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| 型号： | MC1311 |
| 厂商： | Motorola, Inc. |
| 英文描述： | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| 中文描述： | 通用窄带调频接收器集成电路 |
| 文件页数： | 17/68页 |
| 文件大小： | 1316K |
| 代理商： | MC1311 |
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MC13110A/B MC13111A/B
DEVICE DESCRIPTION AND APPLICATION INFORMATION
17
MOTOROLA ANALOG IC DEVICE DATA
The following text, graphics, tables and schematics are
provided to the user as a source of valuable technical
information about the Universal Cordless Telephone IC. This
information originates from thorough evaluation of the device
performance for the US and French applications. This data
was obtained by using units from typical wafer lots. It is
important to note that the forgoing data and information was
from a limited number of units. By no means is the user to
assume that the data following is a guaranteed parametric.
Only the minimum and maximum limits identified in the
electrical characteristics tables found earlier in this spec are
guaranteed.
General Circuit Description
The MC13110A/B and MC13111A/B are a low power dual
conversion narrowband FM receiver designed for
applications up to 80 MHz carrier frequency. This device is
primarily designated to be used for the 49 MHz cordless
phone (CT–0), but has other applications such as low data
rate narrowband data links and as a backend device for 900
MHz systems where baseband analog processing is
required. This device contains a first and second mixer,
limiter, demodulator, extended range receive signal strength
(RSSI), receive and transmit baseband processing, dual
programmable PLL, low battery detect, and serial interface
for microprocessor control. The FM receiver can also be
used with either a quadrature coil or ceramic resonator.
Refer to the Pin Function Description table for the simplified
internal circuit schematic and description of this device.
DC Current and Battery Detect
Figures 3 through 6 are the current consumption for
Inactive, Standby, Receive, and Active modes versus supply
voltages. Figures 7 and 8 show the typical behavior of current
consumption in relation to temperature. The relationship of
additional current draw due to IP3 bit set to <1> and supply
voltage are shown in Figures 9 and 10.
For the Low Battery Detect, the user has the option to
operate the IC in the programmable or non–programmable
modes. Note that the 48 pin package can only be used in the
programmable mode. Figure 128 describes this operation
(refer to the Serial Interface section under Clock Divider
Register).
In the programmable mode several different internal
threshold levels are available (Figure 2). The bits are set
through the SCF Clock Divider Register as shown in Figures
108 and 126. The reference for the internal divider network is
VCC Audio. The voltages on the internal divider network are
compared to the Internal Reference Voltage, VB, generated
by an internal source. Since the internal comparator used is
non–inverting, a high at VCC Audio will yield a high at the
battery detect output, and vice versa for VCC Audio set to a
low level. For the 52 pin package option, the Ref 1 and Ref 2
pins need to be tied to VCC when used in the programmable
mode. It is essential to keep the external reference pins
above Gnd to prevent any possible power–on reset to be
activated.
When considering the non–programmable mode (bits set
to <000>) for the 52 pin package, the Ref 1 and Ref 2 pins
become the comparators reference. An internal switch is
activated when the non–programmable mode is chosen
connecting Ref 1 and Ref 2. Here, two external precision
resistor dividers are used to set independent thresholds for
two battery detect hysteresis comparators. The voltages on
Ref 1 and Ref 2 are again compared to the internally
generated 1.5 V reference voltage (VB).
The Low Battery Detect threshold tolerance can be
improved by adjusting a trim–pot in the external resistor
divider (user designed). The initial tolerance of the internal
reference voltage (VB) is
±
6.0%. Alternately, the tolerance of
the internal reference voltage can be improved to
±
1.5%
through MPU serial interface programming (refer to the Serial
Interface section, Figure 131). The internal reference can be
measured directly at the “VB” pin. During final test of the
telephone, the VB internal reference voltage is measured.
Then, the internal reference voltage value is adjusted
electronically through the MPU serial interface to achieve the
desired accuracy level. The voltage reference register value
should be stored in ROM during final test so that it can be
reloaded each time the combo IC is powered up. The Low
Battery Detect outputs are open collector. The battery detect
levels will depend on the accuracy of the VB voltage. Figure
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Detect
Select
(V)
(V)
á
Up
Down
(V)
(mV)
0
–
–
–
–
1
2.867
2.861
2.864
4.0
2
2.953
2.947
2.950
6.0
3
3.039
3.031
3.035
8.0
4
3.207
3.199
3.204
8.0
5
3.291
3.285
3.288
6.0
6
3.375
3.367
3.371
8.0
7
3.461
3.453
3.457
8.0
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NOTE: 10. Battery Detect Select 0 is the non–programmable operating
相关PDF资料 |
PDF描述 |
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| MC13110AFB | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110AFTA | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110BFB | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13111AFB | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110BFTA | UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC13110 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110A | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UNIVERSAL CORDLESS TELEPHONE SUBSYSTEM IC |
| MC13110AFB | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UNIVERSAL CORDLESS TELEPHONE SUBSYSTEM IC |
| MC13110AFTA | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
| MC13110BFB | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UNIVERSAL NARROWBAND FM RECEIVER INTEGRATED CIRCUIT |
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