AD7010ARS Analog Devices, AD7010ARS Datasheet

no-image

AD7010ARS

Manufacturer Part Number
AD7010ARS
Description
Manufacturer
Analog Devices
Datasheet

Specifications of AD7010ARS

Case
SSOP
Dc
94+

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD7010ARSZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
a
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FEATURES
Single +5 V Supply
On-Chip Voltage Reference
24-Pin SSOP
APPLICATIONS
Japanese Digital Cellular Telephony
On-Chip /4 DQPSK Modulator
Root-Raised-Cosine Tx Filters,
Two 10-Bit D/A Converters
4th Order Reconstruction Filters
Differential Analog Outputs
On-Chip Ramp Up/Down Power Control
On-Chip Tx Offset Calibration
Very Low Power Dissipation, 30 mW typ
Power Down Mode < 5 A
Tx DATA
POWER
READY
Tx CLK
BIN
= 0.5
AD7010
MCLK
DGND
MODULATOR
/4 DQPSK
FUNCTIONAL BLOCK DIAGRAM
JDC /4 DQPSK Baseband Transmit Port
V
DD
10-BIT
I-DAC
Q-DAC
10-BIT
GENERAL DESCRIPTION
The AD7010 is a complete low power, CMOS, /4 DQPSK
modulator with single +5 V power supply. The part is designed
to perform the baseband conversion of I and Q transmit
waveforms in accordance with the Japanese Digital Cellular
Telephone system.
The on-chip /4 Differential Quadrature Phase Shift Keying
(DQPSK) digital modulator, which includes the Root Raised
Cosine filters, generates I and Q data in response to the transmit
data stream. The AD7010 also contains ramp control envelope
logic to shape the I and Q output waveforms when ramping up
or down at the beginning or end of a transmit burst.
Besides providing all the necessary logic to perform /4 DQPSK
modulation, the part also provides reconstruction filters to
smooth the DAC outputs, providing continuous time analog
outputs. The AD7010 generates differential analog outputs for
both the I and Q signals.
As it is a necessity for all digital mobile systems to use the lowest
possible power, the device has power down options. The
AD7010 is housed in a space efficient 24-pin SSOP (Shrink
Small Outline Package).
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
REFERENCE
BYPASS
2.46V
RECONSTRUCTION
RECONSTRUCTION
V
AA
CALIBRATION CIRCUITRY
FILTERS
FILTERS
MODE1
AGND
MODE2
ITx
ITx
BOUT
QTx
QTx
AD7010
Fax: 617/326-8703
CMOS

Related parts for AD7010ARS

AD7010ARS Summary of contents

Page 1

... Tx CLK READY BIN REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. ...

Page 2

... Measured while the digital inputs to the transmit interface are static and equal Specifications subject to change without notice. Model Temperature Range AD7010ARS – + 10%; Test = AGND = DGND = Power = V . All specifications are T DD MIN AD7010ARS Units Volts REF REF V /2 Volts REF 0.875 7.5% Volts max 1 % rms typ 2 ...

Page 3

ABSOLUTE MAXIMUM RATINGS +25 C unless otherwise noted Tx AGND . . . . . . . . . . . . . . . –0 AGND ...

Page 4

AD7010 TRANSMIT SECTION TIMING Parameter Limit – + – 4097t + – ...

Page 5

SSOP Pin Number Mnemonic Function POWER SUPPLY 19 V Positive power supply for analog section Positive power supply for digital section, both supplies should be externally tied together. DD 14, 18, 23 AGND Analog ground for transmit ...

Page 6

AD7010 TERMINOLOGY Error Vector Magnitude This is a measure of the rms error vector introduced by the AD7010 where signal error vector is defined as the rms devia- tion of a transmitted symbol from its ideal position, as illustrated in ...

Page 7

Ramp-Up/Down Envelope Logic The AD7010 provides on-chip envelope shaping logic, providing power shaping control for the beginning and end of a transmit burst. When BIN (Burst In) is brought high, the modulator is reset to a transmitting all zeros state ...

Page 8

AD7010 1.2 1.2 0.8 0.8 0.4 0 –0.4 –0.4 –0.8 –0.8 –1.2 –1.2 –1.2 –1.2 –0.8 –0.8 –0.4 –0 0.4 0.4 I Channel – Volts I Channel – Volts Figure 13. AD7010 I vs. Q Waveforms ...

Related keywords