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MAX5865ETM+;MAX5865ETM+T;中文规格书,Datasheet资料

General Description

The MAX5865 ultra-low-power, highly integrated analog front end is ideal for portable communication equipment such as handsets, PDAs, WLAN, and 3G wireless termi-nals. The MAX5865 integrates dual 8-bit receive ADCs and dual 10-bit transmit DACs while providing the high-est dynamic performance at ultra-low power. The ADCs’analog I-Q input amplifiers are fully differential and accept 1V P-P full-scale signals. Typical I-Q channel phase matching is ±0.2°and amplitude matching is ±0.05dB. The ADCs feature 48.4dB SINAD and 70dBc spurious-free dynamic range (SFDR) at f IN = 5.5MHz and f CLK = 40MHz. The DACs’ analog I-Q outputs are fully differential with ±400mV full-scale output, and 1.4V com-mon-mode level. Typical I-Q channel phase matching is ±0.15°and gain matching is ±0.05dB. The DACs also feature dual 10-bit resolution with 72dBc SF DR, and 57dB SNR at f OUT = 2.2MHz and f CLK = 40MHz.

The ADCs and DACs operate simultaneously or indepen-dently for frequency-division duplex (FDD) and time-divi-sion duplex (TDD) modes. A 3-wire serial interface controls power-down and transceiver modes of opera-tion. The typical operating power is 75.6mW at f CLK =40Msps with the ADCs and DACs operating simultane-ously in transceiver mode. The MAX5865 features an internal 1.024V voltage reference that is stable over the entire operating power-supply range and temperature range. The MAX5865 operates on a +2.7V to +3.3V ana-log power supply and a +1.8V to +3.3V digital I/O power supply for logic compatibility. The quiescent current is 8.5mA in idle mode and 1μA in shutdown mode. The MAX5865 is specified for the extended (-40°C to +85°C)temperature range and is available in a 48-pin thin QFN package.

Applications

Narrowband/Wideband CDMA Handsets and PDAs

Fixed/Mobile Broadband Wireless Modems 3G Wireless Terminals

Features

o Integrated Dual 8-Bit ADCs and Dual 10-Bit DACs o Ultra-Low Power

75.6mW at f CLK = 40MHz (Transceiver Mode)64mW at f CLK = 22MHz (Transceiver Mode)Low-Current Idle and Shutdown Modes o Excellent Dynamic Performance

48.4dB SINAD at f IN = 5.5MHz (ADC)70dB SFDR at f OUT = 2.2MHz (DAC)

o Excellent Gain/Phase Match

±0.2°Phase, ±0.05dB Gain at f IN = 5.5MHz (ADC)o Internal/External Reference Option

o +1.8V to +3.3V Digital Output Level (TTL/CMOS Compatible)o Multiplexed Parallel Digital Input/Output for ADCs/DACs o Miniature 48-Pin Thin QFN Package (7mm ?7mm)o Evaluation Kit Available (Order MAX5865EVKIT)

MAX5865

Ultra-Low-Power, High-Dynamic-

________________________________________________________________Maxim Integrated Products 1

Functional Diagram

For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at https://www.wendangku.net/doc/4c12403926.html,.

Ordering Information

*EP = Exposed paddle.

**Contact factory for dice specifications.

Pin Configuration appears at end of data sheet.

M A X 5865

Ultra-Low-Power, High-Dynamic-

Performance, 40Msps Analog Front End 2_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

V DD to GND, OV DD to OGND................................-0.3V to +3.3V GND to OGND.......................................................-0.3V to +0.3V IA+, IA-, QA+, QA-, ID+, ID-, QD+, QD-, REFP, REFN,

REFIN, COM to GND..............................-0.3V to (V DD + 0.3V)DD0–DD9, SCLK, DIN, CS , CLK,

DA0–DA7 to OGND.............................-0.3V to (OV DD + 0.3V)

Continuous Power Dissipation (T A = +70°C)48-Pin Thin QFN (derate 26.3mW/°C above

+70°C)..............................................................................2.1W Thermal Resistance θJA .................................................+38°C/W Operating Temperature Range ...........................-40°C to +85°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-60°C to +150°C Lead Temperature (soldering, 10s).................................+300°C

ELECTRICAL CHARACTERISTICS

(V DD = 3V, OV DD = 1.8V, internal reference (1.024V), C L ≈10pF on all digital outputs, f CLK = 40MHz, ADC input amplitude = -0.5dBFS,

MAX5865

Ultra-Low-Power, High-Dynamic-

Performance, 40Msps Analog Front End

_______________________________________________________________________________________3

ELECTRICAL CHARACTERISTICS (continued)

(V DD = 3V, OV DD = 1.8V, internal reference (1.024V), C L ≈10pF on all digital outputs, f CLK = 40MHz, ADC input amplitude = -0.5dBFS,

