参数资料
| 型号： | LTC6416IDDB#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC DIFF 16BIT BUFFER 10-DFN |
| 标准包装： | 2,500 |
| 放大器类型： | 缓冲器 |
| 电路数： | 1 |
| 输出类型： | 差分 |
| 转换速率： | 3400 V/µs |
| -3db带宽： | 2GHz |
| 电流 - 输入偏压： | 5µA |
| 电压 - 输入偏移： | 500µV |
| 电流 - 电源： | 42mA |
| 电流 - 输出 / 通道： | 20mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 3.9 V，±1.35 V ~ 1.95 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN-EP（3x2） |
| 包装： | 带卷 (TR) |
LTC6416
1
6416f
The LTC6416 is a differential unity gain buffer designed
to drive 16-bit ADCs with extremely low output noise
and excellent linearity beyond 300MHz. Differential input
impedance is 12kΩ, allowing 1:4 and 1:8 transformers to
be used at the input to achieve additional system gain.
With no external biasing or gain setting components and
a ow-through pinout, the LTC6416 is very easy to use.
It can be DC-coupled and has a common mode output
offset of –40mV. If the input signals are AC-coupled, the
LTC6416 input pins are internally biased to provide an
output common mode voltage that is set by the voltage
on the VCM pin.
In addition the LTC6416 has high speed, fast recovery
clamping circuitry to limit output signal swing. Both the
high and low clamp voltages are internally biased to allow
maximum output swing but are also user programmable
via the CLLO and CLHI pins.
Supply current is nominally 42mA and the LTC6416 oper-
ates on supply voltages ranging from 2.7V to 3.9V.
The LTC6416 is packaged in a 10-lead 3mm
× 2mm DFN
package. Pinout is optimized for placement directly adjacent
to Linear’s high speed 12-, 14- and 16-bit ADCs.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
TYPICAL APPLICATION
DESCRIPTION
2 GHz Low Noise Differential
16-Bit ADC Buffer
LTC6416 Driving LTC2208 ADC – 140MHz IF
FEATURES
APPLICATIONS
n 2GHz –3dB Small Signal Bandwidth
n 300MHz ±0.1dB Bandwidth
n 1.8nV/√Hz Output Noise
n 46.25dBm Equivalent OIP3 at 140MHz
n 40.25dBm Equivalent OIP3 Up to 300MHz
n –81dBc/–72dBc HD2/HD3 at 140MHz, 2VP-P Out
n –84.5dBc IM3 at 140MHz, 2VP-P Out Composite
n –74dBc/–67.5dBc HD2/HD3 at 300MHz, 2VP-P Out
n –72.5dBc IM3 at 300MHz, 2VP-P Out Composite
n Programmable High Speed, Fast Recovery
Output Clamping
n DC-Coupled Signal Path
n Operates on Single 2.7V to 3.9V Supply
n Low Power: 150mW on 3.6V
n 2mm
× 3mm 10-Pin DFN Package
n Differential ADC Driver
n IF Sampling Receivers
n Impedance Transformer
n SAW Filter Interface
n CCD Buffer
25Ω
200Ω
1pF
V+
GND
VCM
OUT–
6416 TA01a
OUT+
1.5pF
0.1μF
3.6V
2.2μF
25Ω
3.3V
1:8
MINI-CIRCUITS
TCM8-1+
50Ω
+
–
AIN+
AIN–
PGA = 1
LTC2208
IN+
CLHI
CLLO
IN–
LTC6416
680pF
CLOCK
(130MHz)
16
FREQUENCY (MHz)
0
AMPLITUDE
(dBFS)
60
6416 TA01b
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
10
30
20
40
50
0
V+ = 3.6V
HD2 = –94dBc
HD3 = –89.1dBc
SFDR = 89.1dB
SNR = 70.7dB
MEASURED USING DC1257B
WITH MINI-CIRCUIT TCM8-1+
1:8 TRANSFORMER
LTC6416 Driving LTC2208 ADC
with 1:8 Transformer fIN =140MHz,
fS = 130MHz, –1dBFS, PGA = 1
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