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參數(shù)資料
| 型號： | LTC2207IUK |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 16-Bit, 105Msps/80Msps ADCs |
| 中文描述： | 1-CH 16-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48 |
| 封裝： | 7 X 7 MM, PLASTIC, MO-220WKKD-2, QFN-48 |
| 文件頁數(shù)： | 23/32頁 |
| 文件大?。?/td> | 1489K |
| 代理商： | LTC2207IUK |
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LTC2207/LTC2206
23
22076fa
DIGITAL OUTPUTS
Digital Output Buffers
Figure 11 shows an equivalent circuit for a single output
buffer. Each buffer is powered by OV
DD
and OGND, isolated
from the ADC power and ground. The additional N-channel
transistor in the output driver allows operation down to
low voltages. The internal resistor in series with the output
eliminates the need for external damping resistors.
As with all high speed/high resolution converters, the digi-
tal output loading can affect the performance. The digital
outputs of the LTC2207/LTC2206 should drive a minimum
capacitive load to avoid possible interaction between the
digital outputs and sensitive input circuitry. The output
should be buffered with a device such as a ALVCH16373
CMOS latch. For full speed operation the capacitive load
should be kept under 10pF. A resistor in series with the
output may be used but is not required since the output
buffer has a series resistor of 33
Ω
on chip.
Lower OV
DD
voltages will also help reduce interference
from the digital outputs.
Data Format
The LTC2207/LTC2206 parallel digital output can be
selected for offset binary or 2’s complement format. The
format is selected with the MODE pin. This pin has a four
level logic input, centered at 0, 1/3V
DD
, 2/3V
DD
and V
DD
.
An external resistor divider can be user to set the 1/3V
DD
and 2/3V
DD
logic levels. Table 1 shows the logic states
for the MODE pin.
LTC2207/LTC2206
22076 F11
OV
DD
V
DD
V
DD
0.1
μ
F
TYPICAL
DATA
OUTPUT
OGND
OV
DD
0.5V
TO 3.6V
PREDRIVER
LOGIC
DATA
FROM
LATCH
33
Figure 11. Equivalent Circuit for a Digital Output Buffer
Table 1. MODE Pin Function
MODE
0(GND)
1/3V
DD
2/3V
DD
V
DD
Output Format
Offset Binary
Offset Binary
2’s Complement
2’s Complement
Clock Duty
Cycle Stabilizer
Off
On
On
Off
Overflow Bit
An overflow output bit (OF) indicates when the converter
is over-ranged or under-ranged. A logic high on the OF
pin indicates an overflow or underflow.
Output Clock
The ADC has a delayed version of the encode input available
as a digital output. Both a noninverted version, CLKOUT+
and an inverted version CLKOUT– are provided. The
CLKOUT+/CLKOUT– can be used to synchronize the con-
verter data to the digital system. This is necessary when
using a sinusoidal encode. Data can be latched on the
rising edge of CLKOUT+ or the falling edge of CLKOUT–.
CLKOUT+ falls and CLKOUT– rises as the data outputs
are updated.
Figure 12. Functional Equivalent of Digital Output Randomizer
CLKOUT
+
OF
D15/D0
D14/D0
D2/D0
D1/D0
D0
D0
D1
RAND = HIGH,
SCRAMBLE
ENABLED
D2
D14
D15
OF
LTC2207/LTC2206
CLKOUT
RAND
22076 F12
APPLICATIONS INFORMATION
相關PDF資料 |
PDF描述 |
|---|---|
| LTC2207UK | 16-Bit, 105Msps/80Msps ADCs |
| LTC2208-14 | 14-Bit, 130Msps ADC |
| LTC2208CUP-14 | 14-Bit, 130Msps ADC |
| LTC2208IUP-14 | 14-Bit, 130Msps ADC |
| LTC2208UP-14 | 14-Bit, 130Msps ADC |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2207IUK#PBF | 制造商:Linear Technology 功能描述:ADC Single Pipelined 105Msps 16-bit Parallel 48-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 16-BIT 105MSPS 48-QFN 制造商:Linear Technology 功能描述:ADC 16BIT 105MSPS 48QFN 制造商:Linear Technology 功能描述:IC, ADC, 16BIT, 105MSPS, QFN-48; Resolution (Bits):16bit; Sampling Rate:105MSPS; Supply Voltage Type:Single; Supply Voltage Min:3.135V; Supply Voltage Max:3.465V; Supply Current:273mA; Digital IC Case Style:QFN; No. of Pins:48 ;RoHS Compliant: Yes |
| LTC2207IUK#TRPBF | 制造商:Linear Technology 功能描述:ADC Single Pipelined 105Msps 16-bit Parallel 48-Pin QFN EP T/R 制造商:Linear Technology 功能描述:IC ADC 16BIT 105MSPS 48-QFN |
| LTC2207IUK-14 | 制造商:Linear Technology 功能描述:ADC Single Pipelined 105Msps 14-bit Parallel 48-Pin QFN EP |
| LTC2207IUK-14#PBF | 功能描述:IC ADC 14BIT 105MSPS 48-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:250 系列:- 位數(shù):12 采樣率（每秒）:1.8M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:1.82W 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-LQFP 供應商設備封裝:48-LQFP（7x7） 包裝:管件 輸入數(shù)目和類型:2 個單端，單極 |
| LTC2207IUK-14#TRPBF | 功能描述:IC ADC 14BIT 105MSPS 48-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
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