MAX2837(2008) データシートの表示（PDF） - Maxim Integrated

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MAX2837
(Rev.:2008)

2.3GHz to 2.7GHz Wireless Broadband RF Transceiver

Maxim Integrated 

2.3GHz to 2.7GHz Wireless

Broadband RF Transceiver

AC ELECTRICAL CHARACTERISTICS—MISCELLANEOUS BLOCKS

(MAX2837 evaluation kit: VCC_ = 2.8V, fREF = 40MHz, ENABLE = CS = high, SCLK = DIN = low, TA = +25°C, unless otherwise noted.)

(Note 1)

PARAMETER

CONDITIONS

PA BIAS DAC: CURRENT MODE

Numbers of Bits

Minimum Output Sink Current D5:D0 = 000000 in A4:A0 = 11100

Maximum Output Sink Current D5:D0 = 111111 in A4:A0 = 11100

Compliance Voltage Range

Turn-On Time

Excludes programmable delay of 0 to 7μs in steps

of 0.5μs

DNL

PA BIAS DAC: VOLTAGE MODE

Output High Level

10mA source current

Output Low Level

Turn-On Time

CRYSTAL OSCILLATOR

On-Chip Tuning Capacitance

Range

10mA sink current

Excludes programmable delay of 0 to 7μs in steps

of 0.5μs

Maximum capacitance, A4:A0 = 11000,

D6:D0 =1111111

Minimum capacitance, A4:A0 = 11000,

D6:D0 =0000000

MIN TYP MAX UNITS

6

Bits

0

μA

310

μA

0.8

2.0

V

200

ns

1

LSB

VCC -

V

0.2

0.1

V

200

ns

15.5

pF

0.5

On-Chip Tuning Capacitance

Step Size

ON-CHIP TEMPERATURE SENSOR

Digital Output Code

Read-out at DOUT pin through SPI

A4:A0 = 00111, D4:D0

TA = +25°C

TA = +85°C

TA = -40°C

0.12

pF

01111

11101

00001

AC ELECTRICAL CHARACTERISTICS—TIMING

(MAX2837 evaluation kit: VCC_ = 2.8V, fLO = 2.5GHz, fREF = 40MHz, ENABLE = CS = high, SCLK = DIN = low, PLL loop bandwidth =

120kHz, TA = +25°C, unless otherwise noted.) (Note 1)

PARAMETER

SYSTEM TIMING

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Turnaround Time

Measured from Tx or

Rx enable rising

Rx to Tx

2

edge; signal settling

µs

to within 0.5dB of

Tx to Rx, RXHP = 1

2

steady state

Tx Turn-On Time

(from Standby Mode)

Measured from Tx enable rising edge; signal

settling to within 0.5dB of steady state

2

µs

8 _______________________________________________________________________________________

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