lm96570sqx National Semiconductor Corporation, lm96570sqx Datasheet

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lm96570sqx

Manufacturer Part Number
lm96570sqx
Description
Lm96570 Product Brief Ultrasound Configurable Transmit Beamformer
Manufacturer
National Semiconductor Corporation
Datasheet
© 2010 National Semiconductor Corporation
Ultrasound Configurable Transmit Beamformer
General Description
The LM96570 is an eight-channel monolithic beamformer for
pulse generators in multi-channel medical ultrasound appli-
cations. It is well-suited for use with National’s LM965XX
series chipset which offers a complete medical ultrasound
solution targeted towards low-power, portable systems.
The LM96570 offers eight P and N output channels with indi-
vidual delays of up to 102.4 µs operating at pulse rates of up
to 80 MHz. A pulse sequence is launched on all channels si-
multaneously through a single firing signal. Advanced fea-
tures include delay resolution down to 0.78 ns and pro-
grammable patterns of up to 64 pulses. Pulse patterns and
delay settings are pre-programmed through a serial interface,
thereby simplifying the timing requirements on the driving cir-
cuitry.
The LM96570 is packaged in a 32-pin LLP.
Notice: This document is not a full datasheet. For more
information regarding this product or to order samples
please contact your local National Semiconductor sales
office or visit http://www.national.com/support/dir.html
Applications
Typical Application
Ultrasound Imaging
301297
8-Channel Transmit/Receive Chipset
PRODUCT BRIEF
LM96570
Features
Key Specifications
I/O voltage
Core supply voltage
Output pulse rate
Reference frequency
1σ Output Jitter
(@ 5MHz)
Output Phase Noise
(@ 5MHz, 1kHz offset)
Delay resolution
Delay range
Max. pattern length
Serial interface speed
Total Power
Operating Temp.
Full control over selecting beam directions and pulse
patterns by programming individual channel parameters
Outputs interface seamlessly with positive and negative
inputs on octal high-voltage pulser ICs
Beamformer timing provides:
— Delay resolution of 0.78 ns
— Delay range of up to 102.4 μs
Pulse patterns are locally generated with:
— Sequences of up to 64 pulses
— Adjustable Pulse widths
2.5V to 3.3V CMOS logic interface
2.5 to 3.3
1.8
80
40 (±5%)
25
−116
0.78
102.4
64
80
0.063
0 to +70
PRELIMINARY
November 30, 2010
www.national.com
dBc/Hz
pulses
Watts
Mbps
MHz
MHz
30129703
°C
ps
ns
μs
V
V

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