max2370 Maxim Integrated Products, Inc., max2370 Datasheet - Page 15

• Manufacturer Part Number: max2370
• Description: Max2370 Complete 450mhz Quadrature Transmitter
• Manufacturer: Maxim Integrated Products, Inc.

Table 5. Typical Current Scale Factors
Set By I_MULT Bits
Table 7. RF Turbo Charge-Pump Current Setting
Table 8. Power-Down Modes
RCP_TURBO1
POWER-DOWN MODE
RF_PLL_SHDN Bit
BIT NAME
IF_PLL_SHDN Bit
I_MULT
TXGATE Pin
TXSTBY Bit
0
0
1
1
SHDN Pin
IDLE Pin
Complete 450MHz Quadrature Transmitter
______________________________________________________________________________________
RCP_TURBO2
1000 (default)
0
1
0
1
Ultra-low shutdown current
Rx only mode
For punctured Tx mode
For external RF PLL use
For external IF PLL use
Tx is OFF, but IF and RF LOs stay locked
BITS
0011
0100
0101
0110
0111
1001
1010
1011
1100
No turbo current. Charge-pump current is set by RCP bits.
Turbo current turns on every time RF PLL is reprogrammed. Turbo current is automatically
turned off after RF PLL is locked.
Turbo current is always on.
Turbo current is turned on every time RF PLL is out of lock.
COMMENTS
SCALE FACTOR
CURRENT
NOMINAL
0.69
0.75
0.81
0.88
0.94
1.00
1.13
1.25
1.38
1.50
Table 6. Typical Throttleback Rate Set By
THROTTLE_BACK Bits
THROTTLE_BACK
BIT NAME
OFF
OFF
OFF
OFF
—
—
FUNCTION
OFF
OFF
OFF
OFF
—
—
BITS
000
001
010
011
100
101
110
111
OFF
OFF
—
—
—
—
OFF
OFF
—
—
—
—
NOMINAL RATE
(dBmA/dB)
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
OFF
OFF
OFF
—
—
—
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