lm96530sqx National Semiconductor Corporation, lm96530sqx Datasheet

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lm96530sqx

Manufacturer Part Number
lm96530sqx
Description
Lm96530 Ultrasound Transmit/receive Switch
Manufacturer
National Semiconductor Corporation
Datasheet
1.LM96530SQX.pdf (10 pages)
© 2011 National Semiconductor Corporation
Ultrasound Transmit/Receive Switch
General Description
The LM96530 is an eight-channel monolithic high-voltage,
high-speed T/R (Transmit/Receive) switch for multi-channel
medical ultrasound applications. 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 LM96530 contains eight high-voltage T/R switches with
integrated clamping diodes. This chip protects the inputs of
the receive channel's LNA (Low Noise Amplifier) from the
high-voltage pulses of the transmit channel. Advanced fea-
tures include a diode bridge with internal current sources that
are programmable via an external resistor. Low-power oper-
ation is enabled via per-channel-selectable switching.
National Semiconductor also offers a development package
for sale which includes a driver hardware and software pack-
age with a graphical user interface for configuration and mon-
itoring.
Applications
■
Ultrasound Imaging
301220
LM96530
Features
■
■
■
■
■
■
■
■
■
■
Key Specifications
Input voltage
Output voltage
clamp ( I
On-resistance
Off-isolation @
5MHz
Noise spectral
density @ 5MHz
Harmonic
distortion
HD2
HD3
Channel crosstalk
@ 5MHz
Operating Temp.
8-channel high-voltage receive side switches without
charge-injection
Can be used for receive protection and/or receive
multiplexing with SPI™ compatible bus control
Channel bandwidth supports 1MHz to 20MHz transducers
Input accepts pulses and continuous-wave signals within
±60V
Integrated output clamping diodes limit output to ±0.7V
Low harmonic distortion HD2 at -75dBc at 5MHz
Continuous-wave operation
Soft-switcher based on a diode bridge architecture
yielding better noise performance and faster turn-on and -
off times than competing T-gate switch architectures
2.5V to 3.3V CMOS SPI™ compatible logic interface with
daisy chain capability
Bias current source (I
via an external resistor
S
= 1mA)
S
) can be scaled between 0 and 8mA
0 to +70
±0.7
±60
-58
-75
-75
-73
0.5
18
PRELIMINARY
V
V
Ω
dB
nV/
dB
dB
dB
°C
January 11, 2011
√
Hz
www.national.com

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lm96530sqx Summary of contents

Page 1

... National Semiconductor also offers a development package for sale which includes a driver hardware and software pack- age with a graphical user interface for configuration and mon- itoring. Applications ■ Ultrasound Imaging © 2011 National Semiconductor Corporation LM96530 Features ■ 8-channel high-voltage receive side switches without charge-injection ■ ...

Page 2

Block Diagram Typical Application www.national.com   8-Channel Transmit/Receive Chipset 2 30122002 30122007 ...

Page 3

... Pin Diagram Ordering Information Part Number LM96530SQ LM96530SQE LM96530SQX FIGURE 1. Pin Diagram of LM96530 Package Type NSC Package Drawing 60 Lead LLP SQA60A 3 30122001 Supplied As 1000 250 2000 www.national.com ...

Page 4

TABLE 1. Pin Descriptions Pin No. Name 11, 13, INn 15 n=0,...,7 45, 43, 41, 39, 37, OUTn 35, 33, 31 n=0,... 25 RREF 59 SW_OFF 60 SPI_EN 58 SCSI 57 SCKI 56 SDI 53 ...

Page 5

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Junction Temperature (T JMAX Storage Temperature Range Supply Voltage (VDD) Supply Voltage (VSS) Supply Voltage (VSUB) IO Supply ...

Page 6

Functional Description The LM96530 RX switch provides an 8-channel receive side interface solution for medical ultrasound applications suitable for integration into multi-channel (128 / 256 channel) systems. A functional block diagram of the IC is shown in . Each RX ...

Page 7

DAISY CHAINING MULTIPLE LM96530 ICs For connecting multiple T/R switch ICs, the LM965XX SPI™- compatible bus can be daisy-chained ICs at 10MHz SCLKI for easy PCB routing. The inputs SDI, SCSI and SCLKI are daisy-chained together with ...

Page 8

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 60-Lead LLP Package NS Package Number SQA60A 8 ...

Page 9

Notes 9 www.national.com ...

Page 10

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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