- 您现在的位置：买卖IC网 > PDF目录10157 > LTC1605-1IG#PBF (Linear Technology)IC A/D CONV 16BIT SAMPLNG 28SSOP PDF资料下载
参数资料
| 型号： | LTC1605-1IG#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 18/20页 |
| 文件大小： | 0K |
| 描述： | IC A/D CONV 16BIT SAMPLNG 28SSOP |
| 标准包装： | 47 |
| 位数： | 16 |
| 采样率（每秒）： | 100k |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 80mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 管件 |
| 输入数目和类型： | 1 个单端，双极 |
| 配用： | DC1255A-A-ND - BOARD SAR ADC LTC1605 |
7
LTC1605-1/LTC1605-2
APPLICATIONS INFORMATION
WU
U
autozero switch, S3. In this acquire phase, a minimum
delay of 2
swillprovideenoughtimeforthesample-and-
hold capacitor to acquire the analog signal. During the
convert phase, S3 opens, putting the comparator into the
compare mode. The input switch S2 switches CSAMPLE to
ground, injecting the analog input charge onto the sum-
ming junction. This input charge is successively com-
pared with the binary-weighted charges supplied by the
capacitive DAC. Bit decisions are made by the high speed
comparator. At the end of a conversion, the DAC output
balances the VIN input charge. The SAR contents (a 16-
bit data word) that represents the VIN are loaded into the
16-bit output latches.
Driving the Analog Inputs
The nominal input range for the LTC1605-1 is 0V to 4V or
(1.6VREF) and for the LTC1605-2 the input range is ±4V
or (
±1.6VREF). The inputs are overvoltage protected to
±25V. The input impedance is typically 10k; therefore,
it should be driven by a low impedance source. Wideband
noise coupling into the input can be minimized by placing
a 1000pF capacitor at the input as shown in Figure 2. An
NPO-type capacitor gives the lowest distortion. Place the
capacitor as close to the device input pin as possible. If
an amplifier is to be used to drive the input, care should
be taken to select an amplifier with adequate accuracy,
linearity and noise for the application. The following list
is a summary of the op amps that are suitable for driving
the LTC1605-1/LTC1605-2. More detailed information is
available in the Linear Technology data books and
LinearView
TM CD-ROM.
Conversion Details
The LTC1605-1/LTC1605-2 use a successive approxi-
mation algorithm and an internal sample-and-hold cir-
cuit to convert an analog signal to a 16-bit or two byte
parallel output. The ADC is complete with a precision
reference and an internal clock. The control logic pro-
vides easy interface to microprocessors and DSPs. (Please
refer to the Digital Interface section for the data format.)
Conversion start is controlled by the CS and R/C inputs.
At the start of conversion, the successive approximation
register (SAR) is reset. Once a conversion cycle has
begun, it cannot be restarted.
During the conversion, the internal 16-bit capacitive DAC
output is sequenced by the SAR from the most significant
bit (MSB) to the least significant bit (LSB). Referring to
Figure 1, VIN is connected through the resistor divider
and S1 to the sample-and-hold capacitor during the
acquire phase and the comparator offset is nulled by the
Figure 1. LTC1605-1/LTC1605-2 Simplified Equivalent Circuit
VDAC
1605-1/2 F01
+
–
CDAC
DAC
S1
SAMPLE
S2
HOLD
CSAMPLE
S
A
R
16-BIT
LATCH
COMPARATOR
SAMPLE
S3
RIN2
RIN1
VIN
LinearView is a trademark of Linear Technology Corporation
1k
50pF
DBN
1k
5V
1605-1/2 TC02
A. VOH TO HI-Z
B. VOL TO HI-Z
Load Circuit for Access Timing
Load Circuit for Output Float Delay
1k
CL
DBN
1k
5V
1605-1/2 TC01
A. HI-Z TO VOH AND VOL TO VOH
B. HI-Z TO VOL AND VOH TO VOL
TEST CIRCUITS
相关PDF资料 |
PDF描述 |
|---|---|
| ADM3311EARS-REEL | IC TXRX RS-232 3:5 2.7V 28SSOP |
| VE-B5Y-MW | CONVERTER MOD DC/DC 3.3V 66W |
| VI-BNY-MV-F4 | CONVERTER MOD DC/DC 3.3V 99W |
| LTC1605-1IG | IC A/D CONV 16BIT SAMPLNG 28SSOP |
| VI-BNY-MV-F3 | CONVERTER MOD DC/DC 3.3V 99W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1605-1IN | 功能描述:IC ADC 16BIT 5V SAMPLING 28DIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| LTC1605-1IN#PBF | 功能描述:IC A/D CONV 16BIT SAMPLNG 28-DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率（每秒）:3M 数据接口:- 转换器数目:- 功率耗散（最大）:- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:- |
| LTC1605-2CG | 功能描述:IC A/D CONV 16BIT SAMPLNG 28SSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| LTC1605-2CG#PBF | 功能描述:IC A/D CONV 16BIT SAMPLNG 28SSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| LTC1605-2CG#TR | 功能描述:IC ADC 16BIT 5V SAMPLING 28SSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
发布紧急采购，3分钟左右您将得到回复。