參數(shù)資料
型號(hào): AD9627-125EBZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 29/76頁(yè)
文件大?。?/td> 0K
描述: IC A/D 12BIT 125MSPS DL EVAL BRD
標(biāo)準(zhǔn)包裝: 1
ADC 的數(shù)量: 2
位數(shù): 12
采樣率(每秒): 125M
數(shù)據(jù)接口: 串行
輸入范圍: 2 Vpp
在以下條件下的電源(標(biāo)準(zhǔn)): 900mW @ 125MSPS
工作溫度: -40°C ~ 85°C
已用 IC / 零件: AD9627
已供物品: 板,電源
AD9627
Rev. B | Page 35 of 76
Increment Gain (IG) and Decrement Gain (DG)
The increment gain and decrement gain indicators are intended
to be used together to provide information to enable external
gain control. The decrement gain indicator works in conjunction
with the coarse upper threshold bits, asserting when the input
magnitude is greater than the 3-bit value in the coarse upper
threshold register (Address 0x105). The increment gain indicator,
similarly, corresponds to the fine lower threshold bits, except
that it is asserted only if the input magnitude is less than the
value programmed in the fine lower threshold register after the
dwell time elapses. The dwell time is set by the 16-bit dwell time
value located at Address 0x10A and Address 0x10B and is set in
units of ADC input clock cycles ranging from 1 to 65,535. The
fine lower threshold register is a 13-bit register that is compared
with the magnitude at the output of the ADC. This comparison
is subject to the ADC clock latency but allows a finer, more
accurate comparison. The fine upper threshold magnitude is
defined by the following equation:
dBFS = 20 log(Threshold Magnitude/213)
The decrement gain output works from the ADC fast detect
output pins, providing a fast indication of potential overrange
conditions. The increment gain uses the comparison at the
output of the ADC, requiring the input magnitude to remain
below an accurate, programmable level for a predefined period
before signaling external circuitry to increase the gain.
The operation of the increment gain output and the decrement
gain output is shown in Figure 67.
UPPER THRESHOLD (COARSE OR FINE)
FINE LOWER THRESHOLD
IG
DG
F_LT
C_UT OR F_UT*
DWELL TIME
TIMER RESET BY
RISE ABOVE F_LT
TIMER COMPLETES BEFORE
SIGNAL RISES ABOVE F_LT
NOTE: OUTPUTS FOLLOW THE INSTANTANEOUS SIGNAL LEVEL AND NOT THE ENVELOPE BUT ARE GUARANTEED ACTIVE FOR A MINIMUM OF 2 ADC CLOCK CYCLES.
*C_UT AND F_UT DIFFER ONLY IN ACCURACY AND LATENCY.
DWELL TIME
0
65
71
-0
67
Figure 67. Threshold Settings for C_UT, F_UT, IG, DG, and F_LT
相關(guān)PDF資料
PDF描述
RSC13DRXI CONN EDGECARD 26POS DIP .100 SLD
AD9238BCP-65EBZ BOARD EVAL WITH AD9238BCP-65
1210R-100K COIL .010UH PHENOLIC SMD
RSC15DRXH CONN EDGECARD 30POS DIP .100 SLD
AD9216-80PCBZ BOARD EVAL FOR AD9216 80MSPS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9627-150EBZ 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 12Bit 150 Msps Dual 1.8V PB Free ADC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
AD9627ABCPZ-105 功能描述:IC ADC 12BIT 105MSPS 64LFCSP 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(biāo)準(zhǔn)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(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端,雙極
AD9627ABCPZ11-105 功能描述:IC ADC 11BIT 105MSPS 64LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率(每秒):20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散(最大):155mW 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-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP(7x7) 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個(gè)單端,單極;2 個(gè)差分,單極 產(chǎn)品目錄頁(yè)面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD9627ABCPZ11-150 功能描述:IC ADC 11BIT 150MSPS 64LFCSP 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(biāo)準(zhǔn)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(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端,雙極
AD9627ABCPZ-125 功能描述:IC ADC 12BIT 1255MSPS 64LFCSP 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(biāo)準(zhǔn)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(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個(gè)單端,雙極