參數(shù)資料
型號(hào)： KAD5610P-25Q72
廠商： Intersil
文件頁數(shù)： 15/30頁
文件大?。?/td> 0K
描述： IC ADC 10BIT 250MSPS DUAL 72-QFN
產(chǎn)品培訓(xùn)模塊： High-Speed Analog-to-Digital Converters
標(biāo)準(zhǔn)包裝： 1
系列： FemtoCharge™
位數(shù)： 10
采樣率（每秒）： 250M
數(shù)據(jù)接口： 串行，SPI?
轉(zhuǎn)換器數(shù)目： 2
功率耗散（最大）： 438mW
電壓電源： 單電源
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 72-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 72-QFN（10x10）
包裝： 托盤
輸入數(shù)目和類型： 2 個(gè)差分，單極
22
FN6810.2
September 10, 2009
burst_end address determines the end of the transfer.
During a write operation, the user must be cautious to
transmit the correct number of bytes based on the starting
and ending addresses.
Bits 7:0 Burst End Address
This register value determines the ending address of the
burst data.
Device Information
ADDRESS 0X08: CHIP_ID
ADDRESS 0X09: CHIP_VERSION
The generic die identifier and a revision number,
respectively, can be read from these two registers.
Indexed Device Configuration/Control
ADDRESS 0X10: DEVICE_INDEX_A
A common SPI map, which can accommodate single-
channel or multi-channel devices, is used for all Intersil ADC
products. Certain configuration commands (identified as
Indexed in the SPI map) can be executed on a per-converter
basis. This register determines which converter is being
addressed for an Indexed command. It is important to note
that only a single converter can be addressed at a time.
This register defaults to 00h, indicating that no ADC is
addressed. Error code ‘AD’ is returned if any indexed
register is read from without properly setting
device_index_A.
ADDRESS 0X20: OFFSET_COARSE
ADDRESS 0X21: OFFSET_FINE
The input offset of each ADC core can be adjusted in fine
and coarse steps. Both adjustments are made via an 8-bit
word as detailed in Table 7.
The default value of each register will be the result of the
self-calibration after initial power-up. If a register is to be
incremented or decremented, the user should first read the
register value then write the incremented or decremented
value back to the same register.
ADDRESS 0X22: GAIN_COARSE
ADDRESS 0X23: GAIN_MEDIUM
ADDRESS 0X24: GAIN_FINE
Gain of the ADC core can be adjusted in coarse, medium
and fine steps. Coarse gain is a 4-bit adjustment while
medium and fine are 8-bit. Multiple Coarse Gain Bits can be
set for a total adjustment range of ±4.2%. ( ‘0011’ =~ -4.2%
and ‘1100’ =~ +4.2% ) It is recommended to use one of the
coarse gain settings (-4.2%, -2.8%, -1.4%, 0, 1.4%, 2.8%,
4.2%) and fine-tune the gain using the registers at 23h and
24h.
The default value of each register will be the result of the
self-calibration after initial power-up. If a register is to be
incremented or decremented, the user should first read the
register value then write the incremented or decremented
value back to the same register.
ADDRESS 0X25: MODES
Two distinct reduced power modes can be selected. By
default, the tri-level NAPSLP pin can select normal
operation, nap or sleep modes (refer to “Nap/Sleep” on
page 17). This functionality can be overridden and controlled
through the SPI. This is an indexed function when controlled
from the SPI, but a global function when driven from the pin.
This register is not changed by a Soft Reset.
TABLE 7. OFFSET ADJUSTMENTS
PARAMETER
0x20[7:0]
COARSE OFFSET
0x21[7:0]
FINE OFFSET
Steps
255
–Full Scale (0x00)
-133LSB (-47mV)
-5LSB (-1.75mV)
Mid–Scale (0x80)
0.0LSB (0.0mV)
0.0LSB
+Full Scale (0xFF)
+133LSB (+47mV)
+5LSB (+1.75mV)
Nominal Step Size
1.04LSB (0.37mV)
0.04LSB (0.014mV)
TABLE 8. COARSE GAIN ADJUSTMENT
0x22[3:0]
NOMINAL COARSE GAIN ADJUST
(%)
Bit3
+2.8
Bit2
+1.4
Bit1
-2.8
Bit0
-1.4
TABLE 9. MEDIUM AND FINE GAIN ADJUSTMENTS
PARAMETER
0x23[7:0]
MEDIUM GAIN
0x24[7:0]
FINE GAIN
Steps
256
–Full Scale (0x00)
-2%
-0.20%
Mid–Scale (0x80)
0.00%
+Full Scale (0xFF)
+2%
+0.2%
Nominal Step Size
0.016%
0.0016%
TABLE 10. POWER-DOWN CONTROL
VALUE
0x25[2:0]
POWER-DOWN MODE
000
Pin Control
001
Normal Operation
010
Nap Mode
100
Sleep Mode
KAD5610P
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