Datasheet

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15 kV ESD Protected, 2.7 V to 3.6 V Serial

Port Transceivers with Green Idle™

Data Sheet

ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E

Rev. I Document Feedback

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FEATURES

Green Idle power-saving mode

Single 2.7 V to 3.6 V power supply

Operates with 3 V logic

0.1 µF to 1 µF charge pump capacitors

Low EMI

Low power shutdown: 20 nA

Full RS-232 compliance

460 kb/s data rate

One receiver active in shutdown

(ADM3307E/ADM3311E/ADM3312E/ADM3315E)

Two receivers active in shutdown (ADM3310E)

ESD >15 kV IEC 1000-4-2 on RS-232 I/Os

ESD >15 kV IEC 1000-4-2 on CMOS and RS-232 I/Os

(ADM3307E)

Qualified for automotive applications

APPLICATIONS

Mobile phone handsets/data cables

Laptop and notebook computers

Printers

Peripherals

Modems

PDAs/Hand-Held Devices/Palmtop Computers

FUNCTIONAL BLOCK DIAGRAMS

OUT

ADM3307E

V+

C1+

C1–

C2–

V–

C3+

GND

C3–

C2+

0.1µF

OUT

0.1µF

CERAMIC

10µF

TANTALUM

0.1µF

SHUTDOWN

INPUT

ENABLE

INPUT

CMOS

INPUTS

CMOS

OUTPUTS

VOLTAGE

TRIPLER/

INVERTER

+3V TO ±9V

0.1µF

EIA/TIA-232

OUTPUTS

EIA/TIA-232

INPUTS

INTERNAL 400kΩ PULL-UP RESISTOR ON EACH CMOS INPUT.

INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.

02915-001

Figure 1. ADM3307E Functional Block Diagram

OUT

ADM3310E/

ADM3311E

C1+

V+

C3–

C2–

C1–

C2+

V–

C3+

0.1µF

OUT

0.1µF

CERAMIC

10µF

ANTA

LUM

0.1µF

ENABLE

INP

SHUTDOWN

INPUT

CMOS

NPU

CMOS

OUTPUTS

VOLTAGE

TRIPLER/

INVE

RTER

+3V TO ±9V

0.1µF

EIA/TIA-232

OUTP

UTS

EIA/T

IA-232

INPUTS

OUT

INTERNAL 400kΩ

PULL-UP RESISTOR ON EACH CMOS INPUT.

INTERNAL 5kΩ PULL-DOWN RESIST

OR ON EACH RS-232 INPUT.

02915-002

OUT

ADM3312E/

ADM3315E

C1+

V+

C3–

C2–

C1–

GND

C2+

V–

C3+

0.1µF

OUT

0.1µF

CERAMIC

10µF

TANTALUM

0.1µF

ENABLE

INPUT

SHUTDOWN

INPUT

CMOS

INPUTS

VOLTAGE

TRIPLER/

INVERTER

+3V TO ±9V

0.1µF

CMOS

OUTPUTS

EIA/TIA-232

OUTPUTS

EIA/TIA-232

INPUTS

OUT

INTERNAL 400kΩ PULL-UP RESISTOR ON EACH CMOS INPUT.

INTERNAL 5kΩ (22kΩ FOR ADM3315E) PULL-DOWN RESISTOR ON

EACH RS-232 INPUT.

02915-003

Figure 2. ADM3310E/ADM3311E Functional Block Diagram Figure 3. ADM3312E/ADM3315E Functional Block Diagram

Protected by U.S. Patent No. 5,606,491.

Summary of content (24 pages)

