參數資料
| 型號： | KAD5510P-25Q48 |
| 廠商： | Intersil |
| 文件頁數： | 15/31頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT CMOS 250MSPS 48QFN |
| 標準包裝： | 40 |
| 系列： | FemtoCharge™ |
| 位數： | 10 |
| 采樣率（每秒）： | 250M |
| 數據接口： | 串行，SPI? |
| 轉換器數目： | 1 |
| 功率耗散（最大）： | 254mW |
| 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： | 48-VFQFN 裸露焊盤 |
| 供應商設備封裝： | 48-QFN（7x7） |
| 包裝： | 托盤 |
| 輸入數目和類型： | * |
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KAD5510P
22
FN7693.2
May 2, 2011
Bit 6 LSB First
Setting this bit high configures the SPI to interpret serial data
as arriving in LSB to MSB order.
Bit 5 Soft Reset
Setting this bit high resets all SPI registers to default values.
Bit 4 Reserved
This bit should always be set high.
Bits 3:0 These bits should always mirror bits 4:7 to avoid
ambiguity in bit ordering.
ADDRESS 0X02: BURST_END
If a series of sequential registers are to be set, burst mode can
improve throughput by eliminating redundant addressing. In
3-wire SPI mode the burst is ended by pulling the CSB pin high. If
the device is operated in
2-wire mode the CSB pin is not available. In that case, setting the
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. Therefore Bit 0 must be set high in order to execute
any Indexed commands. Error code ‘AD’ is returned if any
indexed register is read from without properly setting
device_index_A.
ADDRESS 0X20: OFFSET_COARSE AND
ADDRESS 0X21: OFFSET_FINE
The input offset of the ADC core can be adjusted in fine and
coarse steps. Both adjustments are made via an 8-bit word as
detailed in Table 4.
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.
TABLE 4. 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 5. COARSE GAIN ADJUSTMENT
0x22[3:0]
NOMINAL COARSE GAIN ADJUST
(%)
Bit3
+2.8
Bit2
+1.4
Bit1
-2.8
Bit0
-1.4
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