ICCO1
ICCO2
TTHA
Symbol
VREF1
VREF2
Conditions
The pin 9 and pin 20 (VREF_OUT) pin output voltage with the
pins grounded through a 10 k
resistor.
2.6
7.5
2.8
7.9
0.25
15
15
80
19
18
95
3.0
8
0.35
23
21
110
V
V
V
mA
mA
°C
The pin 10 and pin 19 (FM_BIAS) output voltage level
Maximum output current = 1 mA
The pin 11 (THAMAL_OUT) output voltage
The pin 11 (THAMAL_OUT) output voltage, sink current
=160μA, ,Ta=115°C
The VCC1 current drain with no input
The VCC2 current drain with no input
The ambient temperature when pin 11 (THAMAL_OUT) is low.
(Design guarantee value)
Ratings
min
1.3
typ
1.5
max
1.7
Unit
V
Package Dimensions
unit : mm (typ)
3222A
15.0
28
15
5.6
7.6
1
0.8
(0.7)
2.0
0.3
14
0.2
SANYO : HSOP28(275mil)
0.1
2.7
(1.5)
1.7max
0.5
No.A0715-3/8
LA1070
Pin Functions and bias voltage (Ta = 25°C)
PIN
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
VCC1
DET1_IN_A
AMP_IN2_A
AMP_IN1_A
AMP_GND_A
AMP_OUT_A
DET2_IN_A
FF_OUT_A
VREF_OUT_A
FM_BIAS_A
THERMAL_OUT
DRV1_OUT_A
DRV2_OUT_A
VCC2
GND2
DRV2_OUT_B
DRV1_OUT_B
VREG49
FM_BIAS_B
VREF_OUT_B
FF_OUT_B
DET2_IN_B
AMP_OUT_B
AMP_GND_B
AMP_IN1_B
AMP_IN2_B
DET1_IN_B
GND1
Power supply for circuits other than the DRV circuit
Detection circuit 1 input
Differential amplifier single-sided input
Differential amplifier single-sided input
RF circuit dedicated ground
Differential amplifier output
Detection circuit 2 input
Hold circuit and time constant circuit output
Comparator reference voltage output
Temperature fluctuation type bias circuit output
Temperature detection circuit output
DRV circuit output (low-level output with no input)
DRV circuit output (high-level output with no input)
DRV circuit power supply
DRV circuit ground
DRV circuit output (high-level output with no input)
DRV circuit output (low-level output with no input)
Internal power supply circuit. 4.9V output
Temperature fluctuation type bias circuit output
Comparator reference voltage output
Hold circuit and time constant circuit output
Detection circuit 2 input
Differential amplifier output
RF circuit dedicated ground
Differential amplifier single-sided input
Differential amplifier single-sided input
Detection circuit 1 input
Ground for circuits other than the DRV circuit
8.00
1.85
1.87
1.87
0
6.62
1.85
0
2.39
2.79
7.97
0
10.30
12.00
0
10.30
0
4.92
2.78
2.39
0
1.85
6.61
0
1.87
1.87
1.85
0
When set, High
→
Low
When set, Low
→
High
When set, Low
→
High
When set, High
→
Low
Pin
Description
Pin bias voltage
Note
No.A0715-5/8
Microcontroller MCU
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