M A X 5865

Ultra-Low-Power, High-Dynamic-

Performance, 40Msps Analog Front End 4_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V DD = 3V, OV DD = 1.8V, internal reference (1.024V), C L ≈10pF on all digital outputs, f CLK = 40MHz, ADC input amplitude = -0.5dBFS,DAC output amplitude = 0dBFS, differential ADC input, differential DAC output, C REFP = C REFN = C COM = 0.33μF, Xcvr mode, unless otherwise noted. Typical values are at T A = +25°C, unless otherwise noted.) (Note 1)

MAX5865

Ultra-Low-Power, High-Dynamic-

Performance, 40Msps Analog Front End

_______________________________________________________________________________________5

ELECTRICAL CHARACTERISTICS (continued)

(V DD = 3V, OV DD = 1.8V, internal reference (1.024V), C L ≈10pF on all digital outputs, f CLK = 40MHz, ADC input amplitude = -0.5dBFS,

M A X 5865

Ultra-Low-Power, High-Dynamic-

Performance, 40Msps Analog Front End 6_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V DD = 3V, OV DD = 1.8V, internal reference (1.024V), C L ≈10pF on all digital outputs, f CLK = 40MHz, ADC input amplitude = -0.5dBFS,

MAX5865

Ultra-Low-Power, High-Dynamic-

Performance, 40Msps Analog Front End

_______________________________________________________________________________________7

ELECTRICAL CHARACTERISTICS (continued)

guaranteed by design and characterization.

Note 2:The minimum clock frequency for the MAX5865 is 22MHz.

Note 3:SNR, SINAD, SFDR, HD3, and THD are based on a differential analog input voltage of -0.5dBFS referenced to the amplitude

of the digital outputs. SINAD and THD are calculated using HD2 through HD6.

Note 4:Guaranteed by design and characterization.

Note 5:Crosstalk rejection is measured by applying a high-frequency test tone to one channel and a low-frequency tone to the sec-ond channel. FFTs are performed on each channel. The parameter is specified as the power ratio of the first and second channel FFT test tone bins.

Note 6:Amplitude/phase matching is measured by applying the same signal to each channel, and comparing the magnitude and

phase of the fundamental bin on the calculated FFT.

Typical Operating Characteristics

(V DD = DV DD = 3V, OV DD = 1.8V, internal reference (1.024V), C L ≈10pF on all digital outputs, f CLK = 40MHz 50% duty cycle, ADC input amplitude = -0.5dBF S, DAC output amplitude = 0dBF S, differential ADC input, differential DAC output, C REFP = C REFN =C COM = 0.33μF, Xcvr mode, T A = +25°

C, unless otherwise noted.)

-110

-70-90-30-50-10-80-100-40-60-2000

48121620

ADC CHANNEL-IA FFT PLOT

FREQUENCY (MHz)

A M P L I T U D E (d

B F S )

-110

-70-90-30-50-10-80-100-40-60

-2000

48121620ADC CHANNEL-QA FFT PLOT

FREQUENCY (MHz)A M P L I T U D E (d B F S )

-110

-70-90-30-50-10-80-100-40-60-200

048121620

ADC CHANNEL-IA TWO-TONE FFT PLOT

FREQUENCY (MHz)

A M P L I T U D E (d

B F S )

M A X 5865

Ultra-Low-Power, High-Dynamic-

Performance, 40Msps Analog Front End 8_______________________________________________________________________________________

-80

-75-70-65-60-55-50

-45-400

100

125

ADC TOTAL HARMONIC DISTORTION vs. ANALOG INPUT FREQUENCY

M A X 5865 t o c 07

ANALOG INPUT FREQUENCY (MHz)

T H D (d B )

5560657075800

100

125

ADC SPURIOUS-FREE DYNAMIC RANGE

vs. ANALOG INPUT FREQUENCY

M A X 5865 t o c 08

ANALOG INPUT FREQUENCY (MHz)

S F D R (d B c )

4550

5565507570

100

125

ADC SPURIOUS-FREE DYNAMIC RANGE

vs. ANALOG INPUT FREQUENCY

ANALOG INPUT FREQUENCY (MHz)

S F D R (d B c )

01020

504060-24

-20

-16

-12

-8

-4

ADC SIGNAL-TO-NOISE RATIO vs. ANALOG INPUT POWER

ANALOG INPUT POWER (dBFS)

S N R (d B )

102030504060-24-20-16-12-8-40

ADC SIGNAL-TO-NOISE AND DISTORTION RATIO

vs. ANALOG INPUT POWER

ANALOG INPUT POWER (dBFS)

S I N A D (d B )

-80

-75

-70-65-35-40-45-55-60-50-30

-24

-20

-16

-12

-8

-4

ADC TOTAL HARMONIC DISTORTION

vs. ANALOG INPUT POWER

ANALOG INPUT POWER (dBFS)

T H D (d B )

Typical Operating Characteristics (continued)

-110

-70-90-30-50-10-80-100-40-60-2000

121620ADC CHANNEL-QA TWO-TONE FFT PLOT

FREQUENCY (MHz)A M P L I T U D E (d B F S )

