- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10707 > ADS8364Y/250 (Texas Instruments)IC ADC LP 16BIT 250KSPS 64TQFP PDF資料下載
參數(shù)資料
| 型號(hào)： | ADS8364Y/250 |
| 廠商： | Texas Instruments |
| 文件頁(yè)數(shù)： | 2/26頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC LP 16BIT 250KSPS 64TQFP |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Basics |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 250k |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 6 |
| 功率耗散（最大）： | 471.5mW |
| 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： | 64-TQFP |
| 供應(yīng)商設(shè)備封裝： | 64-TQFP（10x10） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 輸入數(shù)目和類型： | 12 個(gè)單端，雙極；6 個(gè)差分，雙極 |
| 產(chǎn)品目錄頁(yè)面： | 893 (CN2011-ZH PDF) |
| 配用： | 296-30708-ND - EVAL MODULE FOR ADS8364 ADS8364EVM-ND - EVALUATION MODULE FOR BQ2018 |
| 其它名稱： | 296-13449-6 |
第1頁(yè)當(dāng)前第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)
ADS8364
10
SBAS219C
www.ti.com
INTRODUCTION
The ADS8364 is a high-speed, low-power, 6-channel simul-
taneous sampling and converting, 16-bit ADC that operates
from a single +5V supply. The input channels are fully
differential with a typical common-mode rejection of 80dB.
The part contains six 4
s successive approximation ADCs,
six differential sample-and-hold amplifiers, an internal +2.5V
reference with REFIN and REFOUT pins and a high-speed
parallel interface. There are six analog inputs that are grouped
into three channel pairs (A, B, and C). There are six ADCs,
one for each input that can be sampled and converted
simultaneously, thus preserving the relative phase informa-
tion of the signals on both analog inputs. Each pair of
channels has a hold signal (HOLDA, HOLDB, and HOLDC)
to allow simultaneous sampling on each channel pair, on
four or on all six channels. The part accepts a differential
analog input voltage in the range of –VREF to +VREF, centered
on the common-mode voltage (see the Analog Input Section).
The part will also accept bipolar input ranges when a level shift
circuit is used at the front end (see Figure 6).
A conversion is initiated on the ADS8364 by bringing the
HOLDX pin LOW for a minimum of 20ns. HOLDX LOW
places the sample-and-hold amplifiers of the X channels in
the hold state simultaneously and the conversion process is
started on each channel. The EOC output will go LOW for
half a clock cycle when the conversion is latched into the
output register. The data can be read from the parallel output
bus following the conversion by bringing both RD and CS
LOW.
Conversion time for the ADS8364 is 3.2
s when a 5MHz
external clock is used. The corresponding acquisition time is
0.8
s. To achieve the maximum output data rate (250kSPS),
the read function can be performed during the next conver-
sion. Note: This mode of operation is described in more
detail in the Timing and Control section of this data sheet.
SAMPLE-AND-HOLD SECTION
The sample-and-hold amplifiers on the ADS8364 allow the
ADCs to accurately convert an input sine wave of full-scale
amplitude to 16-bit resolution. The input bandwidth of the
sample-and-hold is greater than the Nyquist rate (Nyquist
equals one-half of the sampling rate) of the ADC even when
the ADC is operated at its maximum throughput rate of
250kSPS. The typical small-signal bandwidth of the sample-
and-hold amplifiers is 300MHz.
Typical aperture delay time or the time it takes for the
ADS8364 to switch from the sample to the hold mode
following the negative edge of HOLDX signal is 5ns. The
average delta of repeated aperture delay values is typically
50ps (also known as aperture jitter). These specifications
reflect the ability of the ADS8364 to capture AC input signals
accurately at the exact same moment in time.
REFERENCE
Under normal operation, the REFOUT (pin 61) can directly be
connected to the REFIN pin (pin 62) to provide an internal
+2.5V reference to the ADS8364. The ADS8364 can
operate, however, with an external reference in the range of
1.5V to 2.6V, for a corresponding full-scale range of 3.0V to
5.2V, as long as the input does not exceed the AVDD + 0.3V
value.
The reference of the ADS8364 is double-buffered. If the
internal reference is used to drive an external load, a buffer
is provided between the reference and the load applied to pin
61 (the internal reference can typically source 10
A of
current—load capacitance should be 0.1
F and 10F to
minimize noise). If an external reference is used, the three-
second buffers provide isolation between the external refer-
ence and the CDACs. These buffers are also used to
recharge all of the capacitors of all CDACs during conver-
sion.
ANALOG INPUT
The analog input is bipolar and fully differential. There are two
general methods of driving the analog input of the ADS8364:
single-ended or differential, as shown in Figure 1 and
Figure 2. When the input is single-ended, the –IN input is held
at the common-mode voltage. The +IN input swings around
the same common voltage and the peak-to-peak amplitude is
the (common-mode + VREF) and the (common-mode – VREF).
The value of VREF determines the range over which the
common-mode voltage may vary (see Figure 3).
FIGURE 1. Methods of Driving the ADS8364 Single-Ended or
Differential.
ADS8364
Single-Ended Input
Common
Voltage
–V
REF to +VREF
peak-to-peak
Differential Input
Common
Voltage
V
REF
peak-to-peak
V
REF
peak-to-peak
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VE-J1N-MY-F1 | CONVERTER MOD DC/DC 18.5V 50W |
| VI-BTW-MY-B1 | CONVERTER MOD DC/DC 5.5V 50W |
| VI-J1N-MY-F4 | CONVERTER MOD DC/DC 18.5V 50W |
| VI-BTV-MY-B1 | CONVERTER MOD DC/DC 5.8V 50W |
| FIN1019MX | IC DRVR/RCVR 3.3V HS LVDS 14SOIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS8365 | 制造商:BB 制造商全稱:BB 功能描述:16-Bit, 250kSPS, 6-Channel, Simultaneous Sampling SAR ANALOG-TO-DIGITAL CONVERTERS |
| ADS8365IPAG | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16B 250kSPS 6Ch Simu Sampling SAR ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS8365IPAGG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16B 250kSPS 6Ch Simu Sampling SAR ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS8365IPAGG-4 | 制造商:Texas Instruments 功能描述:IC, SM 16-BIT ADC 6CH SAR |
| ADS8365IPAGR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16 B 250k SPS 6 Ch Smltns Smplg SARADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。