PAGE 1
5 kV ESD Protected, 2.7 V to 3.6 V Serial Port Transceivers with Green Idle™ Data Sheet ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E1 FEATURES FUNCTIONAL BLOCK DIAGRAMS Green Idle power-saving mode Single 2.7 V to 3.6 V power supply Operates with 3 V logic 0.
PAGE 2
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Typical Performance Characteristics ........................................... 10 Applications ....................................................................................... 1 Circuit Description......................................................................... 13 Functional Block Diagrams ..................
PAGE 3
Data Sheet ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E GENERAL DESCRIPTION The ADM33xxE line of driver/receiver products is designed to fully meet the EIA-232 standard while operating with a single 2.7 V to 3.6 V power supply. The devices feature an on-board charge pump dc-to-dc converter, eliminating the need for dual power supplies. This dc-to-dc converter contains a voltage tripler and a voltage inverter that internally generates positive and negative supplies from the input 3 V power supply.
PAGE 4
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E Data Sheet SPECIFICATIONS VCC = 2.7 V to 3.6 V, C1 to C5 = 0.1 µF. All specifications TMIN to TMAX, unless otherwise noted. Table 1 Parameter Operating Voltage Range VCC Power Supply Current ADM3307E Min 2.
PAGE 5
Data Sheet Parameter Maximum Data Rate ADM3307E ADM3310E, ADM3311E, ADM3312E, ADM3315E Receiver Propagation Delay, TPHL, TPLH Receiver Output Enable Time, tER Receiver Output Disable Time, tDR Transmitter Propagation Delay, TPHL, TPLH Transition Region Slew Rate ESD PROTECTION (I/O PINS) 1 2 ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E Min Typ 250 460 250 720 920 460 3 0.3 0.17 100 300 500 18 ±15 ±15 ±8 Max 1 Measured at +3 V to −3 V or −3 V to +3 V. Includes CMOS I/O, SD, and EN for ADM3307E.
PAGE 6
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E Data Sheet ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted.
PAGE 7
Data Sheet ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E PRODUCT SELECTION GUIDE Table 3. Product Selection Guide ICC Shutdown Max 1 1 µA RS-232 0.85 mA 1 µA RS-232 RS-232 RS-232 1 mA 1 mA 0.85 mA 1 µA 1 µA 1 µA Rx Speed 15 kV ESD 3 1 1 Mbps RS-232 CMOS, EN, and SD 3 5 2 460 kbps 3 3 3 5 3 3 1 1 1 460 kbps 460 kbps 460 kbps Supply Voltage Tx ADM3307E 2.7 V to 3.6 V 5 ADM3310E 2.7 V to 3.6 V ADM3311E ADM3312E ADM3315E 2.7 V to 3.6 V 2.7 V to 3.6 V 2.7 V to 3.6 V 1 ICC Max 1.
PAGE 8
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E Data Sheet C3– 24 V– SD 6 ADM3307E TOP VIEW (Not to Scale) 23 GND T1IN 7 22 T1OUT 21 T2OUT 20 T3OUT T4IN 10 19 T4OUT T5IN 11 18 T5OUT R1OUT 12 17 R1IN R2OUT 13 16 R2IN R3OUT 14 15 R3IN 32 31 30 29 28 27 26 25 V+ 1 ADM3310E/ ADM3311E C1– SD NC T1OUT T2OUT T3OUT R1IN R2IN 27 GND VCC 3 26 C3– C2– 4 02915-006 R3OUT R4OUT R5OUT NC NC R5IN R4IN R3IN 25 V– C1+ 6 ADM3310E/ ADM3311E T1IN 7 TOP VIEW (Not to Scale) EN 5 9 10 11
PAGE 9
Data Sheet ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E Table 4. Pin Function Descriptions Mnemonic VCC V+ V− GND C1+, C1− C2+, C2− C3+, C3− TIN TOUT RIN ROUT EN SD NC Function Power Supply Input 2.7 V to 3.6 V. Internally Generated Positive Supply, 7.25 V (6.5 V Nominal for ADM3310E, ADM3315E). Capacitor C4 is connected between VCC and V+. Internally Generated Positive Supply, −7.25 V (−6.5 V Nominal for ADM3310E, ADM3315E). Capacitor C5 is connected between GND and V−. Ground Pin.
PAGE 10
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 9 TOUTHIGH 7 Tx O/P (V) 5 SD V+ 3 1 –1 –3 –5 02915-010 –7 0 Figure 10. Charge Pump V+ Exiting Shutdown 200 400 600 LOAD CAPACITANCE (pF) 800 1000 02915-013 TOUTLOW Figure 13. Transmitter Output vs. Load Capacitance (VCC = 3.3 V, Data Rate = 460 kbps) 40 35 SLEW RATE (V/µs) 30 SD 25 20 15 10 V– 0 0 500 1000 1500 LOAD CAPACITANCE (pF) 2000 2500 02915-014 02915-011 5 Figure 14.
PAGE 11
Data Sheet ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E 25 ICC (mA) 20 15 SD 10 5 0 200 400 600 800 LOAD CAPACITANCE (pF) 1200 1000 02915-019 0 02915-016 TX O/P LOW Figure 16. Supply Current vs. Load Capacitance (RL = Infinite) (VCC = 3.3 V, Data Rate = 460 kbps) Figure 19.
PAGE 12
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E Data Sheet 25 600 500 20 ICC (mA) 300 15 10 200 0 2.6 2.8 3.0 3.2 VCC (V) 3.4 3.6 Figure 22. ICC vs. VCC (Unloaded) 0 2.6 2.8 3.0 3.2 VCC (V) 3.4 Figure 23. ICC vs. VCC (RL = 3 kΩ) Rev. I | Page 12 of 24 3.
