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MAX1005EEE+T

P1-P3P4-P6P7-P8
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
_______________General Description
The MAX1005 is a combined digitizer and reconstruc-
tion integrated circuit designed to work in systems that
demodulate and modulate communications signals. It
integrates IF undersampling and signal synthesis func-
tions into a single, low-power circuit. Its analog-to-
digital converter (ADC) is used to directly sample or
undersample a downconverted RF signal, while its
digital-to-analog converter (DAC) recreates the IF sub-
carrier and transmission data. The MAX1005’s ADC is
ideal for undersampling applications, due to the analog
input amplifier’s wide (15MHz) bandwidth. The DAC
has very low glitch energy, which minimizes the trans-
mission of unwanted spurious signals. An on-chip
reference provides for low-noise ADC and DAC conver-
sions.
The MAX1005 provides a high level of signal integrity
from a low power budget. It operates from a single
power supply, or from separate analog and digital sup-
plies with independent voltages ranging from +2.7V to
+5.5V. The MAX1005 can operate with an unregulated
analog supply of 5.5V and a regulated digital supply
down to 2.7V. This flexible power-supply operation
saves additional power in complex digital systems.
The MAX1005 has three operating modes: transmit
(DAC active), receive (ADC active), and shutdown
(ADC and DAC inactive). In shutdown mode, the total
supply current drops below 1µA. The device requires
only 2.4µs to wake up from shutdown mode. The
MAX1005 is ideal for hand-held, as well as base-station
applications. It is available in a tiny 16-pin QSOP pack-
age specified for operation over both the commercial
and extended temperature ranges.
________________________Applications
PWT1900
PHS/P
Wireless Loops
PCS/N
____________________________Features
♦ Differential-Input, 5-Bit ADC
♦ Differential-Output, 7-Bit DAC
♦ 15Msps Min Conversion Rate
♦ 25MHz -1dB Full-Power Bandwidth
♦ 44dB SFDR for ADC
39dB at 10.7MHz SFDR (Imaged) for DAC
♦ Internal Voltage Reference
♦ Parallel Logic Interface
♦ Single-Supply Operation (+2.7V to +5.5V)
♦ 0.1µA Low-Power Shutdown Mode
MAX1005
IF Undersampler
________________________________________________________________
Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
VCCD CLK
D0
D1
D2
D3
D4
D5
D6
TOP VIEW
MAX1005
QSOP
DGND
RXEN
TXEN
AIO+
AIO-
AGND
VCCA
__________________Pin Configuration
19-1291; Rev 0; 9/97
PART
MAX1005CEE
MAX1005EEE -40°C to +85°C
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
16 QSOP
16 QSOP
______________Ordering Information
Functional Diagram appears at end of data sheet.
MAX1005
IF Undersampler
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCCA = VCCD = 3.0V, f
CLK
= 15MHz, R
L
= ∞, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Stresses beyond 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 beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCCA to AGND ........................................................-0.3V, +6.0V
VCCD to DGND........................................................-0.3V, +6.0V
VCCA to VCCD...................................................................±6.3V
Digital I/O Pins (D0–D6, CLK, RXEN, TXEN)
to DGND.................................-0.3V to (VCCD + 0.3V) or 6.0V
(whichever is smaller)
Analog I/O Pins (AIO+, AIO-)
to AGND................................(VCCA - 1.5V) to (VCCA + 0.3V)