46.0

46.547.047.548.048.549.049.550.00255075100125

ADC SIGNAL-TO-NOISE RATIO vs. ANALOG INPUT FREQUENCY

ANALOG INPUT FREQUENCY (MHz)

S N R (d B )46.0

46.5

47.047.548.048.549.049.550.0

100

125

ADC SIGNAL-TO-NOISE AND DISTORTION RATIO

vs. ANALOG INPUT FREQUENCY

ANALOG INPUT FREQUENCY (MHz)

S I N A D (d B )

MAX5865

Ultra-Low-Power, High-Dynamic-

Performance, 40Msps Analog Front End

_______________________________________________________________________________________9

-80

-75-70-55-60

-65-5022

ADC TOTAL HARMONIC DISTORTION

vs. SAMPLING RATE

SAMPLING RATE (MHz)

T H D (d B )

55607570658022

ADC SPURIOUS-FREE DYNAMIC RANGE

vs. SAMPLING RATE

SAMPLING RATE (MHz)

S F D R (d B c )

ADC SIGNAL-TO-NOISE RATIO vs. CLOCK DUTY CYCLE

CLOCK DUTY CYCLE (%)

S N R (d B )

ADC SIGNAL-TO-NOISE AND DISTORTION

RATIO vs. CLOCK DUTY CYCLE

CLOCK DUTY CYCLE (%)

S I N A D (d B )

4530

-80

-78-74

-62-66

-70-76-64-68-72-6030

506070

ADC TOTAL HARMONIC DISTORTION

vs. CLOCK DUTY CYCLE

CLOCK DUTY CYCLE (%)

T H D

(d B )

556575607080

3040

5060

ADC SPURIOUS-FREE DYNAMIC RANGE

vs. CLOCK DUTY CYCLE

CLOCK DUTY CYCLE (%)

S F D R (d B c )

Typical Operating Characteristics (continued)

(V DD = DV DD = 3V, OV DD = 1.8V, internal reference (1.024V), C L ≈

10pF on all digital outputs, f CLK = 40MHz 50% duty cycle, ADC input amplitude = -0.5dBF S, DAC output amplitude = 0dBF S, differential ADC input, differential DAC output, C REFP = C REFN =C COM = 0.33μF, Xcvr mode, T A = +25°C, unless otherwise noted.)

3035404575706555506080-24

-20

-16

-12

-8

-4

ADC SPURIOUS-FREE DYNAMIC RANGE

vs. ANALOG INPUT POWER

ANALOG INPUT POWER (dBFS)

S F D R (d B

c )

45464948475022

ADC SIGNAL-TO-NOISE RATIO

vs. SAMPLING RATE

SAMPLING RATE (MHz)

S N R (d B )

4948

ADC SIGNAL-TO-NOISE AND DISTORTION RATIO

vs. SAMPLING RATE

SAMPLING RATE (MHz)

S I N A D (d B )

M A X 5865

Ultra-Low-Power, High-Dynamic-

Performance, 40Msps Analog Front End 10______________________________________________________________________________________

DAC SPURIOUS-FREE DYNAMIC RANGE

vs. SAMPLING RATE

SAMPLING RATE (MHz)

S F D R (d B c )

3836323426283024626466687072747678806022

DAC SPURIOUS-FREE DYNAMIC RANGE

vs. OUTPUT FREQUENCY

M A X 5865 t o c 26

FREQUENCY (MHz)

S F D R (d B c )

1510

5556065

70758050

020

DAC SPURIOUS-FREE DYNAMIC RANGE

vs. OUTPUT POWER

OUTPUT POWER (dBFS)

S F D R (d B c )

-5-10-15-20-25405060708090

-300

DAC CHANNEL-ID SPECTRAL PLOT

FREQUENCY (MHz)A M P L I T U D E (d B )

15105

-90-80-70-60-50-40-30-20-100-100

DAC CHANNEL-QD SPECTRAL PLOT

FREQUENCY (MHz)

A M P L I T U D E (d

B )

1510

5-90-80-70-60-50-40-30-20-100-100

0DAC CHANNEL-ID TWO-TONE

SPECTRAL PLOT

FREQUENCY (MHz)

A M P L I T U D E (d

B )

18.0

14.511.07.54.0-90-80-70-60-50-40-30-20-100

-100

0.5

Typical Operating Characteristics (continued)

-1.0

-0.800.8-0.40.4-0.20.6-0.60.21.0-40

-15

ADC OFFSET ERROR vs. TEMPERATURE

M A X 5865 t o c 22

TEMPERATURE (°C)

O F F S E T E R R O R (%F S )

00.2

1.01.80.61.40.81.60.41.2

2.0-40

-15

ADC GAIN ERROR vs. TEMPERATURE

M A X 5865 t o c 23

TEMPERATURE (°C)

G A I N E R R O R (%F S )

010

205

152522

SUPPLY CURRENT vs. SAMPLING RATE

SAMPLING RATE (MHz)

S U P P L Y C U R R E N T (m A )

分销商库存信息:

MAXIM

MAX5865ETM+MAX5865ETM+T