PAGE 13
Data Sheet ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E CIRCUIT DESCRIPTION During the oscillator high phase, S10 and S11 are open, while S8 and S9 are closed. C3 is charged to 3VCC from the output of the voltage tripler over several cycles. During the oscillator low phase, S8 and S9 are open, while S10 and S11 are closed. C3 is connected across C5, whose positive terminal is grounded and whose negative terminal is the V− output. Over several cycles, C5 charges to −3 VCC.
PAGE 14
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E A block diagram of the Green Idle circuit is shown in Figure 26. Both V+ and V− are monitored and compared to a reference voltage derived from an on-chip band gap device. If either V+ or V− fall below 7 V1, the oscillator starts up until the voltage rises above 7.25 V2.
PAGE 15
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E 3V Transmitter (Driver) Section EN INPUT The drivers convert 3.3 V logic input levels into EIA-232 output levels. With VCC = 3.0 V and driving an EIA-232 load, the output voltage swing is typically ±6.4 V (or ±5.5 V for ADM3310E and ADM3315E). Unused inputs may be left unconnected, because an internal 400 kV pull-up resistor pulls them high forcing the outputs into a low state.
PAGE 16
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E The transmitter outputs and receiver inputs have a similar protection structure. The receiver inputs can also dissipate some of the energy through the internal 5 kΩ (or 22 kΩ for the ADM3310E) resistor to GND as well as through the protection diodes. RECEIVER INPUT Rx D1 RIN 02915-030 D2 Figure 30. Receiver Input Protection Scheme TRANSMITTER OUTPUT Tx D1 02915-031 D2 Figure 31.
PAGE 17
Data Sheet R1 R2 DEVICE UNDER TEST C1 ESD TEST METHOD The ADM33xxE devices are tested using both of the previously mentioned test methods. All pins are tested with respect to all other pins as per the Human Body Model, ESD Assoc. Std. 55.1 specification. In addition, all I/O pins are tested as per the IEC 1000-4-2 test specification. The products were tested under the following conditions: R2 C1 HUMAN BODY MODEL ESD ASSOC. STD 55.1 1.
PAGE 18
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E Data Sheet OUTLINE DIMENSIONS 5.10 5.00 SQ 4.90 PIN 1 INDICATOR 0.30 0.25 0.18 32 25 0.50 BSC 17 0.80 0.75 0.70 8 16 9 BOTTOM VIEW FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SECTION OF THIS DATA SHEET. 0.05 MAX 0.02 NOM COPLANARITY 0.08 0.20 REF SEATING PLANE 0.25 MIN 112408-A TOP VIEW 3.25 3.10 SQ 2.95 EXPOSED PAD 0.50 0.40 0.
PAGE 19
Data Sheet ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E 7.90 7.80 7.70 24 13 4.50 4.40 4.30 6.40 BSC 1 12 PIN 1 0.65 BSC 0.15 0.05 0.30 0.19 1.20 MAX SEATING PLANE 0.20 0.09 0.75 0.60 0.45 8° 0° 0.10 COPLANARITY COMPLIANT TO JEDEC STANDARDS MO-153-AD Figure 39. 24-Lead Thin Shrink Small Outline Package [TSSOP] (RU-24) Dimensions shown in millimeters 9.80 9.70 9.60 28 15 4.50 4.40 4.30 6.40 BSC 1 14 PIN 1 0.65 BSC 0.15 0.05 COPLANARITY 0.10 0.30 0.19 1.20 MAX SEATING PLANE 0.20 0.
PAGE 20
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E Data Sheet ORDERING GUIDE Model 1, 2 ADM3307EARU ADM3307EARU-REEL7 ADM3307EARUZ ADM3307EARUZ-REEL ADM3307EARUZ-REEL7 ADM3307EACPZ ADM3307EACPZ-REEL ADM3307EACPZ-REEL7 ADM3307EWARUZ-RL7 ADM3310EARU ADM3310EARUZ ADM3310EARUZ-REEL ADM3310EARUZ-REEL7 ADM3310EACPZ ADM3310EACPZ-REEL ADM3310EACPZ-REEL7 ADM3311EARS ADM3311EARS-REEL ADM3311EARS-REEL7 ADM3311EARSZ ADM3311EARSZ-REEL ADM3311EARSZ-REEL7 ADM3311EARU ADM3311EARU-REEL ADM3311EARU-REEL7 ADM3311EARUZ ADM3311EARU
PAGE 21
Data Sheet ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E AUTOMOTIVE PRODUCTS The ADM3307EW model is available with controlled manufacturing to support the quality and reliability requirements of automotive applications. Note that this automotive model may have specifications that differ from the commercial models; therefore, designers should review the Specifications section of this data sheet carefully. Only the automotive grade products shown are available for use in automotive applications.
PAGE 22
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E NOTES Rev.
PAGE 23
Data Sheet ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E NOTES Rev.
PAGE 24
ADM3307E/ADM3310E/ADM3311E/ADM3312E/ADM3315E NOTES ©2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02915-0-3/13(I) Rev.