AGND to DGND........................................................-0.3V, +0.3V
Power Dissipation (T
A
= +70°C)
QSOP (derate 5.90mW/°C above 70°C) ......................470mW
Operating Temperature Ranges
MAX1005CEE .....................................................0°C to +70°C
MAX1005EEE...................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, <10sec)...........................+300°C
(Notes 9, 10)
AIO+ = AIO-
(Note 4)
(Notes 6, 7)
(Note 3)
(Note 5)
CONDITIONS
-42
dB
-42 -24
THDTotal Harmonic Distortion
mV368 400 432V
IN
Full-Scale Input Range
LSB±2Offset Error
LSB±0.2DNLDifferential Nonlinearity
LSB±0.2INLIntegral Nonlinearity
Bits5NResolution
dB67PSRPower-Supply Rejection
CLK
period
0.5DAC Latency
dBc-50Clock Feedthrough
µs0.7 2.4t
WAKE
Wakeup Time Exiting Shutdown
LSB±0.2 ±1INLIntegral Nonlinearity
Bits7NResolution
-28 dBcTHD+N
Total Harmonic Distortion plus
Noise
39
dBc
28 39
SFDRSpurious-Free Dynamic Range
LSB±0.2 ±1DNLDifferential Nonlinearity
LSB±1Offset Error
mVp-p736 800 864V
OUT
Transmit Full-Scale Output Voltage
UNITSMIN TYP MAXSYMBOLPARAMETER
VCCA = VCCD = 2.7V to 5.5V
VCCA = VCCD = 3.0V
VCCA = VCCD = 3.0V
VCC_ (A or D or both) = 3.0V ±100mVp-p at
100kHz
VCCA = VCCD = 2.7V to 5.5V
VCCA = VCCD = 3.0V
(Note 9)
(Note 9)
4.9
Bits
4.5 4.9
ENOBEffective Number of Bits
44
dB
24 44
SFDRSpurious-Free Dynamic Range
VCCA = VCCD = 2.7V to 5.5V
VCCA = VCCD = 3.0V
VCCA = VCCD = 2.7V to 5.5V
VCCA = VCCD = 3.0V
TRANSMIT DAC DC ACCURACY (Note 1)
TRANSMIT DAC DYNAMIC PERFORMANCE (T
A
= +25°C) (Note 2)
TRANSMIT ADC DC ACCURACY (Note 8)
RECEIVE ADC DYNAMIC PERFORMANCE (T
A
= +25°C) (Note 8)
MAX1005
IF Undersampler
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VCCA = VCCD = 3.0V, f
CLK
= 15MHz, R
L
= ∞, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
VCCD = 2.7V
to 5.5V
VCCD = 2.7V
to 5.5V
D0–D4, VCCD = 2.7V to 5.5V, I
SINK
= 50µA
D0–D4, VCCD = 2.7V to 5.5V,
I
SOURCE
= 200µA
VCCA = VCCD = 3.0V, C
L
≤ 12.5pF,
RXEN = TXEN
VCCA = VCCD
= 3.0V,
C
L
≤ 12.5pF
AIO+ or AIO- to GND
Differential between AIO+ and AIO-
VCCA = VCCD
= 3.0V,
C
L
≤ 12.5pF
CONDITIONS
-0.1 0.5
V
0.3VCCD
V
IL
Input Low Voltage
VCCD - VCCD +
0.5 0.1
V
0.7VCCD
V
IH
Input High Voltage
V0 0.5V
OL
Output Low Voltage
VVCCD - 1.0 VCCDV
OH
Output High Voltage
µA<0.1 5
ICCA +
ICD
Shutdown Supply Current
3.0 5.6
mA
4.0 6.4
ICCDDigital Supply Current
2.5 3.8
mA
9.0 14.8
ICCAAnalog Supply Current
µs0.6 2.4t
WAKE
Wakeup Time Exiting Shutdown
Mode
Msps15
MHz15 25
Input Full-Power Bandwidth
(-1dB)
Conversion Rate
V2.7 5.5
VCCA,
VCCD
Supply Voltage
pF
4
C
IN
Input Capacitance (Note 6)
LSB<0.1PSRPower-Supply Rejection
kΩ1.56 2.00 2.44R
IN
Input Resistance
ppm/°C-2000TCR
IN
Input Resistance Temperature
Coefficient
UNITSMIN TYP MAXSYMBOLPARAMETER
RXEN, TXEN
D0–D6, CLK
RXEN, TXEN
D0–D6, CLK
V
IN
= 90% of full scale
RXEN = 0, TXEN = 1,
ADC off, DAC on
RXEN = 1, TXEN = 0,
ADC on, DAC off
VCC_ (A or D or both) = 3.0V ±100mVp-p at
100kHz
T
A
= +25°C, differential between AIO+ and
AIO-
RXEN = 0, TXEN = 1,
ADC off, DAC on
RXEN = 1, TXEN = 0,
ADC on, DAC off
4
DIGITAL INPUTS/OUTPUTS (D0–D6, RXEN, TXEN, CLK) (Note 12)
POWER REQUIREMENTS
ANALOG INPUT/OUTPUT (AIO+, AIO-) (Note 11)
P1-P3P4-P6P7-P8

MAX1005EEE+T

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Manufacturer:
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Description:
IC UNDERSAMPLER IF 16-QSOP
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